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20.com

20.com is SSL secured

Free website and domain report on 20.com

Last Updated: 18th April, 2021 Update Now
Overview

Snoop Summary for 20.com

This is a free and comprehensive report about 20.com. 20.com is hosted in United States on a server with an IP address of 47.246.43.172, where USD is the local currency and the local language is English. 20.com has the potential to be earning an estimated $1 USD per day from advertising revenue. If 20.com was to be sold it would possibly be worth $881 USD (based on the daily revenue potential of the website over a 24 month period). 20.com receives an estimated 419 unique visitors every day - a decent amount of traffic! This report was last updated 18th April, 2021.

About 20.com

Site Preview: 20.com 20.com
Title: 20
Description:
Keywords and Tags: portal sites
Related Terms:
Fav Icon:
Age: Over 29 years old
Domain Created: 24th November, 1995
Domain Updated: 11th March, 2021
Domain Expires: 23rd November, 2024
Review

Snoop Score

1/5

Valuation

$881 USD
Note: All valuation figures are estimates.

Popularity

Low
Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank: 2,548,925
Alexa Reach:
SEMrush Rank (US):
SEMrush Authority Score:
Moz Domain Authority: 0
Moz Page Authority: 0

Organic vs Paid (Google Ads)

Traffic

Visitors

Daily Visitors: 419
Monthly Visitors: 12,743
Yearly Visitors: 152,814
Note: All visitors figures are estimates.

Visitors By Country

Revenue

Revenue

Daily Revenue: $1 USD
Monthly Revenue: $36 USD
Yearly Revenue: $436 USD
Note: All revenue figures are estimates.

Revenue By Country

SEO

Backlinks Analysis (SEMrush)

Top New Follow Links

Top Ranking Keywords (US)

Domain Analysis

Value Length
Domain: 20.com 6
Domain Name: 20 2
Extension (TLD): com 3
Expiry Check:

Page Speed Analysis

Average Load Time:
Load Time Comparison:

PageSpeed Insights

Avg. (All Categories) 69
Performance 83
Accessibility 68
Best Practices 67
SEO 91
Progressive Web App 36
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.20.com
Updated: 18th April, 2021

2.49 seconds
First Contentful Paint (FCP)
10%
76%
14%

0.01 seconds
First Input Delay (FID)
99%
0%
1%

Simulate loading on desktop
83

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for 20.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

First Contentful Paint — 0.7 s
The time taken for the first image or text on the page to be rendered.
Largest Contentful Paint — 0.8 s
The timing of the largest text or image that is painted.
Time to Interactive — 2.4 s
The time taken for the page to become fully interactive.
Total Blocking Time — 80 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Cumulative Layout Shift — 0.017
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

First CPU Idle — 2.3 s
The time taken for the page's main thread to be quiet enough to handle input.
Max Potential First Input Delay — 100 ms
Users could experience a delay when interacting with the page.
First Meaningful Paint — 0.7 s
The time taken for the primary content of the page to be rendered.
Estimated Input Latency — 10 ms
The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive 20.com as laggy when the latency is higher than 0.05 seconds.
Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://20.com/
http/1.1
0
473.35499990731
310
0
301
text/html
https://20.com/
http/1.1
473.91099995002
2065.6779999845
564
0
301
text/html
https://www.20.com/
h2
2066.1989999935
5837.7439999022
18391
105561
200
text/html
Document
https://www.20.com/vendor/layui/css/layui.css?v=20210416081031311
h2
5853.7929998711
6380.9050000273
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200
text/css
Stylesheet
https://www.20.com/vendor/font-awesome/css/font-awesome.min.css
h2
5853.9630002342
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31000
200
text/css
Stylesheet
https://www.20.com/css/alert_dialog_scss.min.css?v=20210416081031311
h2
5854.100999888
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1665
3132
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text/css
Stylesheet
https://www.20.com/css/shop_scss.min.css?v=20210416081031311
h2
5854.3870002031
6605.7970002294
24890
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text/css
Stylesheet
https://www.20.com/css/common.min.css?v=20210416081031311
h2
5854.6899999492
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text/css
Stylesheet
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h2
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text/css
Stylesheet
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h2
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image/png
Image
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h2
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Image
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h2
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200
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Image
https://www.20.com/img/close-white.png
h2
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200
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Image
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h2
5861.719999928
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Script
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h2
5862.0600001886
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200
image/png
Image
https://www.20.com/img/realname.png
h2
5862.277999986
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200
image/png
Image
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http/1.1
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Script
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h2
5862.8119998612
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Script
https://www.20.com/vendor/jquery.cookie/jquery.cookie.min.js?v=20210416081031311
h2
5863.078000024
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1317
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application/javascript
Script
https://www.20.com/vendor/layui/layui.all.js?v=20210416081031311
h2
5863.3610000834
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200
application/javascript
Script
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h2
5863.599000033
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1665
1846
200
application/javascript
Script
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h2
5863.7100001797
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200
application/javascript
Script
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h2
5863.8369999826
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11801
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200
application/javascript
Script
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h2
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application/javascript
Script
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h2
5864.312000107
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3640
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200
application/javascript
Script
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h2
5864.5100002177
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2122
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200
application/javascript
Script
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h2
5864.7730001248
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200
application/javascript
Script
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h2
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200
application/javascript
Script
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h2
5865.2639999054
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200
application/javascript
Script
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h2
5866.4660002105
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2602
4745
200
application/javascript
Script
data
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200
image/png
Image
https://www.20.com/img/index_image/index_icons.png
h2
6617.7380001172
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200
image/png
Image
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h2
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image/jpeg
Image
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h2
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Image
https://www.20.com/img/shop/book_recomment_item_icon.png
h2
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image/png
Image
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h2
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image/png
Image
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h2
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image/png
Image
https://www.20.com/img/shop/trust_icon.png
h2
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image/png
Image
https://www.20.com/img/shop/domain/auction_icon1.png
h2
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image/png
Image
https://www.20.com/img/shop/domain/auction_icon2.png
h2
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Image
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h2
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image/png
Image
https://www.20.com/img/index_image/20-qrcode.jpg
h2
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image/jpeg
Image
https://www.20.com/img/ios-btn.png
h2
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image/png
Image
https://www.20.com/img/android-btn.png
h2
6630.0670001656
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2600
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image/png
Image
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/pk1.js
http/1.1
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Script
https://bqq.gtimg.com/da_market/i.js
http/1.1
8090.1430002414
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15469
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application/x-javascript
Script
https://t.gdt.qq.com/conv/web/cookies/jsonp?cb=jsonp_cb_0_1618718753037_407&callback=jsonp_cb_0_1618718753037_407
http/1.1
8111.522000283
10312.119000126
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Script
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http/1.1
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Script
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http/1.1
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Image
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http/1.1
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Image
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http/1.1
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Image
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Stylesheet
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Stylesheet
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h2
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Stylesheet
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Script
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h2
8981.8080002442
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Image
https://www.20.com/img/toBottom-icon.png
h2
8982.1999999695
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200
image/png
Image
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http/1.1
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Document
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http/1.1
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Document
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application/javascript
Script
https://pingtas.qq.com/webview/pingd?dm=webpage.qidian.qq.com&pvi=34871618718756132&si=s856931618718756132&url=/2/chat-customer/pc/index.html&arg=&ty=1&rdm=www.20.com&rurl=/&rarg=&adt=&r2=500699039&scr=800x600&scl=24-bit&lg=en-us&tz=7&ext=version=2.0.19&random=1618718756133
http/1.1
11210.545000155
12797.842000145
239
0
200
text/html
Image
https://pingjs.qq.com/tcss.ping.https.js
http/1.1
11406.795000192
15212.856000289
4305
10245
200
application/javascript
Script
https://pingfore.qq.com/pingd?dm=webpage.qidian.qq.com&url=/2/chat-customer/pc/index.html&rdm=www.20.com&rurl=/&rarg=-&pvid=1766572269&scr=800x600&scl=24-bit&lang=en-us&java=0&pf=Linux%20x86_64&tz=7&flash=-&ct=-&vs=tcss.3.1.5&ext=nw%3D1%3Btm%3D4%3Bch%3D2&hurlcn=&rand=26493&reserved1=-1&tt=
http/1.1
15221.880000085
17065.111000091
113
0
200
text/plain
Image
https://fereport.qidian.qq.com/report/webim?type=1&subType=1&requestConsumTime=8057&addon=%7B%22domLoad%22%3A2394%7D&visitorid=317618718753013&kfuin=2355054610&tid=1000001&count=1&1618718762046
http/1.1
17120.75200025
18087.354000192
302
0
200
image/png
Image
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
5870.319
8.375
5882.912
6.141
5889.064
6.132
6640.31
182.722
8077.805
65.284
8143.115
13.279
8870.988
20.587
8929.989
104.687
9039.929
8.452
9929.08
6.257
9937.578
5.701
10122.518
13.362
10713.352
37.819
11139.623
100.853
11244.063
26.397
11271.73
7.746
11366.888
71.578
12384.059
8.473
15244.22
7.451
17096.881
7.373
17112.308
35.009
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data

Opportunities

Eliminate render-blocking resources
Resources, such as JavaScript and style sheets, can block the first paint of the page. 20.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
Properly size images — Potential savings of 11 KiB
Images can slow down the page's load time. 20.com should consider serving more appropriate-sized images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.20.com/img/agent_index/logo_20.png?v=20210416081031311
14765
11054
Defer offscreen images — Potential savings of 68 KiB
Time to Interactive can be slowed down by resources on the page. 20.com should consider lazy-loading offscreen and hidden images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.20.com/img/index_image/20-qrcode.jpg
39007
39007
https://www.20.com/img/public_img/waba.png?v=20210416081031311
19256
19256
https://www.20.com/img/ios-btn.png
4888
4888
https://www.20.com/img/realname.png
4524
4524
https://static.anquan.org/static/outer/image/hy_124x47.png?id=www.20.com?t=41
2390
2390
Minify CSS — Potential savings of 5 KiB
Cascading Style Sheets (CSS) files can contribute to network payload sizes. 20.com should consider minifying CSS files.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.20.com/vendor/layui/css/layui.css?v=20210416081031311
21246
4840
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. 20.com should consider minifying JS files.
Remove unused CSS — Potential savings of 85 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. 20.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/pc/css/chat-8c42c30d6.css
29316
29316
https://www.20.com/vendor/layui/css/layui.css?v=20210416081031311
21246
20630
.feedback-wrap-box .feedback-wrap{padding:0 16px;background:#FFFFFF;border:1px solid #E1E6F0; ... } ...
19901
19901
https://www.20.com/css/shop_scss.min.css?v=20210416081031311
24890
17626
Efficiently encode images — Potential savings of 9 KiB
Unoptimized images can consume more cellular data than what is necessary.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.20.com/img/index_image/20-qrcode.jpg
39007
9115
Serve images in next-gen formats — Potential savings of 115 KiB
Image formats like PNG and JPEG have poor compression when compared to other next-gen formats, such as JPEG 200, JPEG XR and WebP.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.20.com/img/index_image/20-qrcode.jpg
39007
31513
https://www.20.com/img/shop/shop_head_bg.png
28535
27801
https://www.20.com/img/shop/shop_index_bg.jpg
36533
25617
https://www.20.com/img/public_img/waba.png?v=20210416081031311
19256
18594
https://www.20.com/img/index_image/index_icons.png
23299
14559
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. 20.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers — Potential savings of 31 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/trtc.js
13421
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/pc/js/chat-ea5e94e6e.js
12713
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/pk1.js
5589
https://mat1.gtimg.com/www/js/emonitor/index_20200103.js
65
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
URL Potential Savings (Ms)
https://www.20.com/img/shop/shop_index_bg.jpg
0

Diagnostics

Avoids enormous network payloads — Total size was 1,077 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/pc/js/chat-ea5e94e6e.js
216252
https://www.20.com/vendor/layui/layui.all.js?v=20210416081031311
114323
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/trtc.js
92595
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/pk1.js
57934
https://www.20.com/vendor/jquery/dist/jquery.min.js?v=20210416081031311
42042
https://www.20.com/img/index_image/20-qrcode.jpg
39608
https://www.20.com/img/shop/shop_index_bg.jpg
37138
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/jquery-1.12.4.min.js
34402
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/jquery-1.12.4.min.js
34402
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/pc/css/chat-8c42c30d6.css
29316
Avoid chaining critical requests — 22 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. 20.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
JavaScript execution time — 0.3 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.20.com/
268.56
4.166
1.159
Unattributable
118.312
26.034
0.3
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/pk1.js
80.136
70.165
5.06
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/trtc.js
74.161
67.268
6.166
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/pc/js/chat-ea5e94e6e.js
73.626
56.063
10.827
https://webpage.qidian.qq.com/2/chat-customer/pc/index.html
62.635
15.974
1.708
Minimizes main-thread work — 1.0 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
412.798
Style & Layout
203.826
Other
130.641
Script Parsing & Compilation
57.172
Rendering
56.151
Garbage Collection
47.075
Parse HTML & CSS
44.385
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 76 requests • 1,077 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
76
1103293
Script
31
767492
Image
30
213759
Stylesheet
10
98804
Document
3
22364
Other
2
874
Media
0
0
Font
0
0
Third-party
30
610530
Minimize third-party usage — Third-party code blocked the main thread for 20 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
502342
16.808
SHOW DETAILS
15528
0
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
预订推荐 : 近期有811127个域名即将被删除 txb.com au.cc eg.cc 7567.vip 6667.net 1133.cc 2755.net…
Avoid large layout shifts — 1 element found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
iframe
0.017080378250591
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoid long main-thread tasks — 5 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/socket.io.js
2165
101
https://www.20.com/
616
91
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/pc/js/chat-ea5e94e6e.js
2510
72
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/pk1.js
1150
65
https://static.anquan.org/static/outer/js/aq_auth.js
1215
52
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Opportunities

Remove unused JavaScript — Potential savings of 311 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/pc/js/chat-ea5e94e6e.js
216252
109510
https://www.20.com/vendor/layui/layui.all.js?v=20210416081031311
114323
90854
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/trtc.js
92595
72478
https://www.20.com/vendor/jquery/dist/jquery.min.js?v=20210416081031311
42042
24107
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/jquery-1.12.4.min.js
34402
21914
Avoid multiple page redirects — Potential savings of 340 ms
Redirects can cause additional delays before the page can begin loading. 20.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://20.com/
190
https://20.com/
150
https://www.20.com/
0

Diagnostics

Avoid an excessive DOM size — 1,122 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
1122
Maximum DOM Depth
2259.com
15
Maximum Child Elements
body
29

Metrics

Speed Index — 4.6 s
The time taken for the page contents to be visibly populated.

Opportunities

Reduce initial server response time — Root document took 3,770 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.20.com/
3772.542

Diagnostics

Serve static assets with an efficient cache policy — 66 resources found
20.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://www.20.com/vendor/layui/layui.all.js?v=20210416081031311
0
114323
https://www.20.com/vendor/jquery/dist/jquery.min.js?v=20210416081031311
0
42042
https://www.20.com/img/index_image/20-qrcode.jpg
0
39608
https://www.20.com/img/shop/shop_index_bg.jpg
0
37138
https://www.20.com/img/shop/shop_head_bg.png
0
29093
https://www.20.com/css/shop_scss.min.css?v=20210416081031311
0
24890
https://www.20.com/img/index_image/index_icons.png
0
23861
https://www.20.com/vendor/layui/css/layui.css?v=20210416081031311
0
21246
https://www.20.com/img/public_img/waba.png?v=20210416081031311
0
19818
https://www.20.com/img/agent_index/logo_20.png?v=20210416081031311
0
15327
https://www.20.com/js/agent/agent.min.js?v=20210416081031311
0
11801
https://www.20.com/vendor/font-awesome/css/font-awesome.min.css
0
8238
https://www.20.com/img/shop/domain/hot_auction_head_bg.png
0
7045
https://www.20.com/js/alert_dialog.min.js?v=20210416081031311
0
5751
https://www.20.com/js/module/header.min.js?v=20210416081031311
0
5533
https://www.20.com/img/ios-btn.png
0
5487
https://www.20.com/img/realname.png
0
5126
https://www.20.com/vendor/layui/css/modules/layer/default/layer.css?v=3.1.1
0
4832
https://www.20.com/js/components/common.min.js?v=20210416081031311
0
4305
https://www.20.com/img/shop/book_recomment_item_bg1.png
0
4105
https://www.20.com/vendor/arttemplate/template.js?v=20210416081031311
0
3640
https://www.20.com/js/plugin/login_dialog.min.js?v=20210416081031311
0
3591
https://www.20.com/css/common.min.css?v=20210416081031311
0
3259
https://www.20.com/js/module/footer.min.js?v=20210416081031311
0
2602
https://www.20.com/img/android-btn.png
0
2600
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
0
2512
https://www.20.com/js/registration/listDownload.min.js?v=20210416081031311
0
2140
https://www.20.com/js/index/index_index.min.js?v=20210416081031311
0
2122
https://www.20.com/img/qq-icon.png
0
1722
https://www.20.com/css/alert_dialog_scss.min.css?v=20210416081031311
0
1665
https://www.20.com/vendor/export-excel/excel.js?v=20210416081031311
0
1665
https://www.20.com/img/shop/trust_icon.png
0
1653
https://www.20.com/img/shop/book_recomment_item_icon.png
0
1530
https://www.20.com/img/toBottom-icon.png
0
1401
https://www.20.com/vendor/jquery.cookie/jquery.cookie.min.js?v=20210416081031311
0
1317
https://www.20.com/img/close-white.png
0
1290
https://www.20.com/css/login_dialog.min.css?v=20210416081031311
0
1268
https://www.20.com/vendor/layui/css/modules/code.css
0
1117
https://www.20.com/img/0630/i-1.png
0
1027
https://www.20.com/img/shop/domain/auction_icon2.png
0
1002
https://www.20.com/img/shop/domain/auction_icon3.png
0
994
https://www.20.com/img/shop/domain/auction_icon1.png
0
839
https://admin.qidian.qq.com/qbf/aBTest/getGrayLevel?kfuin=2355054610&callback=JSONP_CB_1_1618718753039_452&cb=JSONP_CB_1_1618718753039_452
0
530
https://fereport.qidian.qq.com/report/webim?type=1&subType=1&requestConsumTime=8057&addon=%7B%22domLoad%22%3A2394%7D&visitorid=317618718753013&kfuin=2355054610&tid=1000001&count=1&1618718762046
0
302
https://v.qidian.qq.com/events/report?kfuin=2355054610&type=wpa&qid=317618718753013&time=1618718753787&properties=%7B%22%24sdk_version%22%3A%221.2.0%22%2C%22%24page_id%22%3A%222th5zk.spn4e0.knmncnhy%22%2C%22%24sdk_type%22%3A%22jssdk%22%2C%22%24title%22%3A%2220%E6%95%B0%E5%AD%97%E5%9F%9F%E5%90%8D%E5%95%86%E6%A0%87%E8%B5%84%E4%BA%A7%7C%E9%AB%98%E6%9D%83%E9%87%8D%E5%88%B0%E6%9C%9F%E6%B3%A8%E5%86%8C%E5%9F%9F%E5%90%8D%E6%8A%A2%E6%B3%A8_%E6%8F%90%E4%BE%9B%E5%9F%9F%E5%90%8D%E7%BB%8F%E7%BA%AA_%E8%80%81%E5%9F%9F%E5%90%8D_%E5%9F%9F%E5%90%8D%E4%B8%AD%E4%BB%8B_%E5%9F%9F%E5%90%8D%E4%B9%B0%E5%8D%96%E5%AF%84%E5%94%AE_%E5%9F%9F%E5%90%8D%E4%B8%80%E8%B5%B7%E8%B5%9A!%22%2C%22%24referrer%22%3A%22%22%2C%22%24url%22%3A%22https%3A%2F%2Fwww.20.com%2F%22%2C%22%24is_first_day%22%3Atrue%2C%22wpa_visitorid%22%3A317618718753013%2C%22wpa_cckey%22%3A%22%22%2C%22%24tz%22%3A7%2C%22%24level%22%3A%22%22%2C%22%24sw%22%3A800%2C%22%24sh%22%3A600%2C%22%24bw%22%3A1350%2C%22%24bh%22%3A940%7D&event=%24pageview&z=dbanb2
0
181
https://v.qidian.qq.com/events/report?kfuin=2355054610&type=wpa&qid=317618718753013&time=1618718754039&properties=%7B%22%24sdk_version%22%3A%221.2.0%22%2C%22%24page_id%22%3A%222th5zk.spn4e0.knmncnhy%22%2C%22%24sdk_type%22%3A%22jssdk%22%2C%22%24title%22%3A%2220%E6%95%B0%E5%AD%97%E5%9F%9F%E5%90%8D%E5%95%86%E6%A0%87%E8%B5%84%E4%BA%A7%7C%E9%AB%98%E6%9D%83%E9%87%8D%E5%88%B0%E6%9C%9F%E6%B3%A8%E5%86%8C%E5%9F%9F%E5%90%8D%E6%8A%A2%E6%B3%A8_%E6%8F%90%E4%BE%9B%E5%9F%9F%E5%90%8D%E7%BB%8F%E7%BA%AA_%E8%80%81%E5%9F%9F%E5%90%8D_%E5%9F%9F%E5%90%8D%E4%B8%AD%E4%BB%8B_%E5%9F%9F%E5%90%8D%E4%B9%B0%E5%8D%96%E5%AF%84%E5%94%AE_%E5%9F%9F%E5%90%8D%E4%B8%80%E8%B5%B7%E8%B5%9A!%22%2C%22%24referrer%22%3A%22%22%2C%22%24url%22%3A%22https%3A%2F%2Fwww.20.com%2F%22%2C%22%24is_first_day%22%3Atrue%2C%22wpa_visitorid%22%3A317618718753013%2C%22wpa_cckey%22%3A%22%22%2C%22wpaid%22%3A785%2C%22wpa_category_id%22%3A1%2C%22wpa_category%22%3A%22QQ%E6%8E%A5%E5%BE%85%22%2C%22wpa_type%22%3A3%2C%22kfext%22%3A2355054610%2C%22wpa_eventtp%22%3A1%2C%22wpa_tptype%22%3A1%2C%22wpa_tptype_name%22%3A%22%E4%BC%81%E4%B8%9AWPA%22%7D&event=im_wpa_view&z=6as93d
0
181
https://pingfore.qq.com/pingd?dm=webpage.qidian.qq.com&url=/2/chat-customer/pc/index.html&rdm=www.20.com&rurl=/&rarg=-&pvid=1766572269&scr=800x600&scl=24-bit&lang=en-us&java=0&pf=Linux%20x86_64&tz=7&flash=-&ct=-&vs=tcss.3.1.5&ext=nw%3D1%3Btm%3D4%3Bch%3D2&hurlcn=&rand=26493&reserved1=-1&tt=
0
113
https://www.20.com/vendor/layui/css/modules/laydate/default/laydate.css?v=5.0.9
300000
2973
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/pc/js/chat-ea5e94e6e.js
600000
216252
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/trtc.js
600000
92595
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/pk1.js
600000
57934
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/jquery-1.12.4.min.js
600000
34402
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/jquery-1.12.4.min.js
600000
34402
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/pc/css/chat-8c42c30d6.css
600000
29316
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/emoji.js
600000
27271
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/socket.io.js
600000
21703
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/socket.io.js
600000
21682
https://bqq.gtimg.com/da_market/i.js
600000
15469
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/status/js/report-20afc6dcc.js
600000
9742
https://pingjs.qq.com/tcss.ping.https.js
600000
4305
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/i18n.js
600000
1971
https://static.anquan.org/static/outer/image/hy_124x47.png?id=www.20.com?t=41
86400000
2727
https://static.anquan.org/static/outer/js/aq_auth.js
86400000
1890
https://mat1.gtimg.com/www/js/emonitor/index_20200103.js
604800000
8101
https://bqq.gtimg.com/qidian/src/sites/srv/wpa/conf/wpa/avatar/2-4.png
2592000000
4841
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/images/1_4.png
2592000000
1698
Avoid `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Source
SHOW DETAILS
SHOW DETAILS
Image elements do not have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
URL Failing Elements
https://www.20.com/img/agent_index/logo_20.png?v=20210416081031311
img
https://www.20.com/img/realname.png
img
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
img
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
img
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
img
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
img
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
img
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
img
https://www.20.com/img/0630/i-1.png
img
68

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of 20.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
`<object>` elements have `[alt]` text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
20.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Navigation

The page does not contain a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
Failing Elements
html

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
域名搜索
whois查询
被墙查询
污染查询
拦截检测
查询
首页
域名抢注
竞拍大厅
淘域名
域名查询
域名经纪
管理中心
近期删除
纯数字
高收录
高PR
百度高反链
高Sg反链
高年龄
高权重
26（稀少）
更多>>
132566.00
当前价格
剩余时间
105029.00
当前价格
剩余时间
98005.00
当前价格
剩余时间
64387.00
当前价格
剩余时间
49867.00
当前价格
剩余时间
40877.00
当前价格
剩余时间
34177.00
当前价格
剩余时间
32300.00
当前价格
剩余时间
32090.00
当前价格
剩余时间
23890.00
当前价格
剩余时间
21138.00
当前价格
剩余时间
21090.00
当前价格
剩余时间
3328.com
精品四数字域名，联系Q63888
800000元
当前价格
剩余时间
1200.com
精品四数字域名，联系Q63888
1180000元
当前价格
剩余时间
v.cc
极品单字母域名，联系Q63888
1780000元
当前价格
剩余时间
2726.com
精品四数字域名，联系Q63888
450000元
当前价格
剩余时间
q3.com
精品二杂字域名，联系Q63888
1080000元
当前价格
剩余时间
506.tv
TV优质域名
6380元
当前价格
剩余时间
55m.com
米表67888.com
176000元
当前价格
剩余时间
2259.com
精品四数字域名，联系Q63888
650000元
当前价格
剩余时间
6007.com
精品四数字域名，联系Q63888
850000元
当前价格
剩余时间
8930.com
174777元
当前价格
剩余时间
域名
一口价
卖家
操作
￥650000
ID:9800
￥450000
ID:9800
￥1180000
ID:9800
￥1780000
ID:9800
￥850000
ID:9800
￥800000
ID:9800
域名
简介
参考售价
代理价
操作
￥480000
￥****
￥450000
￥****
￥350000
￥****
￥600000
￥****
￥650000
￥****
￥360000
￥****
￥650000
￥****
￥450000
￥****
p**.com
3***.com
1**.com
3****.com
2****.com
1****.com
5****.com
2****.com
9**.cc
k*.vip
5**.tv
1****.com
7****.com
1****.com
6*.cc
u**.com
7**.tv
g***.com
5**.tv
6**.tv
更多>>
2021-04-16
2021-03-30
2021-03-02
2021-02-22
2021-01-27
2021-01-26
更多>>
2021-04-18
2021-04-18
2021-04-18
2021-04-18
2021-04-17
2021-04-17
厦门巨虎网络科技有限公司旗下网站：20.com     法律顾问：福建道衍律师事务所
闽ICP备16020253号－6      闽公网安备 35020302032683号      增值电信业务经营许可证：闽B2-20170219
闽ICP备16020253号－6
闽公网安备 35020302032683号

Names and labels

`<frame>` or `<iframe>` elements do not have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Failing Elements
iframe
iframe
iframe
Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Failing Elements
img
img
img
img
img
img
img
Links do not have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.

Best practices

`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.
Failing Elements
meta

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
67

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that 20.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Avoids Application Cache
Application cache is deprecated and is no longer recommended.
Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
1.12.4
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://20.com/
Allowed
Links to cross-origin destinations are unsafe
Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.
Includes front-end JavaScript libraries with known security vulnerabilities — 4 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
SHOW DETAILS
4
Medium

Audits

Registers an `unload` listener
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
Source
SHOW DETAILS
SHOW DETAILS
SHOW DETAILS
Browser errors were logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Source Description
SHOW DETAILS
[21:05:56] <ERROR> Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4420.0 Safari/537.36 Chrome-Lighthouse isWebRTCSupported: true isMediaSupported: true isH264Supported: false
SHOW DETAILS
WebSocket connection to 'wss://chat.qidian.qq.com/status/?queryId=839018718755640&EIO=3&transport=websocket' failed: Error in connection establishment: net::ERR_NAME_NOT_RESOLVED
SHOW DETAILS
WebSocket connection to 'wss://chat.qidian.qq.com/status/?queryId=839018718755640&EIO=3&transport=websocket' failed: Error in connection establishment: net::ERR_NAME_NOT_RESOLVED
SHOW DETAILS
WebSocket connection to 'wss://chat.qidian.qq.com/status/?queryId=839018718755640&EIO=3&transport=websocket' failed: Error in connection establishment: net::ERR_NAME_NOT_RESOLVED
91

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for 20.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of 20.com on mobile screens.
Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Failing Elements
img
img
img
img
img
img
img

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
36

Progressive Web App

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of 20.com. This includes details about web app manifests.

PWA Optimized

Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of 20.com on mobile screens.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories) 60
Performance 56
Accessibility 68
Best Practices 60
SEO 83
Progressive Web App 33
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.20.com
Updated: 18th April, 2021

5.20 seconds
First Contentful Paint (FCP)
6%
44%
50%

0.24 seconds
First Input Delay (FID)
68%
21%
11%

Simulate loading on mobile
56

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for 20.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Cumulative Layout Shift — 0.004
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Opportunities

Properly size images
Images can slow down the page's load time. 20.com should consider serving more appropriate-sized images.
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. 20.com should consider lazy-loading offscreen and hidden images.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. 20.com should consider minifying JS files.
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. 20.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers — Potential savings of 17 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/h5/js/chat-440c4571a.js
11543
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/pk1.js
5595
https://mat1.gtimg.com/www/js/emonitor/index_20200103.js
65
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
URL Potential Savings (Ms)
https://www.20.com/img/shop/shop_index_bg.jpg
0

Diagnostics

Avoids enormous network payloads — Total size was 1,091 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/h5/js/chat-440c4571a.js
214522
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/beta-amr.js
132973
https://www.20.com/vendor/layui/layui.all.js?v=20210416081031311
113737
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/pk1.js
58001
https://www.20.com/vendor/jquery/dist/jquery.min.js?v=20210416081031311
42042
https://www.20.com/img/index_image/20-qrcode.jpg
39598
https://www.20.com/img/shop/shop_index_bg.jpg
37128
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/h5/css/chat-511fdbdba.css
37004
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/jquery-1.12.4.min.js
34425
https://www.20.com/img/shop/shop_head_bg.png
29083
Avoid chaining critical requests — 22 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. 20.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 78 requests • 1,091 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
78
1116944
Script
33
764116
Image
30
213564
Stylesheet
10
105881
Document
3
32504
Other
2
879
Media
0
0
Font
0
0
Third-party
32
625979
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
预订推荐 : 近期有811127个域名即将被删除 txb.com au.cc eg.cc 7567.vip 6667.net 1133.cc 2755.net…
Avoid large layout shifts — 1 element found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
iframe
0.0036082188288371
Avoid long main-thread tasks — 7 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/beta-amr.js
10689
714
https://www.20.com/
2061
314
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/pk1.js
4200
219
https://static.anquan.org/static/outer/js/aq_auth.js
7590
189
https://bqq.gtimg.com/da_market/i.js
5040
72
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/jquery-1.12.4.min.js
5910
61
https://hm.baidu.com/hm.js?66792ba421677552033a7bb7db52223d
8859
52
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Other

Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://20.com/
http/1.1
0
382.86499999231
313
0
301
text/html
https://20.com/
http/1.1
383.38000001386
1386.4380000159
566
0
301
text/html
https://www.20.com/
h2
1386.9299999787
2298.4960000031
18674
105577
200
text/html
Document
https://www.20.com/vendor/layui/css/layui.css?v=20210416081031311
h2
2313.702000014
2411.9059999939
20893
95397
200
text/css
Stylesheet
https://www.20.com/vendor/font-awesome/css/font-awesome.min.css
h2
2313.817999966
2406.8029999617
8225
31000
200
text/css
Stylesheet
https://www.20.com/css/alert_dialog_scss.min.css?v=20210416081031311
h2
2314.0019999701
2409.673999995
1655
3132
200
text/css
Stylesheet
https://www.20.com/css/shop_scss.min.css?v=20210416081031311
h2
2314.1729999916
2413.1540000089
24879
96836
200
text/css
Stylesheet
https://www.20.com/css/common.min.css?v=20210416081031311
h2
2314.383000019
2408.9490000042
3073
7150
200
text/css
Stylesheet
https://www.20.com/css/login_dialog.min.css?v=20210416081031311
h2
2314.5289999666
2405.6359999813
1258
1888
200
text/css
Stylesheet
https://www.20.com/img/agent_index/logo_20.png?v=20210416081031311
h2
2315.2760000085
2408.2739999867
15317
14765
200
image/png
Image
https://www.20.com/img/0630/i-1.png
h2
2315.3969999985
2405.0989999669
1017
466
200
image/png
Image
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
h2
2319.8240000056
2410.7019999647
2502
1951
200
image/png
Image
https://www.20.com/img/close-white.png
h2
2319.9320000131
2410.057000001
1280
692
200
image/png
Image
https://wp.qiye.qq.com/qidian/2355054610/4793a8e7bf23a46acfa5fb1cf6d3ecd2
h2
2320.3760000179
3366.8279999983
2854
6720
200
application/x-javascript
Script
https://www.20.com/img/public_img/waba.png?v=20210416081031311
h2
2320.6099999952
2430.7019999833
19808
19256
200
image/png
Image
https://www.20.com/img/realname.png
h2
2320.9069999866
2412.5549999881
5116
4524
200
image/png
Image
https://static.anquan.org/static/outer/js/aq_auth.js
http/1.1
2321.1240000091
5070.532999991
1890
3051
200
application/javascript
Script
https://www.20.com/vendor/jquery/dist/jquery.min.js?v=20210416081031311
h2
2321.363999974
2430.0369999837
42042
97163
200
application/javascript
Script
https://www.20.com/vendor/jquery.cookie/jquery.cookie.min.js?v=20210416081031311
h2
2321.5220000129
2426.3909999863
1307
1232
200
application/javascript
Script
https://www.20.com/vendor/layui/layui.all.js?v=20210416081031311
h2
2321.7109999969
2515.7739999704
113737
278470
200
application/javascript
Script
https://www.20.com/vendor/export-excel/excel.js?v=20210416081031311
h2
2321.9319999916
2413.8459999813
1655
1846
200
application/javascript
Script
https://www.20.com/js/alert_dialog.min.js?v=20210416081031311
h2
2322.2539999988
2414.4419999793
5741
16071
200
application/javascript
Script
https://www.20.com/js/agent/agent.min.js?v=20210416081031311
h2
2322.4019999616
2429.3380000163
11676
32200
200
application/javascript
Script
https://www.20.com/js/components/common.min.js?v=20210416081031311
h2
2322.5380000076
2414.7469999734
4295
9026
200
application/javascript
Script
https://www.20.com/vendor/arttemplate/template.js?v=20210416081031311
h2
2322.6589999977
2415.0329999975
3480
5324
200
application/javascript
Script
https://www.20.com/js/index/index_index.min.js?v=20210416081031311
h2
2322.8409999865
2415.8210000023
2112
3246
200
application/javascript
Script
https://www.20.com/js/registration/listDownload.min.js?v=20210416081031311
h2
2323.0539999786
2415.5630000168
2130
3426
200
application/javascript
Script
https://www.20.com/js/module/header.min.js?v=20210416081031311
h2
2323.3570000157
2416.1069999682
5288
13230
200
application/javascript
Script
https://www.20.com/js/plugin/login_dialog.min.js?v=20210416081031311
h2
2324.2779999855
2514.480999962
3350
7876
200
application/javascript
Script
https://www.20.com/js/module/footer.min.js?v=20210416081031311
h2
2324.6609999915
2415.3240000014
2754
4745
200
application/javascript
Script
data
2427.1409999928
2427.257000003
0
3238
200
image/png
Image
https://www.20.com/img/index_image/index_icons.png
h2
2429.0529999998
2520.6619999954
23851
23299
200
image/png
Image
https://www.20.com/img/shop/shop_index_bg.jpg
h2
2429.243999999
2520.2290000161
37128
36533
200
image/jpeg
Image
https://www.20.com/img/shop/book_recomment_item_bg1.png
h2
2431.1839999864
2521.4350000024
4095
3507
200
image/png
Image
https://www.20.com/img/shop/book_recomment_item_icon.png
h2
2431.3369999873
2521.195999987
1520
973
200
image/png
Image
https://www.20.com/img/shop/domain/hot_auction_head_bg.png
h2
2431.4639999648
2520.9850000101
7035
6446
200
image/png
Image
https://www.20.com/img/shop/shop_head_bg.png
h2
2435.6820000103
2526.1820000014
29083
28535
200
image/png
Image
https://www.20.com/img/shop/trust_icon.png
h2
2435.9389999881
2526.6659999616
1643
1095
200
image/png
Image
https://www.20.com/img/shop/domain/auction_icon1.png
h2
2437.0329999947
2527.2160000168
829
280
200
image/png
Image
https://www.20.com/img/shop/domain/auction_icon2.png
h2
2437.2129999683
2526.9540000008
992
404
200
image/png
Image
https://www.20.com/img/shop/domain/auction_icon3.png
h2
2437.3759999871
2527.4499999941
984
396
200
image/png
Image
https://www.20.com/img/index_image/20-qrcode.jpg
h2
2439.4399999874
2530.0149999675
39598
39007
200
image/jpeg
Image
https://www.20.com/img/ios-btn.png
h2
2439.6120000165
2529.5219999971
5477
4888
200
image/png
Image
https://www.20.com/img/android-btn.png
h2
2439.8180000135
2529.2499999632
2590
2000
200
image/png
Image
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/pk1.js
http/1.1
3369.749000005
3579.648999963
58001
211069
200
application/x-javascript
Script
https://bqq.gtimg.com/da_market/i.js
http/1.1
3623.3899999643
3816.3690000074
15469
42082
200
application/x-javascript
Script
https://t.gdt.qq.com/conv/web/cookies/jsonp?cb=jsonp_cb_0_1618718797601_60&callback=jsonp_cb_0_1618718797601_60
http/1.1
3640.6899999711
4970.7139999955
327
53
200
application/x-javascript
Script
https://admin.qidian.qq.com/qbf/aBTest/getGrayLevel?kfuin=2355054610&callback=JSONP_CB_1_1618718797602_601&cb=JSONP_CB_1_1618718797602_601
http/1.1
3641.4130000048
4512.2250000131
529
48
200
application/json
Script
https://bqq.gtimg.com/qidian/src/sites/srv/wpa/conf/wpa/avatar/2-4.png
http/1.1
3641.7399999918
4166.1259999964
4840
4393
200
image/png
Image
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/images/1_4.png
http/1.1
3643.385000003
5036.260999972
1697
1250
200
image/png
Image
https://v.qidian.qq.com/events/report?kfuin=2355054610&type=wpa&qid=484718718797581&time=1618718797798&properties=%7B%22%24sdk_version%22%3A%221.2.0%22%2C%22%24page_id%22%3A%225gmq4t.ccr18p.knmndlvy%22%2C%22%24sdk_type%22%3A%22jssdk%22%2C%22%24title%22%3A%2220%E6%95%B0%E5%AD%97%E5%9F%9F%E5%90%8D%E5%95%86%E6%A0%87%E8%B5%84%E4%BA%A7%7C%E9%AB%98%E6%9D%83%E9%87%8D%E5%88%B0%E6%9C%9F%E6%B3%A8%E5%86%8C%E5%9F%9F%E5%90%8D%E6%8A%A2%E6%B3%A8_%E6%8F%90%E4%BE%9B%E5%9F%9F%E5%90%8D%E7%BB%8F%E7%BA%AA_%E8%80%81%E5%9F%9F%E5%90%8D_%E5%9F%9F%E5%90%8D%E4%B8%AD%E4%BB%8B_%E5%9F%9F%E5%90%8D%E4%B9%B0%E5%8D%96%E5%AF%84%E5%94%AE_%E5%9F%9F%E5%90%8D%E4%B8%80%E8%B5%B7%E8%B5%9A!%22%2C%22%24referrer%22%3A%22%22%2C%22%24url%22%3A%22https%3A%2F%2Fwww.20.com%2F%22%2C%22%24is_first_day%22%3Atrue%2C%22wpa_visitorid%22%3A484718718797581%2C%22wpa_cckey%22%3A%22%22%2C%22%24tz%22%3A7%2C%22%24level%22%3A%22%22%2C%22%24sw%22%3A360%2C%22%24sh%22%3A640%2C%22%24bw%22%3A1440%2C%22%24bh%22%3A2560%7D&event=%24pageview&z=q3rfzi
h2
4039.2020000145
4264.0179999871
181
35
200
image/gif
Image
https://webpage.qidian.qq.com/2/chat-customer/h5/index.html
http/1.1
4519.0929999808
4908.638999972
12833
39054
200
text/html
Document
https://webpage.qidian.qq.com/2/chat-customer/statusManager/index.html
http/1.1
4520.5459999852
5286.6649999633
997
1245
200
text/html
Document
https://v.qidian.qq.com/events/report?kfuin=2355054610&type=wpa&qid=484718718797581&time=1618718798602&properties=%7B%22%24sdk_version%22%3A%221.2.0%22%2C%22%24page_id%22%3A%225gmq4t.ccr18p.knmndlvy%22%2C%22%24sdk_type%22%3A%22jssdk%22%2C%22%24title%22%3A%2220%E6%95%B0%E5%AD%97%E5%9F%9F%E5%90%8D%E5%95%86%E6%A0%87%E8%B5%84%E4%BA%A7%7C%E9%AB%98%E6%9D%83%E9%87%8D%E5%88%B0%E6%9C%9F%E6%B3%A8%E5%86%8C%E5%9F%9F%E5%90%8D%E6%8A%A2%E6%B3%A8_%E6%8F%90%E4%BE%9B%E5%9F%9F%E5%90%8D%E7%BB%8F%E7%BA%AA_%E8%80%81%E5%9F%9F%E5%90%8D_%E5%9F%9F%E5%90%8D%E4%B8%AD%E4%BB%8B_%E5%9F%9F%E5%90%8D%E4%B9%B0%E5%8D%96%E5%AF%84%E5%94%AE_%E5%9F%9F%E5%90%8D%E4%B8%80%E8%B5%B7%E8%B5%9A!%22%2C%22%24referrer%22%3A%22%22%2C%22%24url%22%3A%22https%3A%2F%2Fwww.20.com%2F%22%2C%22%24is_first_day%22%3Atrue%2C%22wpa_visitorid%22%3A484718718797581%2C%22wpa_cckey%22%3A%22%22%2C%22wpaid%22%3A785%2C%22wpa_category_id%22%3A1%2C%22wpa_category%22%3A%22QQ%E6%8E%A5%E5%BE%85%22%2C%22wpa_type%22%3A3%2C%22kfext%22%3A2355054610%2C%22wpa_eventtp%22%3A1%2C%22wpa_tptype%22%3A1%2C%22wpa_tptype_name%22%3A%22%E4%BC%81%E4%B8%9AWPA%22%7D&event=im_wpa_view&z=wxatup
h2
4643.173999968
4864.6420000005
181
35
200
image/gif
Image
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/h5/css/chat-511fdbdba.css
http/1.1
4920.793999976
5644.816999964
37004
124506
200
text/css
Stylesheet
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/recorder-core.js
http/1.1
4921.0800000001
5116.5449999971
4523
8618
200
application/x-javascript
Script
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/beta-amr.js
http/1.1
4921.2069999776
5766.4009999717
132973
435682
200
application/x-javascript
Script
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/frequency.histogram.view.js
http/1.1
4922.2099999897
5425.5659999908
2326
3934
200
application/x-javascript
Script
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/lib.fft.js
http/1.1
4922.4570000079
5037.6340000075
861
737
200
application/x-javascript
Script
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/socket.io.js
http/1.1
4922.5919999881
5112.8460000036
21703
69047
200
application/x-javascript
Script
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/zepto.js
http/1.1
4922.6950000157
5350.8589999983
13097
34390
200
application/x-javascript
Script
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/i18n.js
http/1.1
4922.8409999632
5634.3689999776
1971
3991
200
application/x-javascript
Script
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/h5/js/chat-440c4571a.js
http/1.1
4923.0189999798
5091.6539999889
214522
570899
200
application/x-javascript
Script
https://static.anquan.org/static/outer/image/hy_124x47.png?id=www.20.com?t=41
http/1.1
5073.9840000169
7828.6789999693
2727
2390
200
image/png
Image
https://www.20.com/vendor/layui/css/modules/laydate/default/laydate.css?v=5.0.9
h2
5097.9689999949
5189.0339999809
2970
7537
200
text/css
Stylesheet
https://www.20.com/vendor/layui/css/modules/layer/default/layer.css?v=3.1.1
h2
5107.8369999886
5198.115999985
4817
19335
200
text/css
Stylesheet
https://www.20.com/vendor/layui/css/modules/code.css
h2
5117.2459999798
5208.2129999762
1107
1063
200
text/css
Stylesheet
https://hm.baidu.com/hm.js?66792ba421677552033a7bb7db52223d
http/1.1
5143.3180000167
7015.4379999731
15229
41609
200
application/javascript
Script
https://www.20.com/img/qq-icon.png
h2
5144.7620000108
5246.6080000158
1712
1122
200
image/png
Image
https://www.20.com/img/toBottom-icon.png
h2
5145.2820000122
5251.1470000027
1391
803
200
image/png
Image
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/jquery-1.12.4.min.js
http/1.1
5298.5660000122
5427.835999988
34425
97855
200
application/x-javascript
Script
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/socket.io.js
http/1.1
5298.788999964
5491.1759999814
21703
69047
200
application/x-javascript
Script
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/status/js/report-20afc6dcc.js
http/1.1
5298.9529999904
6012.4380000052
9741
38694
200
application/x-javascript
Script
https://mat1.gtimg.com/www/js/emonitor/index_20200103.js
http/1.1
5649.6550000156
6085.6839999906
8100
20827
200
application/javascript
Script
https://ia.51.la/go1?id=20469973&pvFlag=1
http/1.1
5968.5809999937
7421.5160000022
255
0
200
text/plain
Image
https://pingjs.qq.com/tcss.ping.https.js
http/1.1
5969.1219999804
6945.5629999866
4305
10245
200
application/javascript
Script
https://pingfore.qq.com/pingd?dm=webpage.qidian.qq.com&url=/2/chat-customer/h5/index.html&rdm=www.20.com&rurl=/&rarg=-&pvid=755526120&scr=360x640&scl=24-bit&lang=en-us&java=0&pf=Linux%20x86_64&tz=7&flash=-&ct=-&vs=tcss.3.1.5&ext=nw%3D1%3Btm%3D4%3Bch%3D2&hurlcn=&rand=14088&reserved1=-1&tt=
http/1.1
6954.2059999658
7936.6380000138
113
0
200
text/plain
Image
https://hm.baidu.com/hm.gif?cc=1&ck=1&cl=24-bit&ds=360x640&vl=2560&et=0&ja=0&ln=en-us&lo=0&rnd=51004716&si=66792ba421677552033a7bb7db52223d&v=1.2.80&lv=1&sn=4301&r=0&ww=1440&ct=!!&u=https%3A%2F%2Fwww.20.com%2F&tt=20%E6%95%B0%E5%AD%97%E5%9F%9F%E5%90%8D%E5%95%86%E6%A0%87%E8%B5%84%E4%BA%A7%7C%E9%AB%98%E6%9D%83%E9%87%8D%E5%88%B0%E6%9C%9F%E6%B3%A8%E5%86%8C%E5%9F%9F%E5%90%8D%E6%8A%A2%E6%B3%A8_%E6%8F%90%E4%BE%9B%E5%9F%9F%E5%90%8D%E7%BB%8F%E7%BA%AA_%E8%80%81%E5%9F%9F%E5%90%8D_%E5%9F%9F%E5%90%8D%E4%B8%AD%E4%BB%8B_%E5%9F%9F%E5%90%8D%E4%B9%B0%E5%8D%96%E5%AF%84%E5%94%AE_%E5%9F%9F%E5%90%8D%E4%B8%80%E8%B5%B7%E8%B5%9A!
http/1.1
7032.0070000016
8106.9639999769
299
43
200
image/gif
Image
https://fereport.qidian.qq.com/report/webim?type=1&subType=1&requestConsumTime=3422&addon=%7B%22domLoad%22%3A1452%7D&visitorid=484718718797581&kfuin=2355054610&tid=1000001&count=1&1618718802398
http/1.1
8437.5279999804
9423.1039999868
303
0
200
image/png
Image
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
2328.089
7.912
2339.911
5.28
2345.203
5.276
2449.783
156.758
2618.456
16.678
3614.357
54.631
3669.004
10.217
3846.608
18.06
4540.329
8.382
4937.95
5.604
4946.967
6.425
5098.731
94.592
5316.676
6.62
5461.296
15.308
5522.248
8.734
5678.423
5.395
5818.572
178.435
6041.539
16.346
6973.67
7.161
7046.023
12.888
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data

Metrics

First Contentful Paint — 2.6 s
The time taken for the first image or text on the page to be rendered.
Largest Contentful Paint — 3.0 s
The timing of the largest text or image that is painted.

Other

First Meaningful Paint — 2.6 s
The time taken for the primary content of the page to be rendered.
First Contentful Paint (3G) — 4890 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.

Opportunities

Eliminate render-blocking resources — Potential savings of 270 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. 20.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://www.20.com/vendor/font-awesome/css/font-awesome.min.css
8225
150
https://www.20.com/css/shop_scss.min.css?v=20210416081031311
24879
300
https://www.20.com/css/login_dialog.min.css?v=20210416081031311
1258
150
Minify CSS — Potential savings of 5 KiB
Cascading Style Sheets (CSS) files can contribute to network payload sizes. 20.com should consider minifying CSS files.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.20.com/vendor/layui/css/layui.css?v=20210416081031311
20893
4759
Remove unused CSS — Potential savings of 91 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. 20.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/h5/css/chat-511fdbdba.css
37004
35194
https://www.20.com/vendor/layui/css/layui.css?v=20210416081031311
20893
20287
.feedback-wrap-box .feedback-wrap{padding:0 16px;background:#FFFFFF;border:1px solid #E1E6F0; ... } ...
19901
19901
https://www.20.com/css/shop_scss.min.css?v=20210416081031311
24879
17618
Efficiently encode images — Potential savings of 9 KiB
Unoptimized images can consume more cellular data than what is necessary.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.20.com/img/index_image/20-qrcode.jpg
39007
9115
Serve images in next-gen formats — Potential savings of 115 KiB
Image formats like PNG and JPEG have poor compression when compared to other next-gen formats, such as JPEG 200, JPEG XR and WebP.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.20.com/img/index_image/20-qrcode.jpg
39007
31513
https://www.20.com/img/shop/shop_head_bg.png
28535
27801
https://www.20.com/img/shop/shop_index_bg.jpg
36533
25617
https://www.20.com/img/public_img/waba.png?v=20210416081031311
19256
18594
https://www.20.com/img/index_image/index_icons.png
23299
14559

Diagnostics

Avoid an excessive DOM size — 1,122 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
1122
Maximum DOM Depth
2259.com
15
Maximum Child Elements
body
29
Reduce JavaScript execution time — 1.4 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.20.com/
927.564
11.888
4.212
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/beta-amr.js
346.72
293.5
33.38
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/h5/js/chat-440c4571a.js
293.968
248.38
42.112
Unattributable
293.344
4.872
1.112
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/pk1.js
268.416
235.376
17.432
https://webpage.qidian.qq.com/2/chat-customer/h5/index.html
172.6
67.996
6.364
https://www.20.com/vendor/layui/layui.all.js?v=20210416081031311
114.116
92.336
18.812
https://hm.baidu.com/hm.js?66792ba421677552033a7bb7db52223d
83.232
65.452
4.932
https://www.20.com/vendor/jquery/dist/jquery.min.js?v=20210416081031311
78.724
54.924
6.696
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/socket.io.js
76.196
60.804
9.68
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/jquery-1.12.4.min.js
70.324
55.324
7.776
https://www.20.com/js/module/footer.min.js?v=20210416081031311
59.388
24.812
1.708
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/status/js/report-20afc6dcc.js
53.244
47.292
3.676
Minimize main-thread work — 3.2 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
1426.988
Style & Layout
706.468
Other
440.088
Script Parsing & Compilation
214.74
Rendering
212.544
Parse HTML & CSS
165.928
Garbage Collection
17.904

Metrics

Speed Index — 6.8 s
The time taken for the page contents to be visibly populated.
Time to Interactive — 10.6 s
The time taken for the page to become fully interactive.
Total Blocking Time — 670 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Other

First CPU Idle — 9.8 s
The time taken for the page's main thread to be quiet enough to handle input.
Max Potential First Input Delay — 710 ms
Users could experience a delay when interacting with the page.
Estimated Input Latency — 180 ms
The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive 20.com as laggy when the latency is higher than 0.05 seconds.

Opportunities

Remove unused JavaScript — Potential savings of 332 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/h5/js/chat-440c4571a.js
214522
108871
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/beta-amr.js
132973
92292
https://www.20.com/vendor/layui/layui.all.js?v=20210416081031311
113737
90388
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/jquery-1.12.4.min.js
34425
24060
https://www.20.com/vendor/jquery/dist/jquery.min.js?v=20210416081031311
42042
23981
Reduce initial server response time — Root document took 910 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.20.com/
912.563
Avoid multiple page redirects — Potential savings of 1,110 ms
Redirects can cause additional delays before the page can begin loading. 20.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://20.com/
630
https://20.com/
480
https://www.20.com/
0

Diagnostics

Serve static assets with an efficient cache policy — 69 resources found
20.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://www.20.com/vendor/layui/layui.all.js?v=20210416081031311
0
113737
https://www.20.com/vendor/jquery/dist/jquery.min.js?v=20210416081031311
0
42042
https://www.20.com/img/index_image/20-qrcode.jpg
0
39598
https://www.20.com/img/shop/shop_index_bg.jpg
0
37128
https://www.20.com/img/shop/shop_head_bg.png
0
29083
https://www.20.com/css/shop_scss.min.css?v=20210416081031311
0
24879
https://www.20.com/img/index_image/index_icons.png
0
23851
https://www.20.com/vendor/layui/css/layui.css?v=20210416081031311
0
20893
https://www.20.com/img/public_img/waba.png?v=20210416081031311
0
19808
https://www.20.com/img/agent_index/logo_20.png?v=20210416081031311
0
15317
https://www.20.com/js/agent/agent.min.js?v=20210416081031311
0
11676
https://www.20.com/vendor/font-awesome/css/font-awesome.min.css
0
8225
https://www.20.com/img/shop/domain/hot_auction_head_bg.png
0
7035
https://www.20.com/js/alert_dialog.min.js?v=20210416081031311
0
5741
https://www.20.com/img/ios-btn.png
0
5477
https://www.20.com/js/module/header.min.js?v=20210416081031311
0
5288
https://www.20.com/img/realname.png
0
5116
https://www.20.com/vendor/layui/css/modules/layer/default/layer.css?v=3.1.1
0
4817
https://www.20.com/js/components/common.min.js?v=20210416081031311
0
4295
https://www.20.com/img/shop/book_recomment_item_bg1.png
0
4095
https://www.20.com/vendor/arttemplate/template.js?v=20210416081031311
0
3480
https://www.20.com/js/plugin/login_dialog.min.js?v=20210416081031311
0
3350
https://www.20.com/css/common.min.css?v=20210416081031311
0
3073
https://www.20.com/js/module/footer.min.js?v=20210416081031311
0
2754
https://www.20.com/img/android-btn.png
0
2590
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
0
2502
https://www.20.com/js/registration/listDownload.min.js?v=20210416081031311
0
2130
https://www.20.com/js/index/index_index.min.js?v=20210416081031311
0
2112
https://www.20.com/img/qq-icon.png
0
1712
https://www.20.com/css/alert_dialog_scss.min.css?v=20210416081031311
0
1655
https://www.20.com/vendor/export-excel/excel.js?v=20210416081031311
0
1655
https://www.20.com/img/shop/trust_icon.png
0
1643
https://www.20.com/img/shop/book_recomment_item_icon.png
0
1520
https://www.20.com/img/toBottom-icon.png
0
1391
https://www.20.com/vendor/jquery.cookie/jquery.cookie.min.js?v=20210416081031311
0
1307
https://www.20.com/img/close-white.png
0
1280
https://www.20.com/css/login_dialog.min.css?v=20210416081031311
0
1258
https://www.20.com/vendor/layui/css/modules/code.css
0
1107
https://www.20.com/img/0630/i-1.png
0
1017
https://www.20.com/img/shop/domain/auction_icon2.png
0
992
https://www.20.com/img/shop/domain/auction_icon3.png
0
984
https://www.20.com/img/shop/domain/auction_icon1.png
0
829
https://admin.qidian.qq.com/qbf/aBTest/getGrayLevel?kfuin=2355054610&callback=JSONP_CB_1_1618718797602_601&cb=JSONP_CB_1_1618718797602_601
0
529
https://fereport.qidian.qq.com/report/webim?type=1&subType=1&requestConsumTime=3422&addon=%7B%22domLoad%22%3A1452%7D&visitorid=484718718797581&kfuin=2355054610&tid=1000001&count=1&1618718802398
0
303
https://ia.51.la/go1?id=20469973&pvFlag=1
0
255
https://v.qidian.qq.com/events/report?kfuin=2355054610&type=wpa&qid=484718718797581&time=1618718797798&properties=%7B%22%24sdk_version%22%3A%221.2.0%22%2C%22%24page_id%22%3A%225gmq4t.ccr18p.knmndlvy%22%2C%22%24sdk_type%22%3A%22jssdk%22%2C%22%24title%22%3A%2220%E6%95%B0%E5%AD%97%E5%9F%9F%E5%90%8D%E5%95%86%E6%A0%87%E8%B5%84%E4%BA%A7%7C%E9%AB%98%E6%9D%83%E9%87%8D%E5%88%B0%E6%9C%9F%E6%B3%A8%E5%86%8C%E5%9F%9F%E5%90%8D%E6%8A%A2%E6%B3%A8_%E6%8F%90%E4%BE%9B%E5%9F%9F%E5%90%8D%E7%BB%8F%E7%BA%AA_%E8%80%81%E5%9F%9F%E5%90%8D_%E5%9F%9F%E5%90%8D%E4%B8%AD%E4%BB%8B_%E5%9F%9F%E5%90%8D%E4%B9%B0%E5%8D%96%E5%AF%84%E5%94%AE_%E5%9F%9F%E5%90%8D%E4%B8%80%E8%B5%B7%E8%B5%9A!%22%2C%22%24referrer%22%3A%22%22%2C%22%24url%22%3A%22https%3A%2F%2Fwww.20.com%2F%22%2C%22%24is_first_day%22%3Atrue%2C%22wpa_visitorid%22%3A484718718797581%2C%22wpa_cckey%22%3A%22%22%2C%22%24tz%22%3A7%2C%22%24level%22%3A%22%22%2C%22%24sw%22%3A360%2C%22%24sh%22%3A640%2C%22%24bw%22%3A1440%2C%22%24bh%22%3A2560%7D&event=%24pageview&z=q3rfzi
0
181
https://v.qidian.qq.com/events/report?kfuin=2355054610&type=wpa&qid=484718718797581&time=1618718798602&properties=%7B%22%24sdk_version%22%3A%221.2.0%22%2C%22%24page_id%22%3A%225gmq4t.ccr18p.knmndlvy%22%2C%22%24sdk_type%22%3A%22jssdk%22%2C%22%24title%22%3A%2220%E6%95%B0%E5%AD%97%E5%9F%9F%E5%90%8D%E5%95%86%E6%A0%87%E8%B5%84%E4%BA%A7%7C%E9%AB%98%E6%9D%83%E9%87%8D%E5%88%B0%E6%9C%9F%E6%B3%A8%E5%86%8C%E5%9F%9F%E5%90%8D%E6%8A%A2%E6%B3%A8_%E6%8F%90%E4%BE%9B%E5%9F%9F%E5%90%8D%E7%BB%8F%E7%BA%AA_%E8%80%81%E5%9F%9F%E5%90%8D_%E5%9F%9F%E5%90%8D%E4%B8%AD%E4%BB%8B_%E5%9F%9F%E5%90%8D%E4%B9%B0%E5%8D%96%E5%AF%84%E5%94%AE_%E5%9F%9F%E5%90%8D%E4%B8%80%E8%B5%B7%E8%B5%9A!%22%2C%22%24referrer%22%3A%22%22%2C%22%24url%22%3A%22https%3A%2F%2Fwww.20.com%2F%22%2C%22%24is_first_day%22%3Atrue%2C%22wpa_visitorid%22%3A484718718797581%2C%22wpa_cckey%22%3A%22%22%2C%22wpaid%22%3A785%2C%22wpa_category_id%22%3A1%2C%22wpa_category%22%3A%22QQ%E6%8E%A5%E5%BE%85%22%2C%22wpa_type%22%3A3%2C%22kfext%22%3A2355054610%2C%22wpa_eventtp%22%3A1%2C%22wpa_tptype%22%3A1%2C%22wpa_tptype_name%22%3A%22%E4%BC%81%E4%B8%9AWPA%22%7D&event=im_wpa_view&z=wxatup
0
181
https://pingfore.qq.com/pingd?dm=webpage.qidian.qq.com&url=/2/chat-customer/h5/index.html&rdm=www.20.com&rurl=/&rarg=-&pvid=755526120&scr=360x640&scl=24-bit&lang=en-us&java=0&pf=Linux%20x86_64&tz=7&flash=-&ct=-&vs=tcss.3.1.5&ext=nw%3D1%3Btm%3D4%3Bch%3D2&hurlcn=&rand=14088&reserved1=-1&tt=
0
113
https://www.20.com/vendor/layui/css/modules/laydate/default/laydate.css?v=5.0.9
300000
2970
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/h5/js/chat-440c4571a.js
600000
214522
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/beta-amr.js
600000
132973
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/pk1.js
600000
58001
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/h5/css/chat-511fdbdba.css
600000
37004
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/jquery-1.12.4.min.js
600000
34425
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/socket.io.js
600000
21703
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/socket.io.js
600000
21703
https://bqq.gtimg.com/da_market/i.js
600000
15469
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/zepto.js
600000
13097
https://webpage.qidian.qq.com/qidian_customer/chatClient/release/status/js/report-20afc6dcc.js
600000
9741
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/recorder-core.js
600000
4523
https://pingjs.qq.com/tcss.ping.https.js
600000
4305
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/frequency.histogram.view.js
600000
2326
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/i18n.js
600000
1971
https://webpage.qidian.qq.com/qidian/chatClient/release/comp/js/lib/lib.fft.js
600000
861
https://static.anquan.org/static/outer/image/hy_124x47.png?id=www.20.com?t=41
86400000
2727
https://static.anquan.org/static/outer/js/aq_auth.js
86400000
1890
https://mat1.gtimg.com/www/js/emonitor/index_20200103.js
604800000
8100
https://bqq.gtimg.com/qidian/src/sites/srv/wpa/conf/wpa/avatar/2-4.png
2592000000
4840
https://bqq.gtimg.com/qidian/src/wpa/dist/5.0.0/images/1_4.png
2592000000
1697
Reduce the impact of third-party code — Third-party code blocked the main thread for 420 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
517472
423.328
SHOW DETAILS
15528
0
Does not use passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Source
SHOW DETAILS
SHOW DETAILS
SHOW DETAILS
SHOW DETAILS
SHOW DETAILS
Avoid `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Source
SHOW DETAILS
SHOW DETAILS
Image elements do not have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
URL Failing Elements
https://www.20.com/img/agent_index/logo_20.png?v=20210416081031311
img
https://www.20.com/img/realname.png
img
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
img
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
img
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
img
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
img
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
img
https://www.20.com/img/shop/user-icon.png?v=20210416081031311
img
https://www.20.com/img/0630/i-1.png
img
68

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of 20.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
`<object>` elements have `[alt]` text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
20.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Navigation

The page does not contain a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
Failing Elements
html

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
域名搜索
whois查询
被墙查询
污染查询
拦截检测
查询
首页
域名抢注
竞拍大厅
淘域名
域名查询
域名经纪
管理中心
近期删除
纯数字
高收录
高PR
百度高反链
高Sg反链
高年龄
高权重
26（稀少）
更多>>
132566.00
当前价格
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105029.00
当前价格
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98005.00
当前价格
剩余时间
64387.00
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49867.00
当前价格
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40877.00
当前价格
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34177.00
当前价格
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32300.00
当前价格
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32090.00
当前价格
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23890.00
当前价格
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21138.00
当前价格
剩余时间
21090.00
当前价格
剩余时间
3328.com
精品四数字域名，联系Q63888
800000元
当前价格
剩余时间
1200.com
精品四数字域名，联系Q63888
1180000元
当前价格
剩余时间
v.cc
极品单字母域名，联系Q63888
1780000元
当前价格
剩余时间
2726.com
精品四数字域名，联系Q63888
450000元
当前价格
剩余时间
q3.com
精品二杂字域名，联系Q63888
1080000元
当前价格
剩余时间
506.tv
TV优质域名
6380元
当前价格
剩余时间
55m.com
米表67888.com
176000元
当前价格
剩余时间
2259.com
精品四数字域名，联系Q63888
650000元
当前价格
剩余时间
6007.com
精品四数字域名，联系Q63888
850000元
当前价格
剩余时间
8930.com
174777元
当前价格
剩余时间
域名
一口价
卖家
操作
￥650000
ID:9800
￥450000
ID:9800
￥1180000
ID:9800
￥1780000
ID:9800
￥850000
ID:9800
￥800000
ID:9800
域名
简介
参考售价
代理价
操作
￥480000
￥****
￥450000
￥****
￥350000
￥****
￥600000
￥****
￥650000
￥****
￥360000
￥****
￥650000
￥****
￥450000
￥****
p**.com
3***.com
1**.com
3****.com
2****.com
1****.com
5****.com
2****.com
9**.cc
k*.vip
5**.tv
1****.com
7****.com
1****.com
6*.cc
u**.com
7**.tv
g***.com
5**.tv
6**.tv
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2021-04-16
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2021-04-18
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2021-04-18
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2021-04-17
厦门巨虎网络科技有限公司旗下网站：20.com     法律顾问：福建道衍律师事务所
闽ICP备16020253号－6      闽公网安备 35020302032683号      增值电信业务经营许可证：闽B2-20170219
闽ICP备16020253号－6
闽公网安备 35020302032683号

Names and labels

`<frame>` or `<iframe>` elements do not have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Failing Elements
iframe
iframe
iframe
iframe
Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Failing Elements
img
img
img
img
img
img
img
Links do not have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.

Best practices

`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.
Failing Elements
meta

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
60

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that 20.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Avoids Application Cache
Application cache is deprecated and is no longer recommended.
Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
1.12.4
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://20.com/
Allowed
Links to cross-origin destinations are unsafe
Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.
Includes front-end JavaScript libraries with known security vulnerabilities — 4 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
SHOW DETAILS
4
Medium

Audits

Serves images with low resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
URL Displayed size Actual size Expected size
https://www.20.com/img/0630/i-1.png
16 x 16
18 x 18
32 x 32

Audits

Registers an `unload` listener
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
Source
SHOW DETAILS
SHOW DETAILS
SHOW DETAILS
Browser errors were logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Source Description
SHOW DETAILS
WebSocket connection to 'wss://chat.qidian.qq.com/status/?queryId=985618718799982&EIO=3&transport=websocket' failed: Error in connection establishment: net::ERR_NAME_NOT_RESOLVED
SHOW DETAILS
WebSocket connection to 'wss://chat.qidian.qq.com/status/?queryId=985618718799982&EIO=3&transport=websocket' failed: Error in connection establishment: net::ERR_NAME_NOT_RESOLVED
SHOW DETAILS
WebSocket connection to 'wss://chat.qidian.qq.com/status/?queryId=985618718799982&EIO=3&transport=websocket' failed: Error in connection establishment: net::ERR_NAME_NOT_RESOLVED
83

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for 20.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of 20.com on mobile screens.
Document uses legible font sizes — 100% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Source Selector % of Page Text Font Size
SHOW DETAILS
.toolbar .toolbar-input-content
0.00%
0px
SHOW DETAILS
nav.nav ul
0.00%
0px
SHOW DETAILS
.index-container
0.00%
0px
SHOW DETAILS
footer .footer-link
0.00%
0px
SHOW DETAILS
footer .footer-contact
0.00%
0px
SHOW DETAILS
100.00%
≥ 12px

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Mobile Friendly

Tap targets are not sized appropriately — 92% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.
Tap Target Size Overlapping Target
巨虎创投
180x30
易名中国
易名中国
180x30
DNS.COM
DNS.COM
180x30
聚名网
关于我们
180x30
联系我们
联系我们
180x30
公司资质
公司资质
180x30
成立背景
常见问题
180x30
域名快讯
域名快讯
180x30
信息公告

Crawling and Indexing

Links are not crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Content Best Practices

Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Failing Elements
img
img
img
img
img
img
img

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
33

Progressive Web App

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of 20.com. This includes details about web app manifests.

PWA Optimized

Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of 20.com on mobile screens.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Content is not sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting

Server Location

Server IP Address: 47.246.43.172
Continent: North America
Country: United States
United States Flag
Region:
City:
Longitude: -97.822
Latitude: 37.751
Currencies: USD
USN
USS
Languages: English

Web Hosting Provider

Name IP Address
Alibaba.com LLC
Registration

Domain Registrant

Private Registration: No
Name:
Organization:
Country:
City:
State:
Post Code:
Email:
Phone:
Note: Registration information is derived from various sources and may be inaccurate.

Domain Registrar

Name IP Address
eName Technology Co.,Ltd. 117.25.139.79
Security

Visitor Safety

Mature Content: Not Likely
McAfee WebAdvisor Rating: Safe
WOT Rating: 2/5 (0 reviews)
WOT Trustworthiness: 40/100
WOT Child Safety: 10/100
Note: Safety information is not guaranteed.

SSL/TLS Certificate

Issued To: 20.com
Issued By: Shuidi Webtrust SSL Organization Validated
Valid From: 28th September, 2020
Valid To: 28th September, 2021
Subject: CN = 20.com
O = 厦门巨虎网络科技有限公司
L = 厦门
S = CN
Hash: 632ddbc2
Issuer: CN = Shuidi Webtrust SSL Organization Validated
O = Shanghai Ping An Credit Reference Company Limited
S = CN
Version: 2
Serial Number: 44446468818511152402093145550114917348
Serial Number (Hex): 2170141A044B196A658CB2561C0A0BE4
Valid From: 28th September, 2024
Valid To: 28th September, 2024
Signature Algorithm (Short Name): RSA-SHA256
Signature Algorithm (Long Name): sha256WithRSAEncryption
Authority Key Identifier: keyid:E8:46:10:C7:72:9E:3F:29:F1:CE:74:7A:C2:55:96:6F:20:25:A8:42
Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication
CRL Distribution Points:
Full Name:
URI:http://shuidiov.crl.certum.pl/shuidiov.crl
Certificate Policies: Policy: 2.23.140.1.2.2
Policy: 1.2.616.1.113527.2.5.1.9.25.2
CPS: https://www.certum.pl/CPS
Authority Information Access: OCSP - URI:http://shuidiov.ocsp-certum.com
CA Issuers - URI:http://repository.certum.pl/shuidiov.cer
SCT List: Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 44:94:65:2E:B0:EE:CE:AF:C4:40:07:D8:A8:FE:28:C0:
DA:E6:82:BE:D8:CB:31:B5:3F:D3:33:96:B5:B6:81:A8
Timestamp : Sep 28 08:36:38.182 2020 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:1C:4F:97:81:A0:BF:AE:3F:A7:27:19:AB:
00:64:0D:70:43:EC:BD:C4:4A:AE:11:0A:64:20:FA:FC:
42:03:C7:CB:02:20:6E:93:9E:09:6F:2E:20:A8:A9:5B:
BA:AC:8E:E1:7F:AB:27:4C:07:EE:8E:E2:02:6C:C9:70:
7E:1B:3C:BA:CC:14
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : F6:5C:94:2F:D1:77:30:22:14:54:18:08:30:94:56:8E:
E3:4D:13:19:33:BF:DF:0C:2F:20:0B:CC:4E:F1:64:E3
Timestamp : Sep 28 08:36:38.154 2020 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:CA:DE:51:CA:E7:C4:5E:42:77:8F:DA:
B7:7B:FE:54:3D:E2:47:74:59:1B:B1:BA:96:07:0A:A9:
C8:0D:A4:96:D5:02:21:00:DE:73:61:14:4D:B6:C7:4B:
A9:FC:42:ED:45:81:90:BE:C3:FA:F9:E8:DF:2F:6D:BD:
21:B8:0C:B9:C1:57:22:ED
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 55:81:D4:C2:16:90:36:01:4A:EA:0B:9B:57:3C:53:F0:
C0:E4:38:78:70:25:08:17:2F:A3:AA:1D:07:13:D3:0C
Timestamp : Sep 28 08:36:38.510 2020 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:12:6D:61:04:17:05:56:05:49:D5:B6:B1:
95:7E:E9:7E:7D:8A:1B:FF:61:F0:F4:A2:A1:E2:6E:C1:
59:6D:3D:23:02:20:21:72:B1:E6:7E:BC:4E:59:1F:F0:
E8:29:BD:29:B3:7E:02:ED:81:2B:08:B6:14:0E:C0:AF:
75:3F:AB:4E:10:8B
Key Usage: Digital Signature, Key Encipherment
Basic Constraints: CA:FALSE
Subject Alternative Name: DNS:www.20.com
DNS:20.com
Technical

DNS Lookup

HTTP Response Headers

Whois Lookup

Created: 24th November, 1995
Changed: 11th March, 2021
Expires: 23rd November, 2024
Registrar: eName Technology Co.,Ltd.
Status: clientDeleteProhibited
clientTransferProhibited
Nameservers: v1.dns.com
v2.dns.com
Owner State: FuJian
Owner Country: CN
Owner Email: https://whois.ename.net/contact/20.com
Admin Email: https://whois.ename.net/contact/20.com
Tech Email: https://whois.ename.net/contact/20.com
Full Whois: Domain Name: 20.com
Registry Domain ID: 1033325_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.ename.com
Registrar URL: http://www.ename.net
Updated Date: 2021-03-11T14:13:50Z
Creation Date: 1995-11-24T05:00:00Z
Registrar Registration Expiration Date: 2024-11-23T05:00:00Z
Registrar: eName Technology Co.,Ltd.
Registrar IANA ID: 1331
Registrar Abuse Contact Email: abuse@ename.com
Registrar Abuse Contact Phone: +86.4000044400
Domain Status: clientDeleteProhibited https://www.icann.org/epp#clientDeleteProhibited
Domain Status: clientTransferProhibited https://www.icann.org/epp#clientTransferProhibited
Registrant State/Province: FuJian
Registrant Country: CN
Registrant Email: https://whois.ename.net/contact/20.com
Admin Email: https://whois.ename.net/contact/20.com
Tech Email: https://whois.ename.net/contact/20.com
Name Server:V1.DNS.COM
Name Server:V2.DNS.COM
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2021-04-18T12:05:41Z <<<

For more information on Whois status codes, please visit
https://www.icann.org/resources/pages/epp-status-codes-2014-06-16-en
View Raw Whois

Nameservers

Name IP Address
v1.dns.com 218.98.111.204
v2.dns.com 211.99.99.31
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