10 sec in total
743 ms
9 sec
238 ms
Welcome to yz.tsinghua.edu.cn homepage info - get ready to check Yz Tsinghua best content for China right away, or after learning these important things about yz.tsinghua.edu.cn
Visit yz.tsinghua.edu.cnWe analyzed Yz.tsinghua.edu.cn page load time and found that the first response time was 743 ms and then it took 9.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
yz.tsinghua.edu.cn performance score
name
value
score
weighting
Value2.1 s
82/100
10%
Value2.1 s
96/100
25%
Value32.7 s
0/100
10%
Value1,610 ms
12/100
30%
Value0.451
20/100
15%
Value20.0 s
2/100
10%
743 ms
1287 ms
514 ms
517 ms
1808 ms
Our browser made a total of 28 requests to load all elements on the main page. We found that 68% of them (19 requests) were addressed to the original Yz.tsinghua.edu.cn, 29% (8 requests) were made to Graduate.tsinghua.edu.cn and 4% (1 request) were made to Tsinghua.edu.cn. The less responsive or slowest element that took the longest time to load (6.9 sec) belongs to the original domain Yz.tsinghua.edu.cn.
Page size can be reduced by 507.5 kB (35%)
1.5 MB
963.5 kB
In fact, the total size of Yz.tsinghua.edu.cn main page is 1.5 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. 20% of websites need less resources to load. Images take 936.5 kB which makes up the majority of the site volume.
Potential reduce by 19.9 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 5.7 kB, which is 24% 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 19.9 kB or 85% of the original size.
Potential reduce by 60.1 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. Yz Tsinghua images are well optimized though.
Potential reduce by 415.1 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 415.1 kB or 84% of the original size.
Potential reduce by 12.4 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. Yz.tsinghua.edu.cn needs all CSS files to be minified and compressed as it can save up to 12.4 kB or 82% of the original size.
Number of requests can be reduced by 6 (22%)
27
21
The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Yz Tsinghua. 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.
yz.tsinghua.edu.cn
743 ms
jquery-1.7.2.min.js
1287 ms
jquery.superslide.js
514 ms
style_index.css
517 ms
002.jpg
1808 ms
001.jpg
770 ms
024.gif
511 ms
003.jpg
513 ms
bg_btnpre_index.png
513 ms
bg_btnnext_index.png
514 ms
png-24.png
767 ms
20160325094819919752008.jpg
5434 ms
20160325101151808371382.jpg
6915 ms
20160325100039981780640.jpg
4898 ms
20160325101439553696610.jpg
4366 ms
025.gif
1025 ms
mobile.gif
1281 ms
yjszsKsLoginNew.do
2725 ms
013.jpg
1502 ms
023.gif
1773 ms
prototype.js
534 ms
validation.js
522 ms
String2MD5.js
519 ms
page.js
521 ms
jquery-1.4.3.min.js
2299 ms
012.png
639 ms
015.jpg
258 ms
015.png
259 ms
yz.tsinghua.edu.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.
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
Form elements do not have associated labels
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.
yz.tsinghua.edu.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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
yz.tsinghua.edu.cn SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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 doesn't use legible font sizes
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Yz.tsinghua.edu.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 Yz.tsinghua.edu.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.
yz.tsinghua.edu.cn
Open Graph description is not detected on the main page of Yz Tsinghua. 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: