njtu.edu.cn Website Information
Daily Unique Visits: 26,499
Daily Page Views: 158,994
Income Per Day: $318
Estimated Value: $228,960
This website is located in China and is using following IP address 202.112.154.197. See the complete list of popular websites hosted in China.
njtu.edu.cn is registered under .CN top-level domain. Please check other sites in .CN zone.
Website njtu.edu.cn is using the following name servers:
- mars.njtu.edu.cn
- jupiter.njtu.edu.cn
- venus.njtu.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 njtu.edu.cn position in Alexa rank database was 51504 and the lowest rank position was 54482. Current position of njtu.edu.cn in Alexa rank database is 54124.
Desktop speed score of njtu.edu.cn (16/100) is better than the results of 2.91% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of njtu.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 njtu.edu.cn (40/100) is better than the results of 18.97% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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njtu.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.
njtu.edu.cn whois
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njtu.edu.cn server information
Servers Location
njtu.edu.cn desktop page speed rank
Last tested: 2019-12-12
Desktop Speed
Bad
16/100
njtu.edu.cn Desktop Speed Test Quick Summary
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priority - 18Leverage 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:
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priority - 16Enable compression
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priority - 2Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
https://www.bjtu.edu.cn/css/css2019/iconfont.css
priority - 2Minify HTML
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priority - 1Reduce server response time
In our test, your server responded in 0.28 seconds.
priority - 0Minify JavaScript
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priority - 0Minify CSS
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njtu.edu.cn Desktop Resource Breakdown
| Total Resources | 37 |
| Number of Hosts | 2 |
| Static Resources | 35 |
| JavaScript Resources | 3 |
| CSS Resources | 3 |
njtu.edu.cn mobile page speed rank
Last tested: 2019-12-11
Mobile Speed
Bad
40/100
njtu.edu.cn Mobile Speed Test Quick Summary
priority - 115Optimize images
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priority - 23Leverage 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://www.bjtu.edu.cn/css/css2019/iconfont.css (expiration not specified)
https://www.bjtu.edu.cn/css/css2019/index.css (expiration not specified)
https://www.bjtu.edu.cn/css/css2019/style.css (expiration not specified)
https://www.bjtu.edu.cn/images/2019-06/3f83a2e67ec244cd8af231db54eea9f1.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/2019-07/a1b668ca556b487ca022dfc230818545.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/2019-07/eb23f36be43c44329fb0978714a9ec31.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/2019-09/96373281df5a4126b8fdc0fbc88606b0.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/2019-09/98c5dd0555e743038e84d1022d2725e3.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/2019-10/86906bce2a104209859d4302c0548f5e.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/2019-11/3c0862a848f44b978ccfe13ff74f4f25.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/2019-11/a556bc8e22384b288636051031eb140f.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/2019-12/6ffb65dc8f4345d3b703ab21c0d3d0ee.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/content/2019-06/20190620095858731293.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/content/2019-06/20190620095912895301.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/content/2019-06/20190620095927573489.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/content/2019-06/20190620095947245525.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/content/2019-06/20190620100003007679.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/content/2019-06/20190620100018350706.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/content/2019-06/20190620100031760837.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/img2019/footer_bg.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/img2019/footer_logo.png (expiration not specified)
https://www.bjtu.edu.cn/images/img2019/logo_01.png (expiration not specified)
https://www.bjtu.edu.cn/images/img2019/mode03_lf.png (expiration not specified)
https://www.bjtu.edu.cn/images/img2019/mode03_rt.png (expiration not specified)
https://www.bjtu.edu.cn/images/img2019/mode_bg01.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/img2019/wx01.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/img2019/wx02.png (expiration not specified)
https://www.bjtu.edu.cn/js/js2019/jquery-1.12.0.min.js (expiration not specified)
https://www.bjtu.edu.cn/js/js2019/jquery.flexslider-min.js (expiration not specified)
https://www.bjtu.edu.cn/js/js2019/script.js (expiration not specified)
https://www.bjtu.edu.cn/css/css2019/index.css (expiration not specified)
https://www.bjtu.edu.cn/css/css2019/style.css (expiration not specified)
https://www.bjtu.edu.cn/images/2019-06/3f83a2e67ec244cd8af231db54eea9f1.jpg (expiration not specified)
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https://www.bjtu.edu.cn/images/content/2019-06/20190620100003007679.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/content/2019-06/20190620100018350706.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/content/2019-06/20190620100031760837.jpg (expiration not specified)
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https://www.bjtu.edu.cn/images/img2019/mode03_lf.png (expiration not specified)
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https://www.bjtu.edu.cn/images/img2019/wx01.jpg (expiration not specified)
https://www.bjtu.edu.cn/images/img2019/wx02.png (expiration not specified)
https://www.bjtu.edu.cn/js/js2019/jquery-1.12.0.min.js (expiration not specified)
https://www.bjtu.edu.cn/js/js2019/jquery.flexslider-min.js (expiration not specified)
https://www.bjtu.edu.cn/js/js2019/script.js (expiration not specified)
priority - 16Enable 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 154.5KiB (70% reduction).
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priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
https://www.bjtu.edu.cn/css/css2019/iconfont.css
priority - 2Minify 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 14.9KiB (32% reduction).
Minifying https://www.bjtu.edu.cn/ could save 14.9KiB (32% reduction).
priority - 1Reduce server response time
In our test, your server responded in 0.28 seconds.
priority - 0Minify 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 4.6KiB (43% reduction).
Minifying https://www.bjtu.edu.cn/js/js2019/script.js could save 4.6KiB (43% 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 4.3KiB (12% reduction).
Minifying https://www.bjtu.edu.cn/css/css2019/index.css could save 2.5KiB (12% reduction).
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njtu.edu.cn Mobile Resource Breakdown
| Total Resources | 32 |
| Number of Hosts | 2 |
| Static Resources | 30 |
| JavaScript Resources | 3 |
| CSS Resources | 3 |
njtu.edu.cn mobile page usability
Last tested: 2019-12-11
Mobile Usability
Good
100/100
njtu.edu.cn HTML validation
Warnings
The character encoding “gb2312” is not widely supported. Better interoperability may be achieved by using “UTF-8”.
Line: 4 Column: - 23
"......"
"......"
Using “gbk” instead of the declared encoding “gb2312”.
Line: 4 Column: - 23
"......"
"......"
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Line: 190 Column: 12 - 46
"... <section id="mbtn" class="mbtn pa"><img ..." Line: 189 Column: 9 - 33
"...> <section class="snav pa"> ..."
"... <section id="mbtn" class="mbtn pa"><img ..." Line: 189 Column: 9 - 33
"...> <section class="snav pa"> ..."
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Line: 329 Column: 1 - 24
"...nner开始--> <article class="banner"> <..." Line: 358 Column: 1 - 25
"...tent开始--> <article class="content"> <div..." Line: 609 Column: 1 - 28
"...ter开始--> <article class="fooer_wrap"> <div..."
"...nner开始--> <article class="banner"> <..." Line: 358 Column: 1 - 25
"...tent开始--> <article class="content"> <div..." Line: 609 Column: 1 - 28
"...ter开始--> <article class="fooer_wrap"> <div..."
The “type” attribute is unnecessary for JavaScript resources.
Line: 624 Column: 1 - 60
"...oter结束--> <script type="text/javascript" src="js/jquery-1.7.1.min.js"></scri..." Line: 626 Column: 1 - 50
"... 通用JS --> <script type="text/javascript" src="js/script.js"></scri..." Line: 627 Column: 1 - 65
"...</script> <script type="text/javascript" src="js/jquery.flexslider-min.js"></scri..." Line: 629 Column: 1 - 31
"...</script> <script type="text/javascript"> Nav('..."
"...oter结束--> <script type="text/javascript" src="js/jquery-1.7.1.min.js"></scri..." Line: 626 Column: 1 - 50
"... 通用JS --> <script type="text/javascript" src="js/script.js"></scri..." Line: 627 Column: 1 - 65
"...</script> <script type="text/javascript" src="js/jquery.flexslider-min.js"></scri..." Line: 629 Column: 1 - 31
"...</script> <script type="text/javascript"> Nav('..."
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
Line: 2 Column: 16 - 6
"...type html> <html> <head..."
"...type html> <html> <head..."
Errors
Legacy encoding “gbk” used. Documents must use UTF-8.
Line: Column: -
"......"
"......"
The only allowed value for the “charset” attribute for the “meta” element is “utf-8”.
Line: 4 Column: 1 - 23
"...l> <head> <meta charset="gb2312"> <meta..."
"...l> <head> <meta charset="gb2312"> <meta..."
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Line: 34 Column: 47 - 73
"...ndex.htm"><img src="images/logo.png"></a></..." Line: 40 Column: 21 - 63
"... <img src="images/sea_btn.png" id="btn_ser"> ..." Line: 190 Column: 47 - 77
"..."mbtn pa"><img src="images/btn01.jpg" /> </sec..." Line: 571 Column: 43 - 70
"...weixin01"><img src="images/wx01.jpg"/> ..." Line: 572 Column: 26 - 55
"...s="close"><img src="images/close.jpg" /></span..." Line: 574 Column: 43 - 70
"...weixin02"><img src="images/wx02.png"/> ..." Line: 575 Column: 26 - 55
"...s="close"><img src="images/close.jpg" /></span..." Line: 578 Column: 43 - 70
"...weixin03"><img src="images/wx03.png"/> ..." Line: 579 Column: 26 - 55
"...s="close"><img src="images/close.jpg" /></span..." Line: 612 Column: 34 - 68
"...ter_logo"><img src="images/footer_logo.png"/></div>..."
"...ndex.htm"><img src="images/logo.png"></a></..." Line: 40 Column: 21 - 63
"... <img src="images/sea_btn.png" id="btn_ser"> ..." Line: 190 Column: 47 - 77
"..."mbtn pa"><img src="images/btn01.jpg" /> </sec..." Line: 571 Column: 43 - 70
"...weixin01"><img src="images/wx01.jpg"/> ..." Line: 572 Column: 26 - 55
"...s="close"><img src="images/close.jpg" /></span..." Line: 574 Column: 43 - 70
"...weixin02"><img src="images/wx02.png"/> ..." Line: 575 Column: 26 - 55
"...s="close"><img src="images/close.jpg" /></span..." Line: 578 Column: 43 - 70
"...weixin03"><img src="images/wx03.png"/> ..." Line: 579 Column: 26 - 55
"...s="close"><img src="images/close.jpg" /></span..." Line: 612 Column: 34 - 68
"...ter_logo"><img src="images/footer_logo.png"/></div>..."
The element “input” must not appear as a descendant of the “a” element.
Line: 45 Column: 29 - 111
"... <input class="notxt" value="请输入关键字" name="query" type="text" id="keywords" onFocus="if(value==defaultValue){value='';}" onBlur="if(!value){value=defaultValue;}" onclick="if(this.value==''){this.value='';this.form.keywords.style.color='#444'}"> ..." Line: 46 Column: 29 - 89
"... <input class="notxt1" name="Submit" type="submit" value="" /> ..."
"... <input class="notxt" value="请输入关键字" name="query" type="text" id="keywords" onFocus="if(value==defaultValue){value='';}" onBlur="if(!value){value=defaultValue;}" onclick="if(this.value==''){this.value='';this.form.keywords.style.color='#444'}"> ..." Line: 46 Column: 29 - 89
"... <input class="notxt1" name="Submit" type="submit" value="" /> ..."
Element “dl” is missing a required child element.
Line: 57 Column: 39 - 42
"... <dd><a hre..." Line: 71 Column: 39 - 42
"... <dd><a hre..." Line: 82 Column: 39 - 42
"... <dd><a hre..." Line: 97 Column: 39 - 42
"... <dd><a hre..." Line: 111 Column: 39 - 42
"... <dd><a hre..." Line: 128 Column: 39 - 42
"... <dd><a hre..." Line: 138 Column: 39 - 42
"... <dd><a hre..." Line: 153 Column: 39 - 42
"... <dd><a hre..." Line: 174 Column: 39 - 42
"... <dd><a hre..." Line: 196 Column: 60 - 63
"... <dd><a hre..." Line: 210 Column: 60 - 63
"... <dd><a hre..." Line: 221 Column: 60 - 63
"... <dd><a hre..." Line: 236 Column: 60 - 63
"... <dd><a hre..." Line: 250 Column: 60 - 63
"... <dd><a hre..." Line: 267 Column: 60 - 63
"... <dd><a hre..." Line: 277 Column: 60 - 63
"... <dd><a hre..." Line: 292 Column: 60 - 63
"... <dd><a hre..." Line: 313 Column: 60 - 63
"... <dd><a hre..."
"... <dd><a hre..." Line: 71 Column: 39 - 42
"... <dd><a hre..." Line: 82 Column: 39 - 42
"... <dd><a hre..." Line: 97 Column: 39 - 42
"... <dd><a hre..." Line: 111 Column: 39 - 42
"... <dd><a hre..." Line: 128 Column: 39 - 42
"... <dd><a hre..." Line: 138 Column: 39 - 42
"... <dd><a hre..." Line: 153 Column: 39 - 42
"... <dd><a hre..." Line: 174 Column: 39 - 42
"... <dd><a hre..." Line: 196 Column: 60 - 63
"... <dd><a hre..." Line: 210 Column: 60 - 63
"... <dd><a hre..." Line: 221 Column: 60 - 63
"... <dd><a hre..." Line: 236 Column: 60 - 63
"... <dd><a hre..." Line: 250 Column: 60 - 63
"... <dd><a hre..." Line: 267 Column: 60 - 63
"... <dd><a hre..." Line: 277 Column: 60 - 63
"... <dd><a hre..." Line: 292 Column: 60 - 63
"... <dd><a hre..." Line: 313 Column: 60 - 63
"... <dd><a hre..."
Bad value “_blank;” for attribute “target” on element “a”: Reserved keyword “blank;” used.
Line: 577 Column: 47 - 2
"...le btn01"><a target="_blank;" href="http://app.bjtu.edu.cn ">@移动门户A..."
"...le btn01"><a target="_blank;" href="http://app.bjtu.edu.cn ">@移动门户A..."
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njtu.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.
njtu.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.