44.1 sec in total
7.7 sec
35.1 sec
1.3 sec
Visit en.cleanairchina.org now to see the best up-to-date En Clean Air China content and also check out these interesting facts you probably never knew about en.cleanairchina.org
Visit en.cleanairchina.orgWe analyzed En.cleanairchina.org page load time and found that the first response time was 7.7 sec and then it took 36.4 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 were 5 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
en.cleanairchina.org performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value25.0 s
0/100
25%
Value15.9 s
0/100
10%
Value3,860 ms
1/100
30%
Value1.125
1/100
15%
Value16.7 s
5/100
10%
7699 ms
665 ms
686 ms
683 ms
2736 ms
Our browser made a total of 100 requests to load all elements on the main page. We found that 81% of them (81 requests) were addressed to the original En.cleanairchina.org, 13% (13 requests) were made to Api.map.baidu.com and 2% (2 requests) were made to Songhaoyun.com. The less responsive or slowest element that took the longest time to load (20.3 sec) belongs to the original domain En.cleanairchina.org.
Page size can be reduced by 1.4 MB (31%)
4.6 MB
3.2 MB
In fact, the total size of En.cleanairchina.org main page is 4.6 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 3.3 MB which makes up the majority of the site volume.
Potential reduce by 955.6 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 955.6 kB or 72% of the original size.
Potential reduce by 441.9 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, En Clean Air China needs image optimization as it can save up to 441.9 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 10.7 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 10.7 kB or 68% of the original size.
Number of requests can be reduced by 22 (24%)
93
71
The browser has sent 93 CSS, Javascripts, AJAX and image requests in order to completely render the main page of En Clean Air 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 14 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
en.cleanairchina.org
7699 ms
api
665 ms
TextIconOverlay_min.js
686 ms
MarkerClusterer_min.js
683 ms
p1.css
2736 ms
box.css
658 ms
c1.css
1818 ms
jquery.js
2516 ms
tipswindown.css
663 ms
tipswindown.js
956 ms
getscript
1542 ms
raphael.js
941 ms
slides.js
302 ms
statis.js
4673 ms
blank.gif
313 ms
bodybj.jpg
1734 ms
10130_3zhan.png
321 ms
10131_3zhan.png
321 ms
10168_3zhan.png
323 ms
10169_3zhan.png
319 ms
10170_3zhan.png
331 ms
zw.gif
617 ms
10610_1site.png
971 ms
10662_3zhan.png
7420 ms
10658_3zhan.jpg
13915 ms
10640_3zhan.jpg
19664 ms
10625_3zhan.jpg
3947 ms
10535_3zhan.jpg
19664 ms
10463_3zhan.jpg
2350 ms
10464_3zhan.jpg
3162 ms
1432pro_x.jpg
3938 ms
1419pro_x.jpg
3949 ms
1413pro_x.jpg
4061 ms
1401pro_x.png
4308 ms
1368pro.jpg
7536 ms
1332pro.jpg
12035 ms
1285pro.jpg
8509 ms
1235pro.jpg
19661 ms
1138pro.png
11119 ms
1134pro.png
12117 ms
10171_3zhan.jpg
12917 ms
10172_3zhan.jpg
12643 ms
10173_3zhan.jpg
13108 ms
10174_3zhan.jpg
13456 ms
10176_3zhan.jpg
13666 ms
10175_3zhan.jpg
13958 ms
1505pro.png
19657 ms
10152_3zhan.png
14511 ms
10153_3zhan.png
14514 ms
0cacfb19-148a-4d4b-bdfc-af09da1bae55.jpg
15211 ms
aae2f8b0-ff38-4d3a-bd79-48bfda8a68b3.jpg
15211 ms
h.js
2660 ms
f045b9a9-40dd-4e04-bf58-45af45350894.jpg
15396 ms
63832f3a-6efc-4f38-9a9b-7e5874e5ddc8.jpg
20345 ms
dcc64833-d746-415e-a666-a43678ce4408.jpg
16005 ms
d28e0f13-e480-4651-8df9-b960dd26af63.jpg
19157 ms
f1e13db0-8ca3-463a-a4de-0c3e4c024d9d.jpg
19996 ms
4d1ff2dd-704c-4d00-b711-9015ecc97bc5.jpg
19932 ms
1d14fe9b-0531-4d85-b618-abcba0fea4aa.jpg
19572 ms
10386_3zhan.jpg
18819 ms
10387_3zhan.jpg
18957 ms
21.gif
1042 ms
hm.gif
1031 ms
10388_3zhan.png
17789 ms
UserVisitLogAction.do
756 ms
4215 ms
10389_3zhan.jpg
17462 ms
10390_3zhan.jpg
16906 ms
getmodules
608 ms
10523_3zhan.jpg
17998 ms
10524_3zhan.jpg
18366 ms
blank.gif
374 ms
13_gb_s.jpg
20131 ms
copyright_logo.png
1394 ms
api.map.baidu.com
330 ms
getmodules
316 ms
api.map.baidu.com
274 ms
getmodules
265 ms
8790_3zhan.png
13832 ms
10129_3zhan.jpg
13956 ms
10141_3zhan.png
13045 ms
main.gif
10548 ms
10178_3zhan.jpg
10007 ms
right3.gif
9729 ms
left3.gif
9267 ms
10143_3zhan.png
9189 ms
10142_3zhan.png
9045 ms
8801_3zhan.jpg
8756 ms
8308_3zhan.gif
8633 ms
8794_3zhan.jpg
8461 ms
627_3zhan.gif
8512 ms
10144_3zhan.png
7956 ms
10145_3zhan.png
8037 ms
8799_3zhan.png
7440 ms
8800_3zhan.png
7466 ms
8770_3zhan.png
9679 ms
8878_3zhan.png
7297 ms
blank.gif
287 ms
8774_3zhan.png
5361 ms
8965_3zhan.png
4311 ms
en.cleanairchina.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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
Form elements do not have associated labels
Links do not have a discernible name
en.cleanairchina.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
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
en.cleanairchina.org 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
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise En.cleanairchina.org can be misinterpreted by Google and other search engines. Our service has detected that English 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 En.cleanairchina.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.
en.cleanairchina.org
Open Graph description is not detected on the main page of En Clean Air 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: