8.8 sec in total
771 ms
6 sec
2 sec
Visit osgchina.org now to see the best up-to-date Osg China content for China and also check out these interesting facts you probably never knew about osgchina.org
osg全称OpenSceneGraph,是一个以OpenGL为基础的开源三维渲染引擎,在osgEarth、粒子系统、图形渲染、三维可视化方面应用成熟。其开放了osg论坛、osg社区、osg教程、osg源代码、三维虚拟仿真工具等内容,欢迎学习。
Visit osgchina.orgWe analyzed Osgchina.org page load time and found that the first response time was 771 ms and then it took 8 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
osgchina.org performance score
name
value
score
weighting
Value2.7 s
59/100
10%
Value5.9 s
14/100
25%
Value7.8 s
23/100
10%
Value60 ms
100/100
30%
Value0
100/100
15%
Value5.1 s
75/100
10%
771 ms
240 ms
624 ms
421 ms
655 ms
Our browser made a total of 58 requests to load all elements on the main page. We found that 97% of them (56 requests) were addressed to the original Osgchina.org, 3% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (4.4 sec) belongs to the original domain Osgchina.org.
Page size can be reduced by 314.3 kB (13%)
2.4 MB
2.1 MB
In fact, the total size of Osgchina.org main page is 2.4 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. 60% of websites need less resources to load. Images take 2.2 MB which makes up the majority of the site volume.
Potential reduce by 39.0 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 9.6 kB, which is 20% 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 39.0 kB or 80% of the original size.
Potential reduce by 253.1 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, Osg China needs image optimization as it can save up to 253.1 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 10.4 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 10.4 kB or 12% of the original size.
Potential reduce by 11.7 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. Osgchina.org needs all CSS files to be minified and compressed as it can save up to 11.7 kB or 21% of the original size.
Number of requests can be reduced by 14 (25%)
57
43
The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Osg China. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
osgchina.org
771 ms
common.css
240 ms
bootstrap.min.css
624 ms
font-awesome.min.css
421 ms
jquery2.2.2.min.js
655 ms
main.js
428 ms
swiper.min.css
431 ms
animate.css
474 ms
wow.min.js
637 ms
modal.js
653 ms
script.js
699 ms
style.css
776 ms
mobile.css
832 ms
swiper.min.js
1119 ms
jquery.min.js
1078 ms
bootstrap.min.js
1075 ms
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osgchina.org 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.
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
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.
osgchina.org 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
Page has valid source maps
osgchina.org SEO score
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
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
ZH
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Osgchina.org can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that Osgchina.org 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.
osgchina.org
Open Graph description is not detected on the main page of Osg China. 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: