25.8 sec in total
1.7 sec
23.5 sec
620 ms
Click here to check amazing 51IDC content for China. Otherwise, check out these important facts you probably never knew about 51idc.com
51IDC是中国领先的数据中心服务商,IDC混合云托管平台,致力于为公众和商业领域提供数据中心和云服务,以及高质价优的服务器租用、服务器托管、出海专线、互联网带宽和IT基础架构运维管理服务与解决方案
Visit 51idc.comWe analyzed 51idc.com page load time and found that the first response time was 1.7 sec and then it took 24.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.
51idc.com performance score
name
value
score
weighting
Value8.9 s
0/100
10%
Value57.3 s
0/100
25%
Value17.4 s
0/100
10%
Value1,800 ms
10/100
30%
Value0
100/100
15%
Value31.0 s
0/100
10%
1670 ms
1544 ms
817 ms
2402 ms
557 ms
Our browser made a total of 130 requests to load all elements on the main page. We found that 80% of them (104 requests) were addressed to the original 51idc.com, 4% (5 requests) were made to Cm.ipinyou.com and 2% (3 requests) were made to Combo.b.qq.com. The less responsive or slowest element that took the longest time to load (18.3 sec) belongs to the original domain 51idc.com.
Page size can be reduced by 803.5 kB (30%)
2.7 MB
1.9 MB
In fact, the total size of 51idc.com main page is 2.7 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. 45% of websites need less resources to load. Images take 1.9 MB which makes up the majority of the site volume.
Potential reduce by 73.1 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 13.1 kB, which is 14% 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 73.1 kB or 80% of the original size.
Potential reduce by 254.2 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, 51IDC needs image optimization as it can save up to 254.2 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 251.9 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 251.9 kB or 58% of the original size.
Potential reduce by 224.3 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. 51idc.com needs all CSS files to be minified and compressed as it can save up to 224.3 kB or 81% of the original size.
Number of requests can be reduced by 20 (16%)
122
102
The browser has sent 122 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51IDC. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and as a result speed up the page load time.
51idc.com
1670 ms
www.51idc.com
1544 ms
main.css
817 ms
app.css
2402 ms
swfobject.min.css
557 ms
jquery-1.10.2.min.js
1634 ms
jquery.flexslider-min.js
1083 ms
main.js
272 ms
jquery.SuperSlider.js
517 ms
swfobject.js
1065 ms
wpa.php
961 ms
hm.js
1333 ms
zhuge-lastest.min.js
4109 ms
logo.png
311 ms
loading50.gif
322 ms
iso-bsi.jpg
1417 ms
hkcloud.jpg
2530 ms
cdn_banner.jpg
3560 ms
rds.jpg
1507 ms
hkglobal.jpg
5672 ms
c-topology.jpg
1517 ms
cut_line.png
1681 ms
icon1.png
18331 ms
datacenter-map.png
3634 ms
index_customers_bg.jpg
4632 ms
index_game.png
3044 ms
solu_case1.jpg
3300 ms
solu_case3.jpg
3561 ms
solu_case4.jpg
3841 ms
solu_case5.jpg
4401 ms
solu_case7.jpg
4250 ms
solu_case8.jpg
4150 ms
solu_case9.jpg
4421 ms
index_finance.png
5645 ms
f_niwodai.png
4684 ms
f_xinxindai.png
5047 ms
f_tbj.png
4913 ms
f_zzl.png
4961 ms
f_xinerfu.png
5203 ms
f_ldjr.png
5524 ms
f_dyyt.png
6446 ms
f_hycf.png
5459 ms
index_medical.jpg
5750 ms
med1m.jpg
5837 ms
med2m.jpg
6556 ms
med3m.jpg
5953 ms
med4m.jpg
6019 ms
med5m.jpg
6097 ms
login_datason.jsp
3224 ms
med6m.jpg
6173 ms
adv.js
5943 ms
analytics.js
82 ms
Panel.js
252 ms
localStorage.js
263 ms
collect
19 ms
index_esp.png
5975 ms
e1m.jpg
6059 ms
contains.js
109 ms
r.cgi
1119 ms
crmqq.php
15955 ms
wpa_first_heart_beat.php
617 ms
hm.gif
442 ms
e2m.jpg
5168 ms
e3m.jpg
5083 ms
e4m.jpg
5138 ms
e5m.jpg
5332 ms
e6m.jpg
5565 ms
e7m.jpg
3824 ms
e8m.jpg
3840 ms
e9m.jpg
3359 ms
index_education.png
3919 ms
edu1m.jpg
3542 ms
edu2m.jpg
3471 ms
3
1950 ms
edu3m.jpg
3248 ms
edu4m.jpg
3212 ms
edu5m.jpg
3199 ms
edu6m.jpg
3234 ms
edu7m.jpg
3098 ms
index_app.png
4182 ms
a1m.jpg
3256 ms
a2m.jpg
3433 ms
a3m.jpg
2936 ms
a4m.jpg
3034 ms
a5m.jpg
2909 ms
a6m.jpg
3711 ms
index_video.png
2850 ms
v1m.jpg
2980 ms
v2m.jpg
2894 ms
v3m.jpg
2913 ms
v4m.jpg
2950 ms
v5m.jpg
2910 ms
v6m.jpg
2914 ms
index_dsp.png
3175 ms
dsp1m.jpg
3386 ms
dsp2m.jpg
2857 ms
dsp3m.jpg
2850 ms
dsp4m.jpg
2959 ms
dsp5m.jpg
2937 ms
dsp7m.jpg
2982 ms
dsp8m.jpg
3920 ms
dsp9m.jpg
3416 ms
index_logistics.png
2890 ms
l1m.jpg
2847 ms
l2m.jpg
2803 ms
l4m.jpg
2934 ms
l5m.jpg
2891 ms
l6m.jpg
4373 ms
index_erp.png
2987 ms
erp2m.jpg
3129 ms
erp3m.jpg
7301 ms
erp4m.jpg
3171 ms
erp5m.jpg
5632 ms
erp6m.jpg
3017 ms
video-bg.jpg
3980 ms
cma.html
2605 ms
video-start.png
3770 ms
logo-anch-170x38.png
3895 ms
weixinfuwu-erweima-110.jpg
3973 ms
tc-footer-ct-2.png
4448 ms
t.gif
1128 ms
cm.gif
940 ms
t.gif
1010 ms
cms.gif
347 ms
pixel
41 ms
pixel
26 ms
cms.gif
370 ms
cms.gif
412 ms
cm.gif
996 ms
cms.gif
357 ms
51idc.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.
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
Links do not have a discernible name
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
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
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.
51idc.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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
51idc.com 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
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 doesn't use 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 51idc.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 51idc.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.
51idc.com
Open Graph description is not detected on the main page of 51IDC. 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: