41.2 sec in total
16.9 sec
23.5 sec
851 ms
Visit 51test.net now to see the best up-to-date 51 Test content for China and also check out these interesting facts you probably never knew about 51test.net
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Visit 51test.netWe analyzed 51test.net page load time and found that the first response time was 16.9 sec and then it took 24.3 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.
51test.net performance score
name
value
score
weighting
Value2.9 s
54/100
10%
Value4.5 s
38/100
25%
Value4.6 s
71/100
10%
Value50 ms
100/100
30%
Value0
100/100
15%
Value4.5 s
82/100
10%
16908 ms
5701 ms
2604 ms
10762 ms
3810 ms
Our browser made a total of 78 requests to load all elements on the main page. We found that 58% of them (45 requests) were addressed to the original 51test.net, 9% (7 requests) were made to Cpro.baidustatic.com and 6% (5 requests) were made to Bdimg.share.baidu.com. The less responsive or slowest element that took the longest time to load (16.9 sec) belongs to the original domain 51test.net.
Page size can be reduced by 1.6 MB (49%)
3.2 MB
1.6 MB
In fact, the total size of 51test.net main page is 3.2 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. 35% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.
Potential reduce by 180.8 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 28.3 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 180.8 kB or 86% of the original size.
Potential reduce by 109.7 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. 51 Test images are well optimized though.
Potential reduce by 478.1 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 478.1 kB or 68% of the original size.
Potential reduce by 818.1 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. 51test.net needs all CSS files to be minified and compressed as it can save up to 818.1 kB or 92% of the original size.
Number of requests can be reduced by 35 (46%)
76
41
The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Test. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and as a result speed up the page load time.
51test.net
16908 ms
style.css
5701 ms
link.css
2604 ms
jquery-1.4a2.min.js
10762 ms
jquery.KinSlideshow-1.2.1.min.js
3810 ms
common_index.js
4229 ms
s.js
1025 ms
cpabm.jpg
3023 ms
20104221841229142.jpg
2139 ms
zhangf540820111218112066802.jpg
5218 ms
header-container-bg.jpg
458 ms
button_login.gif
474 ms
button_reg.gif
474 ms
quanbukaoshi.jpg
473 ms
51testlogo.gif
1882 ms
page-weather-bg.jpg
931 ms
listen.gif
945 ms
baoban.gif
1412 ms
goushu.gif
1413 ms
student.gif
1317 ms
ziliao.gif
1414 ms
answer.gif
1775 ms
1dui1_234x60.jpg
6413 ms
ppzq.jpg
2370 ms
zq2.jpg
5655 ms
chinaacc_logo.jpg
2206 ms
zq6.jpg
2356 ms
htexam.jpg
4351 ms
128x48logo.jpg
4507 ms
zq5.jpg
3778 ms
wsrcw.jpg
3343 ms
kycj.jpg
6141 ms
cetbm.jpg
4762 ms
zcwyzt.jpg
5894 ms
gwy1-234x60.jpg
6295 ms
zikao.jpg
4256 ms
zaojiashi.jpg
4443 ms
gwy1_960x90.jpg
4791 ms
zcwy_960x80.jpg
6398 ms
dcpm
800 ms
titlebg.jpg
3873 ms
kstxbg1.jpg
4331 ms
point26.jpg
4100 ms
kcml.jpg
4967 ms
jtbg_new.jpg
5220 ms
jianzaoshi1.jpg
4898 ms
c.js
711 ms
dcpm
395 ms
dcpm
520 ms
hzhb.jpg
1838 ms
adx.php
2147 ms
reduce_bd-logo1_oper.png
516 ms
yqlj.jpg
4718 ms
footbg.jpg
2268 ms
cm.js
966 ms
c.php
1690 ms
stat.php
1406 ms
stat.php
2511 ms
shell_v2.js
567 ms
stat.htm
264 ms
core.php
550 ms
stat.htm
278 ms
core.php
546 ms
closefeedback.min.js
504 ms
bds_s_v2.js
273 ms
bdsstyle.css
280 ms
r2.gif
540 ms
reduce_promotion_oper.png
497 ms
bd_logo.png
510 ms
bg_rb.png
526 ms
stat.htm
163 ms
core.php
879 ms
9.gif
2123 ms
h.js
895 ms
s.js
2053 ms
logger.js
292 ms
hm.gif
449 ms
app.gif
793 ms
51test.net accessibility score
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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.
51test.net best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
51test.net 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
N/A
GB2312
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 51test.net 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 51test.net main page’s claimed encoding is gb2312. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
51test.net
Open Graph description is not detected on the main page of 51 Test. 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: