sjtu.edu.cn Website Information
Daily Unique Visits: 424,357
Daily Page Views: 3,394,856
Income Per Day: $3,395
Estimated Value: $3,666,600
This website is located in China and is using following IP address 202.120.2.119. See the complete list of popular websites hosted in China.
sjtu.edu.cn is registered under .CN top-level domain. Please check other sites in .CN zone.
Website sjtu.edu.cn is using the following name servers:
- dns.sjtu.edu.cn
- apple.sjtu.edu.cn
and is probably hosted by ERX-CERNET-BKB China Education and Research Network Center, CN. See the full list of other websites hosted by ERX-CERNET-BKB China Education and Research Network Center, CN.
The highest website sjtu.edu.cn position in Alexa rank database was 3387 and the lowest rank position was 3603. Current position of sjtu.edu.cn in Alexa rank database is 3591.
Desktop speed score of sjtu.edu.cn (59/100) is better than the results of 34.36% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of sjtu.edu.cn (100/100) is better than the results of 100% of other sites and means that the page is mobile-friendly.
Mobile speed score of sjtu.edu.cn (39/100) is better than the results of 17.83% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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sjtu.edu.cn Alexa Rank
The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.
sjtu.edu.cn whois
WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.
sjtu.edu.cn server information
Servers Location
sjtu.edu.cn desktop page speed rank
Last tested: 2019-12-02
sjtu.edu.cn Desktop Speed Test Quick Summary
priority - 21Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 207.7KiB (71% reduction).
Compressing https://jaccount.sjtu.edu.cn/jaccount/jalogin?sid=…S%2BTeNR3iIBIpsKOd0%3D could save 14.5KiB (74% reduction).
Compressing https://jaccount.sjtu.edu.cn/jaccount/css/login.css?v=20190909 could save 12.7KiB (76% reduction).
Compressing https://jaccount.sjtu.edu.cn/jaccount/js/mc.js could save 9KiB (76% reduction).
priority - 18Avoid landing page redirects
Your page has 3 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
https://sjtu.edu.cn/
https://mail.sjtu.edu.cn/jaccount/login.jsp
https://jaccount.sjtu.edu.cn/jaccount/jalogin?sid=…S%2BTeNR3iIBIpsKOd0%3D
priority - 14Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
Optimize CSS Delivery of the following:
priority - 12Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 112.8KiB (45% reduction).
Minifying https://jaccount.sjtu.edu.cn/jaccount/js/mc.js could save 5.7KiB (49% reduction).
priority - 5Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 47.7KiB (19% reduction).
Compressing https://jaccount.sjtu.edu.cn/jaccount/image/pic-j.png could save 14.4KiB (12% reduction).
Compressing https://jaccount.sjtu.edu.cn/jaccount/image/sjtu.png?v=20161228 could save 5.2KiB (13% reduction).
Compressing https://jaccount.sjtu.edu.cn/jaccount/image/ja-net.png could save 3.3KiB (27% reduction).
Compressing https://jaccount.sjtu.edu.cn/jaccount/captcha?uuid…f538cf&t=1575299721803 could save 332B (26% reduction).
priority - 3Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://jaccount.sjtu.edu.cn/jaccount/image/pic-j.png (expiration not specified)
https://jaccount.sjtu.edu.cn/jaccount/image/verify.gif (expiration not specified)
https://jaccount.sjtu.edu.cn/jaccount/js/jquery-1.7.1.js (expiration not specified)
https://jaccount.sjtu.edu.cn/jaccount/js/mc.js (expiration not specified)
https://www.google.com/recaptcha/api2/webworker.js…nbHAdFrusJCwoMVGTXoHoM (5 minutes)
https://www.recaptcha.net/recaptcha/api.js?onload=…render=onload&hl=en_US (5 minutes)
priority - 1Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 7.7KiB (40% reduction).
priority - 0Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 3.7KiB (23% reduction).
sjtu.edu.cn Desktop Resource Breakdown
| Total Resources | 25 |
| Number of Hosts | 7 |
| Static Resources | 11 |
| JavaScript Resources | 7 |
| CSS Resources | 2 |
sjtu.edu.cn mobile page speed rank
Last tested: 2019-12-02
sjtu.edu.cn Mobile Speed Test Quick Summary
priority - 67Avoid landing page redirects
Your page has 3 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
https://sjtu.edu.cn/
https://mail.sjtu.edu.cn/jaccount/login.jsp
https://jaccount.sjtu.edu.cn/jaccount/jalogin?sid=…FXzH90tg9mip0cF9OFg%3D
priority - 56Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
Optimize CSS Delivery of the following:
priority - 20Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 198.9KiB (71% reduction).
Compressing https://jaccount.sjtu.edu.cn/jaccount/jalogin?sid=…FXzH90tg9mip0cF9OFg%3D could save 14.6KiB (74% reduction).
Compressing https://jaccount.sjtu.edu.cn/jaccount/css/login.css?v=20190909 could save 12.7KiB (76% reduction).
priority - 11Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 107.1KiB (45% reduction).
priority - 9Reduce server response time
In our test, your server responded in 0.80 seconds.
priority - 5Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://jaccount.sjtu.edu.cn/jaccount/image/mobile_phone.png (expiration not specified)
https://jaccount.sjtu.edu.cn/jaccount/image/pic-j.png (expiration not specified)
https://jaccount.sjtu.edu.cn/jaccount/image/verify.gif (expiration not specified)
https://jaccount.sjtu.edu.cn/jaccount/js/jquery-1.7.1.js (expiration not specified)
https://www.google.com/recaptcha/api2/webworker.js…nbHAdFrusJCwoMVGTXoHoM (5 minutes)
https://www.recaptcha.net/recaptcha/api.js?onload=…render=onload&hl=en_US (5 minutes)
priority - 2Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 23.3KiB (13% reduction).
Compressing https://jaccount.sjtu.edu.cn/jaccount/image/sjtu.png?v=20161228 could save 5.2KiB (13% reduction).
Compressing https://jaccount.sjtu.edu.cn/jaccount/image/ja-net.png could save 3.3KiB (27% reduction).
Compressing https://jaccount.sjtu.edu.cn/jaccount/captcha?uuid…51a767&t=1575304706919 could save 316B (25% reduction).
priority - 1Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 7.7KiB (40% reduction).
priority - 0Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 3.7KiB (23% reduction).
sjtu.edu.cn Mobile Resource Breakdown
| Total Resources | 23 |
| Number of Hosts | 7 |
| Static Resources | 11 |
| JavaScript Resources | 6 |
| CSS Resources | 2 |
sjtu.edu.cn mobile page usability
Last tested: 2019-12-02
sjtu.edu.cn HTML validation
Warnings
Consider avoiding viewport values that prevent users from resizing documents.
"...8" /> <meta name="viewport" content="width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0"/> <..."
The “type” attribute is unnecessary for JavaScript resources.
"...ript> <script src="js/jquery-1.7.1.js" type="text/javascript"></scri..."
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
"... <img src="image/sjtu.png?v=20161228" border="0"/> ..." Line: 371 Column: 17 - 88
"... <img src="qrcode?uuid=a38e70e2-4b4b-4b76-b413-b984db154821" border="0"/> ..." Line: 540 Column: 58 - 96
"...u.edu.cn"><img src="image/ja-net.png" border="0"></a> ..."
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
"...TYPE html> <html> <head..."
Errors
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
"... <img src="image/sjtu.png?v=20161228" border="0"/> ..." Line: 371 Column: 17 - 88
"... <img src="qrcode?uuid=a38e70e2-4b4b-4b76-b413-b984db154821" border="0"/> ..." Line: 540 Column: 58 - 96
"...u.edu.cn"><img src="image/ja-net.png" border="0"></a> ..."
Bad value “” for attribute “src” on element “img”: Must be non-empty.
"... <img id="captcha-img" src="" alt="" onclick="refreshCaptcha()"> ..."
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sjtu.edu.cn Ping
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.
sjtu.edu.cn TRACEROUTE
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.