15.6 sec in total
5.5 sec
9.6 sec
520 ms
Welcome to english.cas.ac.cn homepage info - get ready to check English Cas best content for China right away, or after learning these important things about english.cas.ac.cn
Visit english.cas.ac.cnWe analyzed English.cas.ac.cn page load time and found that the first response time was 5.5 sec and then it took 10.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
english.cas.ac.cn performance score
name
value
score
weighting
Value1.9 s
87/100
10%
Value4.4 s
40/100
25%
Value21.7 s
0/100
10%
Value40 ms
100/100
30%
Value0.557
13/100
15%
Value2.1 s
99/100
10%
5512 ms
1446 ms
491 ms
2198 ms
1305 ms
Our browser made a total of 50 requests to load all elements on the main page. We found that 84% of them (42 requests) were addressed to the original English.cas.ac.cn, 6% (3 requests) were made to English.cas.cn and 4% (2 requests) were made to Ta.trs.cn. The less responsive or slowest element that took the longest time to load (5.5 sec) belongs to the original domain English.cas.ac.cn.
Page size can be reduced by 406.2 kB (31%)
1.3 MB
885.2 kB
In fact, the total size of English.cas.ac.cn main page is 1.3 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 30% of websites need less resources to load. Images take 853.5 kB which makes up the majority of the site volume.
Potential reduce by 27.4 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 27.4 kB or 76% of the original size.
Potential reduce by 43.2 kB
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. English Cas images are well optimized though.
Potential reduce by 293.9 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 293.9 kB or 84% of the original size.
Potential reduce by 41.7 kB
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. English.cas.ac.cn needs all CSS files to be minified and compressed as it can save up to 41.7 kB or 82% of the original size.
Number of requests can be reduced by 5 (10%)
48
43
The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of English Cas. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.
english.cas.ac.cn
5512 ms
css_2014en.css
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css_rili_2014en.css
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jquery-1.11.1.js
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yao_2014en.js
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js_2014en.js
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ta.js
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hm.js
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test_13781.xml
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hm.gif
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registerclicks.js
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english.cas.ac.cn accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Image elements do not have [alt] attributes
Links do not have a discernible name
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.
english.cas.ac.cn best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
english.cas.ac.cn SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
Tap targets are not sized appropriately
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise English.cas.ac.cn can be misinterpreted by Google and other search engines. Our service has detected that English 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 English.cas.ac.cn 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.
english.cas.ac.cn
Open Graph description is not detected on the main page of English Cas. 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: