22.1 sec in total
2.6 sec
18.3 sec
1.2 sec
Click here to check amazing Zhicheng Koolearn content for China. Otherwise, check out these important facts you probably never knew about zhicheng.koolearn.com
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Visit zhicheng.koolearn.comWe analyzed Zhicheng.koolearn.com page load time and found that the first response time was 2.6 sec and then it took 19.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.
zhicheng.koolearn.com performance score
name
value
score
weighting
Value8.7 s
0/100
10%
Value30.7 s
0/100
25%
Value43.7 s
0/100
10%
Value1,750 ms
10/100
30%
Value0
100/100
15%
Value28.5 s
0/100
10%
2581 ms
552 ms
556 ms
565 ms
894 ms
Our browser made a total of 93 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Zhicheng.koolearn.com, 26% (24 requests) were made to Img.koolearn.com and 26% (24 requests) were made to Images.koolearn.com. The less responsive or slowest element that took the longest time to load (11.6 sec) relates to the external source File.koolearn.com.
Page size can be reduced by 545.1 kB (36%)
1.5 MB
960.4 kB
In fact, the total size of Zhicheng.koolearn.com main page is 1.5 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 40% of websites need less resources to load. Images take 910.2 kB which makes up the majority of the site volume.
Potential reduce by 176.4 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. 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 176.4 kB or 88% of the original size.
Potential reduce by 113.5 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, Zhicheng Koolearn needs image optimization as it can save up to 113.5 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 197.6 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 197.6 kB or 61% of the original size.
Potential reduce by 57.6 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. Zhicheng.koolearn.com needs all CSS files to be minified and compressed as it can save up to 57.6 kB or 78% of the original size.
Number of requests can be reduced by 34 (39%)
88
54
The browser has sent 88 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zhicheng Koolearn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
zhicheng.koolearn.com
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zhicheng.koolearn.com accessibility score
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<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
Image elements do not have [alt] attributes
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
zhicheng.koolearn.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
zhicheng.koolearn.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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
Document uses legible font sizes
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zhicheng.koolearn.com 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 Zhicheng.koolearn.com 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.
zhicheng.koolearn.com
Open Graph description is not detected on the main page of Zhicheng Koolearn. 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: