8.6 sec in total
1.4 sec
6.7 sec
400 ms
Visit zdyey.zju.edu.cn now to see the best up-to-date Zdyey Zju content for China and also check out these interesting facts you probably never knew about zdyey.zju.edu.cn
学校描述
Visit zdyey.zju.edu.cnWe analyzed Zdyey.zju.edu.cn page load time and found that the first response time was 1.4 sec and then it took 7.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
zdyey.zju.edu.cn performance score
name
value
score
weighting
Value2.8 s
56/100
10%
Value10.1 s
0/100
25%
Value9.0 s
14/100
10%
Value110 ms
98/100
30%
Value0.022
100/100
15%
Value3.2 s
94/100
10%
1446 ms
556 ms
832 ms
2770 ms
1109 ms
Our browser made a total of 37 requests to load all elements on the main page. We found that all of those requests were addressed to Zdyey.zju.edu.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (5 sec) belongs to the original domain Zdyey.zju.edu.cn.
Page size can be reduced by 201.7 kB (9%)
2.3 MB
2.1 MB
In fact, the total size of Zdyey.zju.edu.cn main page is 2.3 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. 25% of websites need less resources to load. Images take 2.2 MB which makes up the majority of the site volume.
Potential reduce by 37.7 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 10.6 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 37.7 kB or 85% of the original size.
Potential reduce by 133.5 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. Zdyey Zju images are well optimized though.
Potential reduce by 20.0 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 20.0 kB or 53% of the original size.
Potential reduce by 10.5 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. Zdyey.zju.edu.cn needs all CSS files to be minified and compressed as it can save up to 10.5 kB or 80% of the original size.
Number of requests can be reduced by 11 (31%)
36
25
The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zdyey 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.
zdyey.zju.edu.cn
1446 ms
css.css
556 ms
logo.jpg
832 ms
banner.png
2770 ms
20160229044409646.jpg
1109 ms
20160226045158295.jpg
1108 ms
20160226084203383.jpg
1652 ms
20160224031101830.jpg
2488 ms
qiehuan.js
1113 ms
liuyan.png
1666 ms
search.jpg
1392 ms
more.jpg
1666 ms
20150908093920939.jpg
4696 ms
20150620114513692.jpg
3055 ms
20150620114255632.jpg
3326 ms
20150620113736964.jpg
3609 ms
jquery.js
2776 ms
side.js
2785 ms
all.js
3329 ms
index.js
3341 ms
h-r.jpg
3581 ms
dhxian.jpg
3582 ms
s-title.png
3854 ms
icon-focusimg-btn-png24-20131225.png
3856 ms
pic01dh.jpg
3858 ms
const-t.png
4134 ms
picarrow.jpg
4135 ms
const-b.png
4407 ms
fenyuan.png
4409 ms
newsbtbg.jpg
4410 ms
newsarrow.jpg
4688 ms
wsbtbg.jpg
4688 ms
baojian01.jpg
4949 ms
bjarrow.jpg
4959 ms
zjuol.gif
4962 ms
jiaoyubtbg02.jpg
4154 ms
baojian02.jpg
4430 ms
zdyey.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.
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
zdyey.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
zdyey.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
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zdyey.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 Zdyey.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.
zdyey.zju.edu.cn
Open Graph description is not detected on the main page of Zdyey 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: