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

Report Summary

  • 47

    Performance

    Renders faster than
    66% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

math.bnu.edu.cn

北京师范大学数学科学学院

Page Load Speed

55.2 sec in total

First Response

9.6 sec

Resources Loaded

45.4 sec

Page Rendered

207 ms

math.bnu.edu.cn screenshot

About Website

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

Visit math.bnu.edu.cn

Key Findings

We analyzed Math.bnu.edu.cn page load time and found that the first response time was 9.6 sec and then it took 45.6 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 10 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

math.bnu.edu.cn performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.5 s

96/100

10%

LCP (Largest Contentful Paint)

Value56.8 s

0/100

25%

SI (Speed Index)

Value10.1 s

9/100

10%

TBT (Total Blocking Time)

Value210 ms

88/100

30%

CLS (Cumulative Layout Shift)

Value0.916

3/100

15%

TTI (Time to Interactive)

Value3.6 s

92/100

10%

Network Requests Diagram

math.bnu.edu.cn

9562 ms

logo.png

20258 ms

jquery-1.4.js

20257 ms

jquery-latest.js

276 ms

jquery.cycle.all.min.js

19721 ms

Our browser made a total of 22 requests to load all elements on the main page. We found that 82% of them (18 requests) were addressed to the original Math.bnu.edu.cn, 5% (1 request) were made to Code.jquery.com and 5% (1 request) were made to I.tianqi.com. The less responsive or slowest element that took the longest time to load (20.3 sec) belongs to the original domain Math.bnu.edu.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 235.5 kB (61%)

Content Size

386.8 kB

After Optimization

151.3 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Math.bnu.edu.cn main page is 386.8 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 5% of websites need less resources to load. Images take 217.8 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 40.3 kB

  • Original 47.7 kB
  • After minification 29.2 kB
  • After compression 7.4 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 18.4 kB, which is 39% 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 40.3 kB or 84% of the original size.

Image Optimization

-52%

Potential reduce by 114.0 kB

  • Original 217.8 kB
  • After minification 103.9 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 Bnu needs image optimization as it can save up to 114.0 kB or 52% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-67%

Potential reduce by 81.3 kB

  • Original 121.3 kB
  • After minification 120.4 kB
  • After compression 40.0 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 81.3 kB or 67% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

11

After Optimization

11

  • AJAX
  • Images
  • JavaScript

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Math Bnu. According to our analytics all requests are already optimized.

Network Requests Diagram

math.bnu.edu.cn

math.bnu.edu.cn

9562 ms

logo.png

logo.png

20258 ms

jquery-1.4.js

jquery-1.4.js

20257 ms

jquery-latest.js

jquery-latest.js

276 ms

jquery.cycle.all.min.js

jquery.cycle.all.min.js

19721 ms

search2.png

search2.png

19799 ms

sxtb1.jpg

sxtb1.jpg

19580 ms

P1.jpg

P1.jpg

20193 ms

p2.jpg

p2.jpg

20194 ms

p3.jpg

p3.jpg

20195 ms

index.php

index.php

561 ms

Headback.jpg

Headback.jpg

15727 ms

muduob.png

muduob.png

11579 ms

input.png

input.png

9748 ms

jquery-1.8.2.min.js

jquery-1.8.2.min.js

1491 ms

leftr3.png

leftr3.png

19923 ms

centertitlebackr2.png

centertitlebackr2.png

19923 ms

centerback.png

centerback.png

5145 ms

time_back.png

time_back.png

8131 ms

bnyq.png

bnyq.png

18694 ms

rightr3.png

rightr3.png

14405 ms

b0.png

b0.png

123 ms

Accessibility Review

math.bnu.edu.cn accessibility score

61

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

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.bnu.edu.cn best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

math.bnu.edu.cn SEO score

71

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

    N/A

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Math.bnu.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) and no language is claimed in <html> or <meta> tags either. Our system also found out that Math.bnu.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.

Social Sharing Optimization

math.bnu.edu.cn

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