9.3 sec in total
1.3 sec
6.9 sec
1.1 sec
Click here to check amazing Ia Cas content for China. Otherwise, check out these important facts you probably never knew about ia.cas.cn
中国科学院自动化研究所,中国科学院
Visit ia.cas.cnWe analyzed Ia.cas.cn page load time and found that the first response time was 1.3 sec and then it took 8 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
ia.cas.cn performance score
name
value
score
weighting
Value1.2 s
99/100
10%
Value6.5 s
9/100
25%
Value4.6 s
71/100
10%
Value0 ms
100/100
30%
Value0
100/100
15%
Value1.2 s
100/100
10%
1263 ms
501 ms
1020 ms
1040 ms
779 ms
Our browser made a total of 68 requests to load all elements on the main page. We found that 91% of them (62 requests) were addressed to the original Ia.cas.cn, 3% (2 requests) were made to Tracker2.cas.cn and 3% (2 requests) were made to Dcs.conac.cn. The less responsive or slowest element that took the longest time to load (4.6 sec) belongs to the original domain Ia.cas.cn.
Page size can be reduced by 418.9 kB (4%)
9.8 MB
9.4 MB
In fact, the total size of Ia.cas.cn main page is 9.8 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. 35% of websites need less resources to load. Images take 9.6 MB which makes up the majority of the site volume.
Potential reduce by 64.2 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 10.0 kB, which is 13% 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 64.2 kB or 84% of the original size.
Potential reduce by 229.5 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. Ia Cas images are well optimized though.
Potential reduce by 120.4 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 120.4 kB or 74% of the original size.
Potential reduce by 4.7 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. Ia.cas.cn needs all CSS files to be minified and compressed as it can save up to 4.7 kB or 80% of the original size.
Number of requests can be reduced by 16 (29%)
56
40
The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ia 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.
ia.cas.cn
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ia.cas.cn accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
Form elements do not have associated labels
Links do not have a discernible name
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
List items (<li>) are not contained within <ul> or <ol> parent elements.
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.
ia.cas.cn best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Browser errors were logged to the console
ia.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
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
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ia.cas.cn 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 Ia.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.
ia.cas.cn
Open Graph description is not detected on the main page of Ia 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: