AlexaWhoisServer InformationDesktop SpeedMobile SpeedMobile UsabilityHTML ErrorsPingTraceroute

CSDN.NET CSDN-专业IT技术社区

csdn.net Website Information

Daily Unique Visits: 1,818,456

Daily Page Views: 14,547,648

Income Per Day: $14,548

Estimated Value: $15,711,840

This website is located in China and is using following IP address 124.70.25.132. See the complete list of popular websites hosted in China.

csdn.net is registered under .NET top-level domain. Please check other sites in .NET zone.

Website csdn.net is using the following name servers:

  • vip4.alidns.com
  • vip3.alidns.com

and is probably hosted by HWCSNET Huawei Cloud Service data center, CN. See the full list of other websites hosted by HWCSNET Huawei Cloud Service data center, CN.

The highest website csdn.net position in Alexa rank database was 830 and the lowest rank position was 873. Current position of csdn.net in Alexa rank database is 838.

Desktop speed score of csdn.net (46/100) is better than the results of 19.93% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of csdn.net (100/100) is better than the results of 100% of other sites and means that the page is mobile-friendly.

Mobile speed score of csdn.net (57/100) is better than the results of 48.04% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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csdn.net Alexa Rank

The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.

csdn.net whois

WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.

Domain Name: CSDN.NET
Registry Domain ID: 4252779_DOMAIN_NET-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2021-12-02T08:57:35Z
Creation Date: 1999-03-11T05:00:00Z
Registry Expiry Date: 2023-03-11T04:00:00Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: DomainAbuse@service.aliyun.com
Registrar Abuse Contact Phone: +86.95187
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: VIP3.ALIDNS.COM
Name Server: VIP4.ALIDNS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2022-05-14T06:06:20Z

csdn.net server information

Servers Location

csdn.net desktop page speed rank

Last tested: 2016-06-12

Desktop Speed Bad
46/100

csdn.net Desktop Speed Test Quick Summary


priority - 56Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 545.7KiB (68% reduction).

Compressing and resizing http://images.csdn.net/20160606/201601201852336570.png could save 184.8KiB (93% reduction).
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priority - 24Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 235.3KiB (72% reduction).

Compressing http://ask.csdn.net/js/jquery-1.11.1.min.js could save 61.1KiB (65% reduction).
Compressing http://a.yunshipei.com/csdnnet/allmobilize.min.js could save 56.5KiB (65% reduction).
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Compressing http://ask.csdn.net/js/jquery.form.js could save 30.9KiB (72% reduction).
Compressing http://ads.csdn.net/get_ads.php?ip=null&zones=149%…A%2F%2Fwww.csdn.net%2F could save 10KiB (75% reduction).
Compressing http://ads.csdn.net/js/async_new.js could save 9.7KiB (72% reduction).
Compressing http://ads.csdn.net/js/tracking.js could save 6.5KiB (65% reduction).
Compressing http://www.csdn.net/js/swapImg_openLayer.js could save 6KiB (75% reduction).
Compressing http://ads.csdn.net/js/popuLayer.js could save 3.5KiB (68% reduction).

priority - 20Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

http://a.yunshipei.com/csdnnet/allmobilize.min.js (expiration not specified)
http://ads.csdn.net/js/async_new.js (expiration not specified)
http://ads.csdn.net/js/popuLayer.js (expiration not specified)
http://ads.csdn.net/js/tracking.js (expiration not specified)
http://ask.csdn.net/js/jquery-1.11.1.min.js (expiration not specified)
http://ask.csdn.net/js/jquery.form.js (expiration not specified)
http://c.csdnimg.cn/comm_ask/css/ask_float_block.css (expiration not specified)
http://c.csdnimg.cn/comm_ask/js/apps/ask_float_block.js (expiration not specified)
http://c.csdnimg.cn/public/common/libs/jquery/jquery-1.11.1.min.js (expiration not specified)
http://c.csdnimg.cn/www/css/csdn_common.css (expiration not specified)
http://c.csdnimg.cn/www/images/ali.png (expiration not specified)
http://counter.csdn.net/a/js/AreaCounter.js (expiration not specified)
http://images.csdn.net/20160531/%E7%A8%8B%E5%BA%8F…%E5%89%AF%E6%9C%AC.jpg (expiration not specified)
http://images.csdn.net/20160601/%7B85CAD45D-CBA8-4…7D-7D103170B225%7D.jpg (expiration not specified)
http://images.csdn.net/20160606/%E4%B8%93%E9%A2%98%E5%9B%BE%E6%A0%872.jpg (expiration not specified)
http://images.csdn.net/20160606/201601201852336570.png (expiration not specified)
http://images.csdn.net/20160606/201603091019102749.jpg (expiration not specified)
http://images.csdn.net/20160606/201605261050426541%20(1).png (expiration not specified)
http://images.csdn.net/20160607/3-14040411004OJ.jpg (expiration not specified)
http://images.csdn.net/20160608/20160607104144565.png (expiration not specified)
http://images.csdn.net/20160608/20160607164925138.png (expiration not specified)
http://images.csdn.net/20160608/up2.jpg (expiration not specified)
http://images.csdn.net/20160610/shutterstock_251439562.jpg (expiration not specified)
http://images.csdn.net/20160611/231325120788857.jpg (expiration not specified)
http://images.csdn.net/20160611/QQ%E6%88%AA%E5%9B%…%E5%89%AF%E6%9C%AC.png (expiration not specified)
http://message.csdn.net/msg.popup.js (expiration not specified)
http://public.download.csdn.net/uploads_album/2016…e84f17ae3d80bea53e.jpg (expiration not specified)
http://public.download.csdn.net/uploads_album/2016…9ea2da1660761fd41b.jpg (expiration not specified)
http://public.download.csdn.net/uploads_album/2016…538f67025314cc642b.jpg (expiration not specified)
http://public.download.csdn.net/uploads_album/2016…77a1ed14a2ecd6624f.jpg (expiration not specified)
http://public.download.csdn.net/uploads_album/2016…e9c8d89ad0f199daab.jpg (expiration not specified)
http://www.csdn.net/css/content.css (expiration not specified)
http://www.csdn.net/css/logo.png (expiration not specified)
http://www.csdn.net/css/x.png (expiration not specified)
http://www.csdn.net/css/y.png (expiration not specified)
http://www.csdn.net/js/swapImg_openLayer.js (expiration not specified)
http://www.csdn.net/ui/scripts/Csdn/counter.js (expiration not specified)
http://cbjs.baidu.com/js/m.js (60 minutes)
http://cpro.baidustatic.com/cpro/ui/c.js (60 minutes)
http://avatar.csdn.net/9/F/0/1_androidlushangderen.jpg (24 hours)

priority - 18Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 18 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://a.yunshipei.com/csdnnet/allmobilize.min.js
http://c.csdnimg.cn/pubfooter/js/repoAddr2.js?v=0.5629411400295794
http://c.csdnimg.cn/public/common/libs/jquery/jquery-1.11.1.min.js
http://ads.csdn.net/js/tracking.js
http://www.csdn.net/js/swapImg_openLayer.js
http://counter.csdn.net/a/js/AreaCounter.js
http://c.csdnimg.cn/comm_ask/js/libs/wmd.js
http://c.csdnimg.cn/comm_ask/js/libs/showdown.js
http://c.csdnimg.cn/comm_ask/js/libs/prettify.js
http://c.csdnimg.cn/comm_ask/js/apps/ask_float_block.js
http://www.csdn.net/ui/scripts/Csdn/counter.js
http://message.csdn.net/msg.popup.js
http://ads.csdn.net/js/async_new.js
http://c.csdnimg.cn/rabbit/notev2/js/notify.js?12214051=
http://c.csdnimg.cn/pubfooter/js/tracking.js?12214051=
http://csdnimg.cn/pubfooter/js/repoAddr2.js?v=0.4674630036781866
http://csdnimg.cn/rabbit/tracking-ad/main.js?75eacd6
http://cbjs.baidu.com/js/m.js

Optimize CSS Delivery of the following:

http://c.csdnimg.cn/www/css/csdn_common.css
http://www.csdn.net/css/content.css
http://c.csdnimg.cn/comm_ask/css/ask_float_block.css
http://ask.csdn.net/assets/ask_float_fonts_css-6b3…3a2a045e3df585b475.css

priority - 9Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 90.6KiB (38% reduction).

Minifying http://ask.csdn.net/js/jquery.form.js could save 23.7KiB (55% reduction).
Minifying http://c.csdnimg.cn/comm_ask/js/libs/showdown.js could save 21.2KiB (30% reduction) after compression.
Minifying http://message.csdn.net/msg.popup.js could save 13.6KiB (26% reduction).
Minifying http://ads.csdn.net/js/async_new.js could save 8.4KiB (62% reduction).
Minifying http://ads.csdn.net/js/tracking.js could save 6KiB (60% reduction).
Minifying http://www.csdn.net/js/swapImg_openLayer.js could save 4.5KiB (56% reduction).
Minifying http://c.csdnimg.cn/comm_ask/js/apps/ask_float_block.js could save 4.2KiB (36% reduction) after compression.
Minifying http://c.csdnimg.cn/rabbit/notev2/js/notify.js?12214051= could save 3.4KiB (32% reduction) after compression.
Minifying http://ads.csdn.net/js/popuLayer.js could save 1.8KiB (35% reduction).
Minifying http://c.csdnimg.cn/comm_ask/js/libs/wmd.js could save 1.5KiB (25% reduction) after compression.
Minifying http://c.csdnimg.cn/pubfooter/js/tracking.js?12214051= could save 1.3KiB (38% reduction) after compression.
Minifying http://csdnimg.cn/rabbit/tracking-ad/main.js?75eacd6 could save 1KiB (35% reduction) after compression.

priority - 2Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Only about 34% of the final above-the-fold content could be rendered with the full HTML response.

priority - 0Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

Minify HTML for the following resources to reduce their size by 4.7KiB (23% reduction).

Minifying http://www.csdn.net/ could save 4.7KiB (23% reduction) after compression.

priority - 0Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 539B (14% reduction).

Minifying http://www.csdn.net/css/content.css could save 539B (14% reduction) after compression.

csdn.net Desktop Resource Breakdown

Total Resources126
Number of Hosts18
Static Resources74
JavaScript Resources23
CSS Resources4

csdn.net mobile page speed rank

Last tested: 2019-12-02

Mobile Speed Bad
57/100

csdn.net Mobile Speed Test Quick Summary


priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://www.csdn.net/js/jquery-1.4.2.min.js
http://tjs.sjs.sinajs.cn/open/api/js/wb.js?appkey=

Optimize CSS Delivery of the following:

http://m.csdn.net/css/news.css

priority - 26Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

http://csdn.net/
http://www.csdn.net/
http://m.csdn.net/

priority - 8Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

http://m.csdn.net/css/news.css (expiration not specified)
http://m.csdn.net/images/btn_bg.png (expiration not specified)
http://m.csdn.net/images/comments_s.png (expiration not specified)
http://m.csdn.net/images/icon_search.png (expiration not specified)
http://m.csdn.net/images/line_bottom.gif (expiration not specified)
http://m.csdn.net/images/logo.png (expiration not specified)
http://m.csdn.net/images/tag_bg.png (expiration not specified)
http://m.csdn.net/images/tit_bg1.gif (expiration not specified)
http://m.csdn.net/images/top_bg.png (expiration not specified)
http://www.csdn.net/js/jquery-1.4.2.min.js (expiration not specified)
http://www.google-analytics.com/ga.js (2 hours)

priority - 5Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 51.6KiB (66% reduction).

Compressing http://www.csdn.net/js/jquery-1.4.2.min.js could save 46.5KiB (65% reduction).
Compressing http://m.csdn.net/main_json.html/1?jsonpcallback=backdata&reload=1 could save 5.1KiB (71% reduction).

priority - 1Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 8.3KiB (67% reduction).

Losslessly compressing http://m.csdn.net/images/btn_bg.png could save 2.5KiB (91% reduction).
Losslessly compressing http://m.csdn.net/images/logo.png could save 2.3KiB (47% reduction).
Losslessly compressing http://m.csdn.net/images/line_bottom.gif could save 1,008B (92% reduction).
Losslessly compressing http://m.csdn.net/images/tag_bg.png could save 933B (84% reduction).
Losslessly compressing http://m.csdn.net/images/comments_s.png could save 802B (67% reduction).
Losslessly compressing http://m.csdn.net/images/icon_search.png could save 791B (60% reduction).

csdn.net Mobile Resource Breakdown

Total Resources17
Number of Hosts5
Static Resources12
JavaScript Resources4
CSS Resources1

csdn.net mobile page usability

Last tested: 2019-12-02

Mobile Usability Good
100/100

csdn.net HTML validation

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

Line: 6 Column: 5 - 130
"...dge"> <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"> <..."

The “type” attribute is unnecessary for JavaScript resources.

Line: 12 Column: 5 - 77
"...社区."> <script src='//g.csdnimg.cn/tingyun/1.8.3/www.js' type='text/javascript'></scri..." Line: 18 Column: 5 - 100
"...css"> <script src="//csdnimg.cn/public/common/libs/jquery/jquery-1.9.1.min.js" type="text/javascript"></scri..." Line: 22 Column: 5 - 183
"...www"> <script id="toolbar-tpl-scriptId" prod="download" skin="black" src="//csdnimg.cn/public/common/toolbar/js/content_toolbar.js" type="text/javascript" domain="http://blog.csdn.net"></scri..." Line: 785 Column: 1 - 65
"...> </body> <script src='/js/modernizr.js?1592384845' type='text/javascript'></scri..." Line: 786 Column: 1 - 99
"...</script> <script src="//csdnimg.cn/public/common/libs/bootstrap/js/bootstrap.min.js" type="text/javascript"></scri..." Line: 787 Column: 1 - 75
"...</script> <script src="//g.csdnimg.cn/report/1.5.0/report.js" type="text/javascript"></scri..." Line: 788 Column: 1 - 89
"...</script> <script src="//g.csdnimg.cn/fixed-sidebar/1.1.1/fixed-sidebar.js" type="text/javascript"></scri..." Line: 789 Column: 1 - 91
"...</script> <script type="text/javascript" src="https://g.csdnimg.cn/user-tooltip/1.7/user-tooltip.js"></scri..." Line: 790 Column: 1 - 53
"...cript> <script language="javascript" type="text/javascript"> // Tr..." Line: 872 Column: 1 - 69
"...</script> <script src='/js/csdn_feed.min.js?1592384845' type='text/javascript'></scri..."

The first occurrence of ID “Star-Copy” was here.

Line: 552 Column: 49 - 902
"... <polygon id="Star-Copy" fill="#2E98FF" fill-rule="evenodd" points="8 14.4194952 6.94410373 14.6666667 6.0162669 14.1053027 4.93566968 14.0140869 4.22671542 13.1934807 3.22719363 12.7728064 2.80651932 11.7732846 1.98591312 11.0643303 1.89469729 9.9837331 1.33333333 9.05589627 1.58050484 8 1.33333333 6.94410373 1.89469729 6.0162669 1.98591312 4.93566968 2.80651932 4.22671542 3.22719363 3.22719363 4.22671542 2.80651932 4.93566968 1.98591312 6.0162669 1.89469729 6.94410373 1.33333333 8 1.58050484 9.05589627 1.33333333 9.9837331 1.89469729 11.0643303 1.98591312 11.7732846 2.80651932 12.7728064 3.22719363 13.1934807 4.22671542 14.0140869 4.93566968 14.1053027 6.0162669 14.6666667 6.94410373 14.4194952 8 14.6666667 9.05589627 14.1053027 9.9837331 14.0140869 11.0643303 13.1934807 11.7732846 12.7728064 12.7728064 11.7732846 13.1934807 11.0643303 14.0140869 9.9837331 14.1053027 9.05589627 14.6666667"></poly..." Line: 552 Column: 49 - 902
"... <polygon id="Star-Copy" fill="#2E98FF" fill-rule="evenodd" points="8 14.4194952 6.94410373 14.6666667 6.0162669 14.1053027 4.93566968 14.0140869 4.22671542 13.1934807 3.22719363 12.7728064 2.80651932 11.7732846 1.98591312 11.0643303 1.89469729 9.9837331 1.33333333 9.05589627 1.58050484 8 1.33333333 6.94410373 1.89469729 6.0162669 1.98591312 4.93566968 2.80651932 4.22671542 3.22719363 3.22719363 4.22671542 2.80651932 4.93566968 1.98591312 6.0162669 1.89469729 6.94410373 1.33333333 8 1.58050484 9.05589627 1.33333333 9.9837331 1.89469729 11.0643303 1.98591312 11.7732846 2.80651932 12.7728064 3.22719363 13.1934807 4.22671542 14.0140869 4.93566968 14.1053027 6.0162669 14.6666667 6.94410373 14.4194952 8 14.6666667 9.05589627 14.1053027 9.9837331 14.0140869 11.0643303 13.1934807 11.7732846 12.7728064 12.7728064 11.7732846 13.1934807 11.0643303 14.0140869 9.9837331 14.1053027 9.05589627 14.6666667"></poly..." Line: 552 Column: 49 - 902
"... <polygon id="Star-Copy" fill="#2E98FF" fill-rule="evenodd" points="8 14.4194952 6.94410373 14.6666667 6.0162669 14.1053027 4.93566968 14.0140869 4.22671542 13.1934807 3.22719363 12.7728064 2.80651932 11.7732846 1.98591312 11.0643303 1.89469729 9.9837331 1.33333333 9.05589627 1.58050484 8 1.33333333 6.94410373 1.89469729 6.0162669 1.98591312 4.93566968 2.80651932 4.22671542 3.22719363 3.22719363 4.22671542 2.80651932 4.93566968 1.98591312 6.0162669 1.89469729 6.94410373 1.33333333 8 1.58050484 9.05589627 1.33333333 9.9837331 1.89469729 11.0643303 1.98591312 11.7732846 2.80651932 12.7728064 3.22719363 13.1934807 4.22671542 14.0140869 4.93566968 14.1053027 6.0162669 14.6666667 6.94410373 14.4194952 8 14.6666667 9.05589627 14.1053027 9.9837331 14.0140869 11.0643303 13.1934807 11.7732846 12.7728064 12.7728064 11.7732846 13.1934807 11.0643303 14.0140869 9.9837331 14.1053027 9.05589627 14.6666667"></poly..." Line: 552 Column: 49 - 902
"... <polygon id="Star-Copy" fill="#2E98FF" fill-rule="evenodd" points="8 14.4194952 6.94410373 14.6666667 6.0162669 14.1053027 4.93566968 14.0140869 4.22671542 13.1934807 3.22719363 12.7728064 2.80651932 11.7732846 1.98591312 11.0643303 1.89469729 9.9837331 1.33333333 9.05589627 1.58050484 8 1.33333333 6.94410373 1.89469729 6.0162669 1.98591312 4.93566968 2.80651932 4.22671542 3.22719363 3.22719363 4.22671542 2.80651932 4.93566968 1.98591312 6.0162669 1.89469729 6.94410373 1.33333333 8 1.58050484 9.05589627 1.33333333 9.9837331 1.89469729 11.0643303 1.98591312 11.7732846 2.80651932 12.7728064 3.22719363 13.1934807 4.22671542 14.0140869 4.93566968 14.1053027 6.0162669 14.6666667 6.94410373 14.4194952 8 14.6666667 9.05589627 14.1053027 9.9837331 14.0140869 11.0643303 13.1934807 11.7732846 12.7728064 12.7728064 11.7732846 13.1934807 11.0643303 14.0140869 9.9837331 14.1053027 9.05589627 14.6666667"></poly..." Line: 552 Column: 49 - 902
"... <polygon id="Star-Copy" fill="#2E98FF" fill-rule="evenodd" points="8 14.4194952 6.94410373 14.6666667 6.0162669 14.1053027 4.93566968 14.0140869 4.22671542 13.1934807 3.22719363 12.7728064 2.80651932 11.7732846 1.98591312 11.0643303 1.89469729 9.9837331 1.33333333 9.05589627 1.58050484 8 1.33333333 6.94410373 1.89469729 6.0162669 1.98591312 4.93566968 2.80651932 4.22671542 3.22719363 3.22719363 4.22671542 2.80651932 4.93566968 1.98591312 6.0162669 1.89469729 6.94410373 1.33333333 8 1.58050484 9.05589627 1.33333333 9.9837331 1.89469729 11.0643303 1.98591312 11.7732846 2.80651932 12.7728064 3.22719363 13.1934807 4.22671542 14.0140869 4.93566968 14.1053027 6.0162669 14.6666667 6.94410373 14.4194952 8 14.6666667 9.05589627 14.1053027 9.9837331 14.0140869 11.0643303 13.1934807 11.7732846 12.7728064 12.7728064 11.7732846 13.1934807 11.0643303 14.0140869 9.9837331 14.1053027 9.05589627 14.6666667"></poly..."

The first occurrence of ID “Oval-4” was here.

Line: 554 Column: 49 - 62
"... <circle id="Oval-4" fill="#FFFFFF" fill-rule="evenodd" cx="8" cy="8" r="5"></circ..." Line: 554 Column: 49 - 62
"... <circle id="Oval-4" fill="#FFFFFF" fill-rule="evenodd" cx="8" cy="8" r="5"></circ..." Line: 554 Column: 49 - 62
"... <circle id="Oval-4" fill="#FFFFFF" fill-rule="evenodd" cx="8" cy="8" r="5"></circ..." Line: 554 Column: 49 - 62
"... <circle id="Oval-4" fill="#FFFFFF" fill-rule="evenodd" cx="8" cy="8" r="5"></circ..." Line: 554 Column: 49 - 62
"... <circle id="Oval-4" fill="#FFFFFF" fill-rule="evenodd" cx="8" cy="8" r="5"></circ..."

The first occurrence of ID “Path-53” was here.

Line: 556 Column: 49 - 198
"... <polygon id="Path-53" fill="#2E98FF" fill-rule="nonzero" points="10.5843232 5.56002551 11.6842671 6.65996939 7.23407122 11.1101653 4.68662745 8.56272151 5.78657133 7.46277763 7.23407122 8.91027751"></poly..." Line: 556 Column: 49 - 198
"... <polygon id="Path-53" fill="#2E98FF" fill-rule="nonzero" points="10.5843232 5.56002551 11.6842671 6.65996939 7.23407122 11.1101653 4.68662745 8.56272151 5.78657133 7.46277763 7.23407122 8.91027751"></poly..." Line: 556 Column: 49 - 198
"... <polygon id="Path-53" fill="#2E98FF" fill-rule="nonzero" points="10.5843232 5.56002551 11.6842671 6.65996939 7.23407122 11.1101653 4.68662745 8.56272151 5.78657133 7.46277763 7.23407122 8.91027751"></poly..." Line: 556 Column: 49 - 198
"... <polygon id="Path-53" fill="#2E98FF" fill-rule="nonzero" points="10.5843232 5.56002551 11.6842671 6.65996939 7.23407122 11.1101653 4.68662745 8.56272151 5.78657133 7.46277763 7.23407122 8.91027751"></poly..." Line: 556 Column: 49 - 198
"... <polygon id="Path-53" fill="#2E98FF" fill-rule="nonzero" points="10.5843232 5.56002551 11.6842671 6.65996939 7.23407122 11.1101653 4.68662745 8.56272151 5.78657133 7.46277763 7.23407122 8.91027751"></poly..."

The “language” attribute on the “script” element is obsolete. You can safely omit it.

Line: 790 Column: 1 - 53
"...cript> <script language="javascript" type="text/javascript"> // Tr..."

Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.

Line: 2 Column: 16 - 6
"...TYPE html> <html> <head..."

Errors

No space between attributes.

Line: 8 Column: - 26
"...name="referrer"content="always..."

Attribute “ref” not allowed on element “link” at this point.

Line: 13 Column: 5 - 56
"...ript> <link ref="canonical" href="https://www.csdn.net/"> <..."

Element “link” is missing one or more of the following attributes: “itemprop”, “property”, “rel”.

Line: 13 Column: 5 - 56
"...ript> <link ref="canonical" href="https://www.csdn.net/"> <..."

Attribute “prod” not allowed on element “script” at this point.

Line: 22 Column: 5 - 183
"...www"> <script id="toolbar-tpl-scriptId" prod="download" skin="black" src="//csdnimg.cn/public/common/toolbar/js/content_toolbar.js" type="text/javascript" domain="http://blog.csdn.net"></scri..."

Attribute “skin” not allowed on element “script” at this point.

Line: 22 Column: 5 - 183
"...www"> <script id="toolbar-tpl-scriptId" prod="download" skin="black" src="//csdnimg.cn/public/common/toolbar/js/content_toolbar.js" type="text/javascript" domain="http://blog.csdn.net"></scri..."

Attribute “domain” not allowed on element “script” at this point.

Line: 22 Column: 5 - 183
"...www"> <script id="toolbar-tpl-scriptId" prod="download" skin="black" src="//csdnimg.cn/public/common/toolbar/js/content_toolbar.js" type="text/javascript" domain="http://blog.csdn.net"></scri..."

Bad value “760px” for attribute “width” on element “iframe”: Expected a digit but saw “p” instead.

Line: 111 Column: 73 - 299
"...pid="426"><iframe src="https://adaccount.csdn.net/#/preview/1470?m=AAbScpEiDSLUHtcUnAibtAApEmSLStHcipvUbSJmbLLHftbEnADXnHcJfAyLQbbHAQpWQyJofUAESQfbbnUpbintbXtHEbctADbQ&k=" frameborder="0" width= "760px" height= "90px" scrolling="no" ></ifram..."

Bad value “90px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.

Line: 111 Column: 73 - 299
"...pid="426"><iframe src="https://adaccount.csdn.net/#/preview/1470?m=AAbScpEiDSLUHtcUnAibtAApEmSLStHcipvUbSJmbLLHftbEnADXnHcJfAyLQbbHAQpWQyJofUAESQfbbnUpbintbXtHEbctADbQ&k=" frameborder="0" width= "760px" height= "90px" scrolling="no" ></ifram..." Line: 111 Column: 564 - 790
"...="427"><iframe src="https://adaccount.csdn.net/#/preview/1271?m=tAbAcmJJtJJbJLfEHtiAiADvpQHcAytJAJipcbXtLHAfSSiLLJDnyHcbDAyciAAtHQiWiQbfJDXpvAtDJmXpLfAHptniiEcpASoQ&k=" frameborder="0" width= "300px" height= "90px" scrolling="no" ></iframe><..."

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

Line: 111 Column: 73 - 299
"...pid="426"><iframe src="https://adaccount.csdn.net/#/preview/1470?m=AAbScpEiDSLUHtcUnAibtAApEmSLStHcipvUbSJmbLLHftbEnADXnHcJfAyLQbbHAQpWQyJofUAESQfbbnUpbintbXtHEbctADbQ&k=" frameborder="0" width= "760px" height= "90px" scrolling="no" ></ifram..." Line: 111 Column: 564 - 790
"...="427"><iframe src="https://adaccount.csdn.net/#/preview/1271?m=tAbAcmJJtJJbJLfEHtiAiADvpQHcAytJAJipcbXtLHAfSSiLLJDnyHcbDAyciAAtHQiWiQbfJDXpvAtDJmXpLfAHptniiEcpASoQ&k=" frameborder="0" width= "300px" height= "90px" scrolling="no" ></iframe><..." Line: 282 Column: 88 - 271
"...pid="428"><iframe class="J_adv" data-swapimg="true" src="https://kunpeng-sc.csdnimg.cn/#/preview/1015?positionId=428&queryWord=" frameborder="0" width= "300px" height= "200px" scrolling="no" ></ifram..." Line: 282 Column: 506 - 689
"...0"><iframe class="J_adv" data-swapimg="true" src="https://kunpeng-sc.csdnimg.cn/#/preview/1721?positionId=430&queryWord=" frameborder="0" width= "300px" height= "200px" scrolling="no" ></iframe><img ..." Line: 282 Column: 924 - 1107
"...ame class="J_adv" data-swapimg="true" src="https://kunpeng-sc.csdnimg.cn/#/preview/1766?positionId=433&queryWord=" frameborder="0" width= "300px" height= "200px" scrolling="no" ></iframe><img class="..." Line: 433 Column: 45 - 272
"...pid="434"><iframe src="https://adaccount.csdn.net/#/preview/1506?m=pitcAbvEnUbtbHctLtbnoiDbJEnHLcbDAiUmEHLJLfStnnEiUpfbHAtcvAEAQXStHnQWbQQASQLynycvibSpboytAStHEcttbtiQ&k=" frameborder="0" width= "300px" height= "250px" scrolling="no" ></ifram..."

The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.

Line: 111 Column: 73 - 299
"...pid="426"><iframe src="https://adaccount.csdn.net/#/preview/1470?m=AAbScpEiDSLUHtcUnAibtAApEmSLStHcipvUbSJmbLLHftbEnADXnHcJfAyLQbbHAQpWQyJofUAESQfbbnUpbintbXtHEbctADbQ&k=" frameborder="0" width= "760px" height= "90px" scrolling="no" ></ifram..." Line: 111 Column: 564 - 790
"...="427"><iframe src="https://adaccount.csdn.net/#/preview/1271?m=tAbAcmJJtJJbJLfEHtiAiADvpQHcAytJAJipcbXtLHAfSSiLLJDnyHcbDAyciAAtHQiWiQbfJDXpvAtDJmXpLfAHptniiEcpASoQ&k=" frameborder="0" width= "300px" height= "90px" scrolling="no" ></iframe><..." Line: 282 Column: 88 - 271
"...pid="428"><iframe class="J_adv" data-swapimg="true" src="https://kunpeng-sc.csdnimg.cn/#/preview/1015?positionId=428&queryWord=" frameborder="0" width= "300px" height= "200px" scrolling="no" ></ifram..." Line: 282 Column: 506 - 689
"...0"><iframe class="J_adv" data-swapimg="true" src="https://kunpeng-sc.csdnimg.cn/#/preview/1721?positionId=430&queryWord=" frameborder="0" width= "300px" height= "200px" scrolling="no" ></iframe><img ..." Line: 282 Column: 924 - 1107
"...ame class="J_adv" data-swapimg="true" src="https://kunpeng-sc.csdnimg.cn/#/preview/1766?positionId=433&queryWord=" frameborder="0" width= "300px" height= "200px" scrolling="no" ></iframe><img class="..." Line: 433 Column: 45 - 272
"...pid="434"><iframe src="https://adaccount.csdn.net/#/preview/1506?m=pitcAbvEnUbtbHctLtbnoiDbJEnHLcbDAiUmEHLJLfStnnEiUpfbHAtcvAEAQXStHnQWbQQASQLynycvibSpboytAStHEcttbtiQ&k=" frameborder="0" width= "300px" height= "250px" scrolling="no" ></ifram..."

Element “img” is missing required attribute “src”.

Line: 111 Column: 309 - 486
"...</iframe><img class="pre-img-lasy" data-src="https://kunyu.csdn.net/1.png?d=2&k=&m=AAbScpEiDSLUHtcUnAibtAApEmSLStHcipvUbSJmbLLHftbEnADXnHcJfAyLQbbHAQpWQyJofUAESQfbbnUpbintbXtHEbctADbQ"></div></d..." Line: 111 Column: 800 - 977
"...frame><img class="pre-img-lasy" data-src="https://kunyu.csdn.net/1.png?d=2&k=&m=tAbAcmJJtJJbJLfEHtiAiADvpQHcAytJAJipcbXtLHAfSSiLLJDnyHcbDAyciAAtHQiWiQbfJDXpvAtDJmXpLfAHptniiEcpASoQ"></div></div>..." Line: 282 Column: 281 - 418
"...</iframe><img class="pre-img-lasy" data-src="https://kunyu.csdn.net/1.png?p=428&a=1037&c=1015&k=&d=1&t=3&u=60a5a1d78ad846e58d7e1cf3dadf85be"></div></div><..." Line: 282 Column: 699 - 836
"...e><img class="pre-img-lasy" data-src="https://kunyu.csdn.net/1.png?p=430&a=2593&c=1721&k=&d=1&t=3&u=9048ef337b3d4eb3a01cf9364f3892f0"></div></div><div ads..." Line: 282 Column: 1117 - 1254
"...class="pre-img-lasy" data-src="https://kunyu.csdn.net/1.png?p=433&a=2642&c=1766&k=&d=1&t=3&u=309c54ae6d174b30b4f5bb93ed0f50b8"></div></div> </div> ..." Line: 433 Column: 282 - 459
"...</iframe><img class="pre-img-lasy" data-src="https://kunyu.csdn.net/1.png?d=2&k=&m=pitcAbvEnUbtbHctLtbnoiDbJEnHLcbDAiUmEHLJLfStnnEiUpfbHAtcvAEAQXStHnQWbQQASQLynycvibSpboytAStHEcttbtiQ"></div> ..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 111 Column: 309 - 486
"...</iframe><img class="pre-img-lasy" data-src="https://kunyu.csdn.net/1.png?d=2&k=&m=AAbScpEiDSLUHtcUnAibtAApEmSLStHcipvUbSJmbLLHftbEnADXnHcJfAyLQbbHAQpWQyJofUAESQfbbnUpbintbXtHEbctADbQ"></div></d..." Line: 111 Column: 800 - 977
"...frame><img class="pre-img-lasy" data-src="https://kunyu.csdn.net/1.png?d=2&k=&m=tAbAcmJJtJJbJLfEHtiAiADvpQHcAytJAJipcbXtLHAfSSiLLJDnyHcbDAyciAAtHQiWiQbfJDXpvAtDJmXpLfAHptniiEcpASoQ"></div></div>..." Line: 130 Column: 5 - 85
"...ank"> <img src="https://csdnimg.cn/feed/20200810/dc3a8e84afde827822328b9a7a5597e8.jpg"> </..." Line: 143 Column: 5 - 85
"...ank"> <img src="https://csdnimg.cn/feed/20200810/e7e0deef84cefa25fd4ae727c65643a3.jpg"> </..." Line: 156 Column: 5 - 85
"...ank"> <img src="https://csdnimg.cn/feed/20200810/4f0038048490bd4dd4fa1571a7c426f2.jpg"> </..." Line: 169 Column: 5 - 85
"...ank"> <img src="https://csdnimg.cn/feed/20200810/d8d33ab4bc530f3dce103d5cec613eb7.jpg"> </..." Line: 182 Column: 5 - 85
"...ank"> <img src="https://csdnimg.cn/feed/20200810/10a14a8e3ce75ba80618443167585fe4.jpg"> </..." Line: 214 Column: 18 - 99
"... <img src="https://csdnimg.cn/feed/20200810/0a361dc4e10292f5cd324b098b79c2f4.jpg"/> ..." Line: 227 Column: 18 - 99
"... <img src="https://csdnimg.cn/feed/20200804/a290c36c0ee414dabf36ded49ae4ced6.jpg"/> ..." Line: 282 Column: 281 - 418
"...</iframe><img class="pre-img-lasy" data-src="https://kunyu.csdn.net/1.png?p=428&a=1037&c=1015&k=&d=1&t=3&u=60a5a1d78ad846e58d7e1cf3dadf85be"></div></div><..." Line: 282 Column: 699 - 836
"...e><img class="pre-img-lasy" data-src="https://kunyu.csdn.net/1.png?p=430&a=2593&c=1721&k=&d=1&t=3&u=9048ef337b3d4eb3a01cf9364f3892f0"></div></div><div ads..." Line: 282 Column: 1117 - 1254
"...class="pre-img-lasy" data-src="https://kunyu.csdn.net/1.png?p=433&a=2642&c=1766&k=&d=1&t=3&u=309c54ae6d174b30b4f5bb93ed0f50b8"></div></div> </div> ..." Line: 433 Column: 282 - 459
"...</iframe><img class="pre-img-lasy" data-src="https://kunyu.csdn.net/1.png?d=2&k=&m=pitcAbvEnUbtbHctLtbnoiDbJEnHLcbDAiUmEHLJLfStnnEiUpfbHAtcvAEAQXStHnQWbQQASQLynycvibSpboytAStHEcttbtiQ"></div> ..."

Bad value “300px” for attribute “width” on element “iframe”: Expected a digit but saw “p” instead.

Line: 111 Column: 564 - 790
"...="427"><iframe src="https://adaccount.csdn.net/#/preview/1271?m=tAbAcmJJtJJbJLfEHtiAiADvpQHcAytJAJipcbXtLHAfSSiLLJDnyHcbDAyciAAtHQiWiQbfJDXpvAtDJmXpLfAHptniiEcpASoQ&k=" frameborder="0" width= "300px" height= "90px" scrolling="no" ></iframe><..." Line: 282 Column: 88 - 271
"...pid="428"><iframe class="J_adv" data-swapimg="true" src="https://kunpeng-sc.csdnimg.cn/#/preview/1015?positionId=428&queryWord=" frameborder="0" width= "300px" height= "200px" scrolling="no" ></ifram..." Line: 282 Column: 506 - 689
"...0"><iframe class="J_adv" data-swapimg="true" src="https://kunpeng-sc.csdnimg.cn/#/preview/1721?positionId=430&queryWord=" frameborder="0" width= "300px" height= "200px" scrolling="no" ></iframe><img ..." Line: 282 Column: 924 - 1107
"...ame class="J_adv" data-swapimg="true" src="https://kunpeng-sc.csdnimg.cn/#/preview/1766?positionId=433&queryWord=" frameborder="0" width= "300px" height= "200px" scrolling="no" ></iframe><img class="..." Line: 433 Column: 45 - 272
"...pid="434"><iframe src="https://adaccount.csdn.net/#/preview/1506?m=pitcAbvEnUbtbHctLtbnoiDbJEnHLcbDAiUmEHLJLfStnnEiUpfbHAtcvAEAQXStHnQWbQQASQLynycvibSpboytAStHEcttbtiQ&k=" frameborder="0" width= "300px" height= "250px" scrolling="no" ></ifram..."

Stray doctype.

Line: 114 Column: 9 - 23
"...> <!DOCTYPE html> <div..." Line: 277 Column: 9 - 23
"...> <!DOCTYPE html> <asid..."

Attribute “shown-offset” not allowed on element “ul” at this point.

Line: 262 Column: 1 - 79
"..."> </div> <ul class="feedlist_mod home" id="feedlist_id" shown-offset="1597090649424731"> ..."

Attribute “adsid” not allowed on element “div” at this point.

Line: 282 Column: 13 - 50
"... <div adsid="home08a" class="swapbox1"> <div ..." Line: 282 Column: 431 - 468
"...iv><div adsid="home08c" class="swapbox3"> <div id="kp_..." Line: 282 Column: 849 - 886
"... adsid="home08f" class="swapbox6"> <div id="kp_box_433..."

Bad value “200px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.

Line: 282 Column: 88 - 271
"...pid="428"><iframe class="J_adv" data-swapimg="true" src="https://kunpeng-sc.csdnimg.cn/#/preview/1015?positionId=428&queryWord=" frameborder="0" width= "300px" height= "200px" scrolling="no" ></ifram..." Line: 282 Column: 506 - 689
"...0"><iframe class="J_adv" data-swapimg="true" src="https://kunpeng-sc.csdnimg.cn/#/preview/1721?positionId=430&queryWord=" frameborder="0" width= "300px" height= "200px" scrolling="no" ></iframe><img ..." Line: 282 Column: 924 - 1107
"...ame class="J_adv" data-swapimg="true" src="https://kunpeng-sc.csdnimg.cn/#/preview/1766?positionId=433&queryWord=" frameborder="0" width= "300px" height= "200px" scrolling="no" ></iframe><img class="..."

Bad value “button” for attribute “type” on element “a”: Subtype missing.

Line: 414 Column: 17 - 132
"... <a type="button" class="btn btn-border-red btn-lg30" href="https://bss.csdn.net/m/pk/home?id=10603" target="_blank">投票参与</..."

Bad value “250px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.

Line: 433 Column: 45 - 272
"...pid="434"><iframe src="https://adaccount.csdn.net/#/preview/1506?m=pitcAbvEnUbtbHctLtbnoiDbJEnHLcbDAiUmEHLJLfStnnEiUpfbHAtcvAEAQXStHnQWbQQASQLynycvibSpboytAStHEcttbtiQ&k=" frameborder="0" width= "300px" height= "250px" scrolling="no" ></ifram..."

No “p” element in scope but a “p” end tag seen.

Line: 443 Column: 45 - 48
"...h">08月</p></p> ..." Line: 453 Column: 45 - 48
"...h">08月</p></p> ..." Line: 463 Column: 45 - 48
"...h">08月</p></p> ..." Line: 473 Column: 45 - 48
"...h">08月</p></p> ..." Line: 483 Column: 45 - 48
"...h">08月</p></p> ..." Line: 493 Column: 45 - 48
"...h">09月</p></p> ..." Line: 503 Column: 45 - 48
"...h">09月</p></p> ..." Line: 513 Column: 45 - 48
"...h">09月</p></p> ..."

Attribute “username” not allowed on element “img” at this point.

Line: 541 Column: 86 - 60
"...="_blank"><img src="https://profile.csdnimg.cn/2/D/6/1_devcloud" alt="" username="devcloud"></a> ..." Line: 580 Column: 89 - 63
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csdn.net Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.

csdn.net TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.