4.5 sec in total
821 ms
2.6 sec
1.1 sec
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Visit 21530000.comWe analyzed 21530000.com page load time and found that the first response time was 821 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
21530000.com performance score
name
value
score
weighting
Value3.6 s
31/100
10%
Value5.6 s
17/100
25%
Value6.7 s
36/100
10%
Value7,160 ms
0/100
30%
Value0.014
100/100
15%
Value12.4 s
14/100
10%
821 ms
437 ms
441 ms
440 ms
872 ms
Our browser made a total of 40 requests to load all elements on the main page. We found that 93% of them (37 requests) were addressed to the original 21530000.com, 5% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain 21530000.com.
Page size can be reduced by 77.0 kB (30%)
257.9 kB
180.8 kB
In fact, the total size of 21530000.com main page is 257.9 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. 25% of websites need less resources to load. Images take 140.0 kB which makes up the majority of the site volume.
Potential reduce by 10.1 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 1.5 kB, which is 11% 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 10.1 kB or 72% of the original size.
Potential reduce by 8.3 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. 21530000 images are well optimized though.
Potential reduce by 52.7 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 52.7 kB or 55% of the original size.
Potential reduce by 5.9 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. 21530000.com needs all CSS files to be minified and compressed as it can save up to 5.9 kB or 68% of the original size.
Number of requests can be reduced by 10 (26%)
38
28
The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 21530000. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
21530000.com
821 ms
base.css
437 ms
common.css
441 ms
page.css
440 ms
jquery-1.3.2.min.js
872 ms
menu.css
441 ms
hoverIntent.js
441 ms
superfish.js
659 ms
Sidebar.css
659 ms
JQuery.MenuTree.js
659 ms
slidemenu.js
662 ms
addthis_widget.js
661 ms
page_top.png
319 ms
logo.gif
300 ms
email.png
318 ms
phone.png
299 ms
fax.png
317 ms
menu_bg.png
308 ms
menu_l.png
578 ms
banner.gif
780 ms
lg-share-en.gif
572 ms
col2-3.gif
571 ms
col2-4.gif
762 ms
col2-bottom.gif
760 ms
i-new21530000.jpg
1052 ms
col3-img1.gif
740 ms
col3-img2.gif
734 ms
col3-img3.gif
953 ms
core053.js
126 ms
Sidebar_top.png
614 ms
Sidebar_bg.png
625 ms
list1.png
617 ms
list2.png
610 ms
Sidebar_bottom.png
693 ms
faq_bg.png
690 ms
faq_top.png
681 ms
faq_back.png
680 ms
faq_bottom.png
678 ms
ga.js
199 ms
__utm.gif
47 ms
21530000.com accessibility score
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
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
21530000.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
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
21530000.com SEO score
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 21530000.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 21530000.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.
21530000.com
Open Graph description is not detected on the main page of 21530000. 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: