8.1 sec in total
534 ms
7.5 sec
112 ms
Visit mail.21cn.com now to see the best up-to-date Mail 21 Cn content for China and also check out these interesting facts you probably never knew about mail.21cn.com
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Visit mail.21cn.comWe analyzed Mail.21cn.com page load time and found that the first response time was 534 ms and then it took 7.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
mail.21cn.com performance score
534 ms
872 ms
237 ms
1253 ms
237 ms
Our browser made a total of 23 requests to load all elements on the main page. We found that 61% of them (14 requests) were addressed to the original Mail.21cn.com, 30% (7 requests) were made to Static.e.189.cn and 4% (1 request) were made to Ux.21cn.com. The less responsive or slowest element that took the longest time to load (2.3 sec) relates to the external source Static.e.189.cn.
Page size can be reduced by 146.2 kB (65%)
223.9 kB
77.7 kB
In fact, the total size of Mail.21cn.com main page is 223.9 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 20% of websites need less resources to load. Javascripts take 201.9 kB which makes up the majority of the site volume.
Potential reduce by 6.0 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 983 B, which is 11% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 6.0 kB or 65% of the original size.
Potential reduce by 27 B
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Mail 21 Cn images are well optimized though.
Potential reduce by 139.9 kB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 139.9 kB or 69% of the original size.
Potential reduce by 184 B
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Mail.21cn.com has all CSS files already compressed.
Number of requests can be reduced by 6 (30%)
20
14
The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mail 21 Cn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.
mail.21cn.com
534 ms
mail.21cn.com
872 ms
237 ms
getJs.js
1253 ms
login.css
237 ms
common.js
472 ms
jquery.fix.xss.js
1505 ms
jquery.js
1118 ms
redirectToWap.js
698 ms
getAllDynamicConfig.do
406 ms
logo_2016.gif
449 ms
banner.jpg
1268 ms
gonggao-ico.gif
631 ms
login_bg.png
674 ms
dxlogo.gif
854 ms
unifyAccountLogin.do
1400 ms
loginBox.css
1284 ms
jquery-1.11.3.min.js
1823 ms
platformlogin.js
2262 ms
logo.png
754 ms
icon-success.png
783 ms
iconAlert.png
258 ms
loading.gif
246 ms
mail.21cn.com accessibility score
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
mail.21cn.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
mail.21cn.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Mail.21cn.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Mail.21cn.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
mail.21cn.com
Open Graph description is not detected on the main page of Mail 21 Cn. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: