Tools & Wizards About Us
emath.ac.cn screenshot

Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

emath.ac.cn

数学研发网 www.emath.ac.cn

Page Load Speed

3 sec in total

First Response

688 ms

Resources Loaded

2.2 sec

Page Rendered

110 ms

emath.ac.cn screenshot

About Website

Welcome to emath.ac.cn homepage info - get ready to check Emath best content for China right away, or after learning these important things about emath.ac.cn

学术性数学网站；知识与趣味相交融；提供原创数学工具软件。努力打造世界一流的快速大数算法库 HugeCalc ！

Visit emath.ac.cn

Key Findings

We analyzed Emath.ac.cn page load time and found that the first response time was 688 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

emath.ac.cn performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

96/100

10%

LCP (Largest Contentful Paint)

Value1.4 s

100/100

25%

SI (Speed Index)

Value3.0 s

94/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.4 s

100/100

10%

Network Requests Diagram

emath.ac.cn

688 ms

emath.ac.cn

876 ms

bg.gif

216 ms

logo_big.gif

644 ms

bbs.gif

642 ms

Our browser made a total of 8 requests to load all elements on the main page. We found that all of those requests were addressed to Emath.ac.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (876 ms) belongs to the original domain Emath.ac.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 4.8 kB (41%)

Content Size

11.7 kB

After Optimization

6.9 kB

  • HTML
  • Images

In fact, the total size of Emath.ac.cn main page is 11.7 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. HTML takes 8.0 kB which makes up the majority of the site volume.

HTML Optimization

-59%

Potential reduce by 4.8 kB

  • Original 8.0 kB
  • After minification 8.0 kB
  • After compression 3.3 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 4.8 kB or 59% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 3.6 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.

Requests Breakdown

We found no issues to fix!

Requests Now

6

After Optimization

6

  • Images

The browser has sent 6 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Emath. According to our analytics all requests are already optimized.

Network Requests Diagram

emath.ac.cn

emath.ac.cn

688 ms

emath.ac.cn

emath.ac.cn

876 ms

bg.gif

bg.gif

216 ms

logo_big.gif

logo_big.gif

644 ms

bbs.gif

bbs.gif

642 ms

emrd.gif

emrd.gif

644 ms

logo.gif

logo.gif

651 ms

ghs.png

ghs.png

651 ms

Accessibility Review

emath.ac.cn accessibility score

68

Accessibility Issues

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

Best Practices

emath.ac.cn best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

emath.ac.cn SEO score

67

Search Engine Optimization Advices

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

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 Emath.ac.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 Emath.ac.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

emath.ac.cn

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