30.3 sec in total
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558 ms
Welcome to gre.koolearn.com homepage info - get ready to check Gre Koolearn best content for China right away, or after learning these important things about gre.koolearn.com
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Visit gre.koolearn.comWe analyzed Gre.koolearn.com page load time and found that the first response time was 2.9 sec and then it took 27.3 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.
gre.koolearn.com performance score
name
value
score
weighting
Value8.5 s
0/100
10%
Value10.8 s
0/100
25%
Value33.2 s
0/100
10%
Value370 ms
71/100
30%
Value0.173
69/100
15%
Value18.0 s
3/100
10%
2947 ms
486 ms
534 ms
2352 ms
623 ms
Our browser made a total of 88 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Gre.koolearn.com, 30% (26 requests) were made to Images.koolearn.com and 23% (20 requests) were made to Img.koolearn.com. The less responsive or slowest element that took the longest time to load (20.4 sec) relates to the external source M9109.looyu.com.
Page size can be reduced by 439.8 kB (34%)
1.3 MB
842.7 kB
In fact, the total size of Gre.koolearn.com main page is 1.3 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 803.8 kB which makes up the majority of the site volume.
Potential reduce by 85.9 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 85.9 kB or 82% of the original size.
Potential reduce by 98.9 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, Gre Koolearn needs image optimization as it can save up to 98.9 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 197.8 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 197.8 kB or 66% of the original size.
Potential reduce by 57.2 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. Gre.koolearn.com needs all CSS files to be minified and compressed as it can save up to 57.2 kB or 79% of the original size.
Number of requests can be reduced by 29 (35%)
83
54
The browser has sent 83 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Gre 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 22 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
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gre.koolearn.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<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
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.
gre.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
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
gre.koolearn.com SEO score
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
Tap targets are not sized appropriately
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Gre.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 Gre.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.
gre.koolearn.com
Open Graph description is not detected on the main page of Gre 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: