8.5 sec in total
1.2 sec
7.1 sec
254 ms
Click here to check amazing Zdzsc Zju content for China. Otherwise, check out these important facts you probably never knew about zdzsc.zju.edu.cn
Visit zdzsc.zju.edu.cnWe analyzed Zdzsc.zju.edu.cn page load time and found that the first response time was 1.2 sec and then it took 7.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
zdzsc.zju.edu.cn performance score
name
value
score
weighting
Value6.1 s
3/100
10%
Value14.6 s
0/100
25%
Value13.4 s
2/100
10%
Value3,380 ms
2/100
30%
Value0.07
96/100
15%
Value15.0 s
8/100
10%
1150 ms
825 ms
526 ms
1316 ms
1330 ms
Our browser made a total of 53 requests to load all elements on the main page. We found that 92% of them (49 requests) were addressed to the original Zdzsc.zju.edu.cn, 8% (4 requests) were made to News.zju.edu.cn. The less responsive or slowest element that took the longest time to load (4.6 sec) belongs to the original domain Zdzsc.zju.edu.cn.
Page size can be reduced by 360.3 kB (5%)
6.8 MB
6.4 MB
In fact, the total size of Zdzsc.zju.edu.cn main page is 6.8 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. 50% of websites need less resources to load. Images take 6.5 MB which makes up the majority of the site volume.
Potential reduce by 29.7 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 5.7 kB, which is 16% 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 29.7 kB or 84% of the original size.
Potential reduce by 144.7 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. Zdzsc Zju images are well optimized though.
Potential reduce by 169.9 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 169.9 kB or 66% of the original size.
Potential reduce by 16.0 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. Zdzsc.zju.edu.cn needs all CSS files to be minified and compressed as it can save up to 16.0 kB or 81% of the original size.
Number of requests can be reduced by 4 (8%)
51
47
The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zdzsc Zju. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.
zdzsc.zju.edu.cn
1150 ms
style.css
825 ms
16sucai_index.css
526 ms
jquery-1.9.1.min.js
1316 ms
jquery.js
1330 ms
thcic_menu.js
526 ms
jquery-1.4.2.min.js
1090 ms
jquery.taber.js
786 ms
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box1_bg.jpg
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ss_btn.jpg
264 ms
logo_1.jpg
527 ms
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tzy.jpg
3946 ms
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4024 ms
news_icon.jpg
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liantu.jpg
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top_zi_bg.jpg
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nav_line.png
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nav_jt.png
4220 ms
bg.gif
4557 ms
foc_btn.png
4035 ms
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2370 ms
zdzsc.zju.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.
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
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
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.
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.
zdzsc.zju.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
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
zdzsc.zju.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 uses 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 Zdzsc.zju.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 Zdzsc.zju.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.
zdzsc.zju.edu.cn
Open Graph description is not detected on the main page of Zdzsc Zju. 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: