Tools & Wizards About Us
math.seu.edu.cn screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    72% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

math.seu.edu.cn

数学学院

Page Load Speed

6.8 sec in total

First Response

2 sec

Resources Loaded

4.7 sec

Page Rendered

170 ms

math.seu.edu.cn screenshot

About Website

Visit math.seu.edu.cn now to see the best up-to-date Math Seu content for China and also check out these interesting facts you probably never knew about math.seu.edu.cn

东南大学

Visit math.seu.edu.cn

Key Findings

We analyzed Math.seu.edu.cn page load time and found that the first response time was 2 sec and then it took 4.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

math.seu.edu.cn performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

37/100

10%

LCP (Largest Contentful Paint)

Value7.8 s

3/100

25%

SI (Speed Index)

Value10.6 s

7/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.183

66/100

15%

TTI (Time to Interactive)

Value3.7 s

90/100

10%

Network Requests Diagram

math.seu.edu.cn

2002 ms

Index.css

787 ms

Tabs.css

527 ms

zh.js

1049 ms

Websys_Main_Title_bg.gif

265 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that all of those requests were addressed to Math.seu.edu.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Math.seu.edu.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 55.2 kB (63%)

Content Size

87.2 kB

After Optimization

32.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Math.seu.edu.cn main page is 87.2 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. HTML takes 42.8 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 37.3 kB

  • Original 42.8 kB
  • After minification 33.5 kB
  • After compression 5.5 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 9.3 kB, which is 22% 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 37.3 kB or 87% of the original size.

Image Optimization

-21%

Potential reduce by 5.6 kB

  • Original 26.2 kB
  • After minification 20.6 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, Math Seu needs image optimization as it can save up to 5.6 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-58%

Potential reduce by 5.7 kB

  • Original 9.8 kB
  • After minification 9.8 kB
  • After compression 4.2 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 5.7 kB or 58% of the original size.

CSS Optimization

-78%

Potential reduce by 6.5 kB

  • Original 8.4 kB
  • After minification 7.3 kB
  • After compression 1.9 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. Math.seu.edu.cn needs all CSS files to be minified and compressed as it can save up to 6.5 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 26 (48%)

Requests Now

54

After Optimization

28

  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Math Seu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

math.seu.edu.cn

math.seu.edu.cn

2002 ms

Index.css

Index.css

787 ms

Tabs.css

Tabs.css

527 ms

zh.js

zh.js

1049 ms

Websys_Main_Title_bg.gif

Websys_Main_Title_bg.gif

265 ms

Websys_Main_Title_Logo.gif

Websys_Main_Title_Logo.gif

264 ms

Websys_Main_Title_Name_01.gif

Websys_Main_Title_Name_01.gif

266 ms

Websys_Main_Title_Name_02.gif

Websys_Main_Title_Name_02.gif

266 ms

Websys_Main_Title_Name_03.gif

Websys_Main_Title_Name_03.gif

526 ms

Websys_Main_Title_Name_04.gif

Websys_Main_Title_Name_04.gif

528 ms

Websys_Main_Title_Arrow.gif

Websys_Main_Title_Arrow.gif

527 ms

Websys_Main_Title_Search.gif

Websys_Main_Title_Search.gif

527 ms

Websys_Main_Menu_Arrow_01.gif

Websys_Main_Menu_Arrow_01.gif

528 ms

Websys_Main_Menu_001.gif

Websys_Main_Menu_001.gif

1076 ms

Websys_Main_Menu_002.gif

Websys_Main_Menu_002.gif

786 ms

Websys_Main_Menu_003.gif

Websys_Main_Menu_003.gif

786 ms

Websys_Main_Menu_004.gif

Websys_Main_Menu_004.gif

788 ms

Websys_Main_Menu_005.gif

Websys_Main_Menu_005.gif

788 ms

Websys_Main_Menu_006.gif

Websys_Main_Menu_006.gif

788 ms

Websys_Main_Menu_007.gif

Websys_Main_Menu_007.gif

1047 ms

Websys_Main_Menu_008.gif

Websys_Main_Menu_008.gif

1048 ms

Websys_Main_Menu_009.gif

Websys_Main_Menu_009.gif

1049 ms

Websys_Main_Menu_010.gif

Websys_Main_Menu_010.gif

1050 ms

Websys_Main_Menu_011.gif

Websys_Main_Menu_011.gif

1050 ms

Websys_Main_Menu_Arrow_02.gif

Websys_Main_Menu_Arrow_02.gif

1309 ms

Main_Event_Photo_003.gif

Main_Event_Photo_003.gif

1308 ms

Main_Event_Photo_001.gif

Main_Event_Photo_001.gif

1309 ms

Main_Event_Photo_002.gif

Main_Event_Photo_002.gif

1310 ms

Main_Event_Photo_004.gif

Main_Event_Photo_004.gif

1311 ms

Main_Event_Photo_005.gif

Main_Event_Photo_005.gif

1431 ms

Main_Event_Title_Arrow_01.gif

Main_Event_Title_Arrow_01.gif

1569 ms

Main_Event_Title_Arrow_02.gif

Main_Event_Title_Arrow_02.gif

1570 ms

Main_Event_Arrow.gif

Main_Event_Arrow.gif

1571 ms

Main_Event_Bottom.gif

Main_Event_Bottom.gif

1571 ms

Main_Center_Title_Arrow.gif

Main_Center_Title_Arrow.gif

1571 ms

Main_Center_Title_More.gif

Main_Center_Title_More.gif

1788 ms

Main_News_Icon.gif

Main_News_Icon.gif

1830 ms

Main_Center_Table_bottom.gif

Main_Center_Table_bottom.gif

1832 ms

Main_Teach_Title_Arrow.gif

Main_Teach_Title_Arrow.gif

1831 ms

Main_Right_Table_Bottom.gif

Main_Right_Table_Bottom.gif

1813 ms

CSNS_LOGO.jpg

CSNS_LOGO.jpg

1841 ms

Main_Links_Title_More.gif

Main_Links_Title_More.gif

1892 ms

Main_Links_Bottom_Line.gif

Main_Links_Bottom_Line.gif

1838 ms

Main_Event_Title_bg.gif

Main_Event_Title_bg.gif

1838 ms

Main_Event_bg_01.gif

Main_Event_bg_01.gif

1578 ms

Main_Event_bg_02.gif

Main_Event_bg_02.gif

1583 ms

Main_Event_bg_03.gif

Main_Event_bg_03.gif

1837 ms

Main_Event_Center_bg.gif

Main_Event_Center_bg.gif

1837 ms

Main_Table_Line_bg.gif

Main_Table_Line_bg.gif

1839 ms

Main_Center_Title_bg.gif

Main_Center_Title_bg.gif

1579 ms

Main_Center_Table_bg.gif

Main_Center_Table_bg.gif

1584 ms

Main_Right_Table_Menu.gif

Main_Right_Table_Menu.gif

1726 ms

Main_Right_table_bg.gif

Main_Right_table_bg.gif

1837 ms

Main_Right_Table_MenuB.gif

Main_Right_Table_MenuB.gif

1840 ms

Main_Links_Bottom_bg.gif

Main_Links_Bottom_bg.gif

1579 ms

Accessibility Review

math.seu.edu.cn accessibility score

70

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

High

<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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

math.seu.edu.cn best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

math.seu.edu.cn SEO score

82

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Math.seu.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 Math.seu.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.

Social Sharing Optimization

math.seu.edu.cn

Open Graph description is not detected on the main page of Math Seu. 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: