38.8 sec in total
1.1 sec
37.3 sec
384 ms
Click here to check amazing 51 Changdu content. Otherwise, check out these important facts you probably never knew about 51changdu.com
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Visit 51changdu.comWe analyzed 51changdu.com page load time and found that the first response time was 1.1 sec and then it took 37.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 13 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
51changdu.com performance score
name
value
score
weighting
Value3.5 s
34/100
10%
Value8.8 s
1/100
25%
Value7.6 s
26/100
10%
Value120 ms
97/100
30%
Value0.003
100/100
15%
Value6.8 s
55/100
10%
1148 ms
1096 ms
1915 ms
13215 ms
4484 ms
Our browser made a total of 47 requests to load all elements on the main page. We found that 66% of them (31 requests) were addressed to the original 51changdu.com, 9% (4 requests) were made to Tjs.sjs.sinajs.cn and 6% (3 requests) were made to Js.t.sinajs.cn. The less responsive or slowest element that took the longest time to load (20.4 sec) belongs to the original domain 51changdu.com.
Page size can be reduced by 140.9 kB (46%)
306.1 kB
165.2 kB
In fact, the total size of 51changdu.com main page is 306.1 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. 20% of websites need less resources to load. Javascripts take 158.9 kB which makes up the majority of the site volume.
Potential reduce by 11.1 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 3.0 kB, which is 19% 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 11.1 kB or 70% of the original size.
Potential reduce by 24.6 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. Obviously, 51 Changdu needs image optimization as it can save up to 24.6 kB or 22% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 88.4 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 88.4 kB or 56% of the original size.
Potential reduce by 16.8 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. 51changdu.com needs all CSS files to be minified and compressed as it can save up to 16.8 kB or 78% of the original size.
Number of requests can be reduced by 10 (32%)
31
21
The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Changdu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.
51changdu.com
1148 ms
www.51changdu.com
1096 ms
style.css
1915 ms
jquery-1.7.2.min.js
13215 ms
slides.min.jquery.js
4484 ms
wb.js
1188 ms
jQuery.hhShare.min.js
4094 ms
logo_20160119.png
392 ms
hui_bg.jpg
3803 ms
full_bg.png
19823 ms
top_nav_on.png
826 ms
lo_1.png
19821 ms
lo_2.png
19821 ms
lo_3_1.png
19821 ms
index_lo.png
5621 ms
down_btn.png
6920 ms
bb.png
6489 ms
index_ts_1.png
7261 ms
index_ts_2.png
11357 ms
index_ts_3.png
9115 ms
index_ts_4.png
14268 ms
index_ts_5.png
13214 ms
index_ts_6.png
15767 ms
foot_bg.jpg
19818 ms
images_jjcc_gt.gif
19817 ms
images_jjcc_jj.jpg
19817 ms
images_jjcc_cc.jpg
19818 ms
icon_sweep.png
19818 ms
cd_ewm.jpg
19818 ms
icon_back.png
19818 ms
h.js
2004 ms
logo_20160119.png
20438 ms
21.gif
774 ms
loading1.gif
292 ms
bundle.js
2622 ms
hm.gif
360 ms
top_show_xx.png
19665 ms
client.js
4 ms
iframeWidget.js
81 ms
aj_relationship.php
3427 ms
followbutton.php
6385 ms
followButton.css
435 ms
sso.js
314 ms
followButton.js
139 ms
suda.js
137 ms
bg_flbtn.png
28 ms
b.gif
1192 ms
51changdu.com 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.
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
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.
51changdu.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
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
51changdu.com 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
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 51changdu.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 51changdu.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.
51changdu.com
Open Graph description is not detected on the main page of 51 Changdu. 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: