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Report Summary

  • 0

    Performance

  • 0

    Accessibility

  • 0

    Best Practices

  • 0

    SEO

lectures.ecnu.edu.cn

主页讲座报告

Page Load Speed

38.8 sec in total

First Response

7.6 sec

Resources Loaded

31 sec

Page Rendered

133 ms

lectures.ecnu.edu.cn screenshot

About Website

Welcome to lectures.ecnu.edu.cn homepage info - get ready to check Lectures Ecnu best content for China right away, or after learning these important things about lectures.ecnu.edu.cn

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Key Findings

We analyzed Lectures.ecnu.edu.cn page load time and found that the first response time was 7.6 sec and then it took 31.1 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 was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

lectures.ecnu.edu.cn performance score

0

Network Requests Diagram

lectures.ecnu.edu.cn

7615 ms

system.css

897 ms

simplenews.css

11179 ms

jquery.min.js

19829 ms

lecture.css

2987 ms

Our browser made a total of 11 requests to load all elements on the main page. We found that all of those requests were addressed to Lectures.ecnu.edu.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (19.8 sec) belongs to the original domain Lectures.ecnu.edu.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 21.9 kB (76%)

Content Size

28.8 kB

After Optimization

6.9 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Lectures.ecnu.edu.cn main page is 28.8 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. CSS take 21.1 kB which makes up the majority of the site volume.

HTML Optimization

-68%

Potential reduce by 4.7 kB

  • Original 6.9 kB
  • After minification 6.2 kB
  • After compression 2.2 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 4.7 kB or 68% of the original size.

Image Optimization

-11%

Potential reduce by 87 B

  • Original 799 B
  • After minification 712 B

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, Lectures Ecnu needs image optimization as it can save up to 87 B or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-81%

Potential reduce by 17.1 kB

  • Original 21.1 kB
  • After minification 18.3 kB
  • After compression 4.0 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. Lectures.ecnu.edu.cn needs all CSS files to be minified and compressed as it can save up to 17.1 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (33%)

Requests Now

9

After Optimization

6

  • Images
  • CSS

The browser has sent 9 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lectures Ecnu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lectures.ecnu.edu.cn

lectures.ecnu.edu.cn

7615 ms

system.css

system.css

897 ms

simplenews.css

simplenews.css

11179 ms

jquery.min.js

jquery.min.js

19829 ms

lecture.css

lecture.css

2987 ms

system_editor.css

system_editor.css

8450 ms

head.gif

head.gif

730 ms

logo.gif

logo.gif

4007 ms

magnifier_24.png

magnifier_24.png

3652 ms

calendar_48.png

calendar_48.png

392 ms

icon_more_1.gif

icon_more_1.gif

790 ms

SEO Factors

lectures.ecnu.edu.cn SEO score

0

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

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

lectures.ecnu.edu.cn

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