12.1 sec in total
3.1 sec
8.7 sec
329 ms
Visit sciencenet.cn now to see the best up-to-date Sciencenet content for China and also check out these interesting facts you probably never knew about sciencenet.cn
科学网是由中国科学院、中国工程院和国家自然科学基金委员会主管,中国科学报社主办的综合性科学网站,主要为网民提供快捷权威的科学新闻报道、丰富实用的科学信息服务以及交流互动的网络平台,目标是建成最具影响力的全球华人科学社区。
Visit sciencenet.cnWe analyzed Sciencenet.cn page load time and found that the first response time was 3.1 sec and then it took 9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
sciencenet.cn performance score
name
value
score
weighting
Value1.2 s
99/100
10%
Value3.4 s
66/100
25%
Value9.1 s
14/100
10%
Value3,810 ms
1/100
30%
Value0.287
42/100
15%
Value7.1 s
52/100
10%
3071 ms
518 ms
4385 ms
4889 ms
5693 ms
Our browser made a total of 66 requests to load all elements on the main page. We found that 85% of them (56 requests) were addressed to the original Sciencenet.cn, 8% (5 requests) were made to News.sciencenet.cn and 5% (3 requests) were made to Bbs.sciencenet.cn. The less responsive or slowest element that took the longest time to load (6.1 sec) relates to the external source News.sciencenet.cn.
Page size can be reduced by 189.0 kB (18%)
1.1 MB
866.3 kB
In fact, the total size of Sciencenet.cn main page is 1.1 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. 25% of websites need less resources to load. Images take 959.6 kB which makes up the majority of the site volume.
Potential reduce by 74.8 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. This page needs HTML code to be minified as it can gain 13.5 kB, which is 15% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 74.8 kB or 84% of the original size.
Potential reduce by 109.4 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, Sciencenet needs image optimization as it can save up to 109.4 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 4.8 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. Sciencenet.cn needs all CSS files to be minified and compressed as it can save up to 4.8 kB or 75% of the original size.
Number of requests can be reduced by 5 (8%)
65
60
The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sciencenet. 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.
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sciencenet.cn 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.
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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
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
sciencenet.cn best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
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
Browser errors were logged to the console
sciencenet.cn SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sciencenet.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 Sciencenet.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.
sciencenet.cn
Open Graph description is not detected on the main page of Sciencenet. 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: