23.1 sec in total
9.8 sec
13 sec
221 ms
Click here to check amazing Zzb Ecnu content for China. Otherwise, check out these important facts you probably never knew about zzb.ecnu.edu.cn
Visit zzb.ecnu.edu.cnWe analyzed Zzb.ecnu.edu.cn page load time and found that the first response time was 9.8 sec and then it took 13.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
zzb.ecnu.edu.cn performance score
name
value
score
weighting
Value1.6 s
94/100
10%
Value4.8 s
31/100
25%
Value8.3 s
19/100
10%
Value40 ms
100/100
30%
Value0.004
100/100
15%
Value2.3 s
99/100
10%
9806 ms
1040 ms
1820 ms
1040 ms
779 ms
Our browser made a total of 30 requests to load all elements on the main page. We found that all of those requests were addressed to Zzb.ecnu.edu.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (9.8 sec) belongs to the original domain Zzb.ecnu.edu.cn.
Page size can be reduced by 74.7 kB (63%)
118.1 kB
43.4 kB
In fact, the total size of Zzb.ecnu.edu.cn main page is 118.1 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. 30% of websites need less resources to load. HTML takes 75.9 kB which makes up the majority of the site volume.
Potential reduce by 66.2 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 12.3 kB, which is 16% 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 66.2 kB or 87% of the original size.
Potential reduce by 7.6 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, Zzb Ecnu needs image optimization as it can save up to 7.6 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 789 B
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. Zzb.ecnu.edu.cn needs all CSS files to be minified and compressed as it can save up to 789 B or 75% of the original size.
Number of requests can be reduced by 11 (38%)
29
18
The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zzb Ecnu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.
zzb.ecnu.edu.cn
9806 ms
globaltt.css
1040 ms
jquery.js
1820 ms
jquery.params.js
1040 ms
classbase.js
779 ms
windowopener.js
1040 ms
divwin.css
770 ms
ListMenu.js
1029 ms
bg_chip.gif
262 ms
header_logo.png
1904 ms
logbg.gif
267 ms
menubg.jpg
266 ms
6a54f310-d830-45d4-a0bf-b8a90e263275.gif
266 ms
ztmore.gif
268 ms
4693df8b-7118-4c7b-a4e7-159eed63345a_s.jpg
1039 ms
41876bd5-a0df-4484-979e-6afd7bf52471_s.jpg
524 ms
98addfb8-fadc-4ab7-87c2-fff94216cf23_s.jpg
1039 ms
71726b77-5d30-4f2b-8684-c1bb8645dc20_s.jpg
1301 ms
twoDimensionCode.jpg
1039 ms
fe1b2665-e616-45d9-9127-1b8ee839fb16.jpg
783 ms
f035e679-07d3-455a-899c-b53c786493f3.jpg
1042 ms
9b634c93-1918-4f88-ab40-675568ba7c38.jpg
1300 ms
28737d38-b9ee-41bc-af0e-6e84795dba44.jpg
1556 ms
83fe1954-be59-4cfd-969c-f62d5aa02770.jpg
1559 ms
c693b359-ae5e-4905-92c8-2edda31d5149.jpg
1301 ms
more.gif
1559 ms
titlebg.gif
1508 ms
titlebg30.gif
1513 ms
log1.png
1766 ms
bottomLogo.png
1768 ms
zzb.ecnu.edu.cn 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
Form elements do not have associated labels
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
List items (<li>) are not contained within <ul> or <ol> parent elements.
zzb.ecnu.edu.cn 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
zzb.ecnu.edu.cn 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
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zzb.ecnu.edu.cn 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 Zzb.ecnu.edu.cn 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.
zzb.ecnu.edu.cn
Open Graph description is not detected on the main page of Zzb Ecnu. 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: