14.3 sec in total
1.2 sec
12.6 sec
523 ms
Welcome to english.ntsc.cas.cn homepage info - get ready to check English Ntsc Cas best content for China right away, or after learning these important things about english.ntsc.cas.cn
National Time Service Center (NTSC) of the Chinese Academy of Sciences (CAS), formerly known as Shaanxi Astronomical Observatory, is the only professional research institute of China which specializes...
Visit english.ntsc.cas.cnWe analyzed English.ntsc.cas.cn page load time and found that the first response time was 1.2 sec and then it took 13.1 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.ntsc.cas.cn performance score
name
value
score
weighting
Value1.4 s
98/100
10%
Value4.3 s
43/100
25%
Value9.2 s
13/100
10%
Value2,730 ms
3/100
30%
Value0.145
77/100
15%
Value5.1 s
76/100
10%
1204 ms
754 ms
1012 ms
768 ms
798 ms
Our browser made a total of 45 requests to load all elements on the main page. We found that 98% of them (44 requests) were addressed to the original English.ntsc.cas.cn, 2% (1 request) were made to Api.cas.cn. The less responsive or slowest element that took the longest time to load (11.6 sec) belongs to the original domain English.ntsc.cas.cn.
Page size can be reduced by 179.9 kB (11%)
1.6 MB
1.4 MB
In fact, the total size of English.ntsc.cas.cn main page is 1.6 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. 40% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.
Potential reduce by 26.7 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 8.7 kB, which is 27% 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 26.7 kB or 82% of the original size.
Potential reduce by 118.0 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 Ntsc Cas images are well optimized though.
Potential reduce by 8.1 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 8.1 kB or 11% of the original size.
Potential reduce by 27.1 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.ntsc.cas.cn needs all CSS files to be minified and compressed as it can save up to 27.1 kB or 39% of the original size.
Number of requests can be reduced by 13 (30%)
44
31
The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of English Ntsc 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 4 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
english.ntsc.cas.cn
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english.ntsc.cas.cn accessibility score
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
Buttons do not have an accessible name
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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.ntsc.cas.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
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
english.ntsc.cas.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
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
ZH
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise English.ntsc.cas.cn can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Chinese language. Our system also found out that English.ntsc.cas.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.ntsc.cas.cn
Open Graph description is not detected on the main page of English Ntsc 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: