20.2 sec in total
2.4 sec
17.2 sec
565 ms
Click here to check amazing W 3 School content. Otherwise, check out these important facts you probably never knew about w3school.cn
Visit w3school.cnWe analyzed W3school.cn page load time and found that the first response time was 2.4 sec and then it took 17.7 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.
w3school.cn performance score
2413 ms
2985 ms
936 ms
1858 ms
914 ms
Our browser made a total of 43 requests to load all elements on the main page. We found that 70% of them (30 requests) were addressed to the original W3school.cn, 14% (6 requests) were made to Bbs.xml.org.cn and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (9.8 sec) relates to the external source C.xml.org.cn.
Page size can be reduced by 138.1 kB (66%)
210.8 kB
72.7 kB
In fact, the total size of W3school.cn main page is 210.8 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. 15% of websites need less resources to load. HTML takes 150.7 kB which makes up the majority of the site volume.
Potential reduce by 130.5 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 130.5 kB or 87% of the original size.
Potential reduce by 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. W 3 School images are well optimized though.
Potential reduce by 3.5 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 3.5 kB or 16% of the original size.
Potential reduce by 606 B
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. W3school.cn needs all CSS files to be minified and compressed as it can save up to 606 B or 59% of the original size.
Number of requests can be reduced by 15 (38%)
39
24
The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of W 3 School. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.
w3school.cn
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index.asp
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newmenu.css
936 ms
newmenu.js
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add.gif
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a12.gif
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logo_aoyun2.jpg
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a1.gif
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navspacer.gif
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weibo.gif
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big5.gif
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xml.gif
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plus.gif
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lastpost.gif
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webservices.jpg
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logo_rdf.gif
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androidbook.jpg
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android.jpg
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androiddev.jpg
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tcs_logo.jpg
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algorithm.gif
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ga.js
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w3school.cn SEO score
N/A
N/A
GB2312
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise W3school.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 W3school.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.
w3school.cn
Open Graph description is not detected on the main page of W 3 School. 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: