6.1 sec in total
1.4 sec
4.6 sec
133 ms
Click here to check amazing Campus SJTU content for China. Otherwise, check out these important facts you probably never knew about campus.sjtu.edu.cn
Visit campus.sjtu.edu.cnWe analyzed Campus.sjtu.edu.cn page load time and found that the first response time was 1.4 sec and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
campus.sjtu.edu.cn performance score
name
value
score
weighting
Value9.3 s
0/100
10%
Value17.0 s
0/100
25%
Value16.4 s
0/100
10%
Value3,530 ms
1/100
30%
Value0.312
37/100
15%
Value17.0 s
5/100
10%
1404 ms
581 ms
857 ms
553 ms
1660 ms
Our browser made a total of 25 requests to load all elements on the main page. We found that all of those requests were addressed to Campus.sjtu.edu.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Campus.sjtu.edu.cn.
Page size can be reduced by 94.2 kB (61%)
153.6 kB
59.4 kB
In fact, the total size of Campus.sjtu.edu.cn main page is 153.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only 10% of websites need less resources to load. Images take 84.0 kB which makes up the majority of the site volume.
Potential reduce by 10.6 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 10.6 kB or 76% of the original size.
Potential reduce by 36.2 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. Obviously, Campus SJTU needs image optimization as it can save up to 36.2 kB or 43% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 37.9 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 37.9 kB or 85% of the original size.
Potential reduce by 9.4 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. Campus.sjtu.edu.cn needs all CSS files to be minified and compressed as it can save up to 9.4 kB or 84% of the original size.
Number of requests can be reduced by 7 (29%)
24
17
The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Campus SJTU. 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 from 4 to 1 for CSS and as a result speed up the page load time.
campus.sjtu.edu.cn
1404 ms
tdfont.css
581 ms
office_xp.css
857 ms
win.js
553 ms
jsdomenu.js
1660 ms
democonfig5.js
845 ms
menu.js
823 ms
mm_css_menu.js
829 ms
news.asp
353 ms
news.asp
603 ms
title.gif
1146 ms
aboutMenu.gif
283 ms
aboutMenu.css
311 ms
nimo.jpg
1115 ms
addr.jpg
861 ms
news.gif
283 ms
newsbg.gif
558 ms
snimo.gif
298 ms
tech.gif
551 ms
techbg.gif
1128 ms
bottom.gif
810 ms
classic.css
279 ms
office_xp_menu_left.png
278 ms
office_xp_arrow.png
279 ms
icon1.GIF
278 ms
campus.sjtu.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
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.
campus.sjtu.edu.cn best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
campus.sjtu.edu.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
N/A
ZH
GB2312
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Campus.sjtu.edu.cn can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Chinese. Our system also found out that Campus.sjtu.edu.cn main page’s claimed encoding is gb2312. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
campus.sjtu.edu.cn
Open Graph description is not detected on the main page of Campus SJTU. 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: