6.5 sec in total
1 sec
4.7 sec
822 ms
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Visit 400app.netWe analyzed 400app.net page load time and found that the first response time was 1 sec and then it took 5.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
400app.net performance score
name
value
score
weighting
Value2.7 s
60/100
10%
Value8.0 s
3/100
25%
Value6.5 s
40/100
10%
Value110 ms
98/100
30%
Value0.099
90/100
15%
Value26.1 s
1/100
10%
1012 ms
1718 ms
1864 ms
1135 ms
314 ms
Our browser made a total of 26 requests to load all elements on the main page. We found that 88% of them (23 requests) were addressed to the original 400app.net, 4% (1 request) were made to Js.users.51.la and 4% (1 request) were made to Icon.51.la. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain 400app.net.
Page size can be reduced by 67.3 kB (18%)
367.9 kB
300.6 kB
In fact, the total size of 400app.net main page is 367.9 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. 15% of websites need less resources to load. Images take 291.6 kB which makes up the majority of the site volume.
Potential reduce by 13.3 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 13.3 kB or 70% of the original size.
Potential reduce by 14.5 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. 400 App images are well optimized though.
Potential reduce by 29.5 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 29.5 kB or 65% of the original size.
Potential reduce by 10.1 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. 400app.net needs all CSS files to be minified and compressed as it can save up to 10.1 kB or 83% of the original size.
Number of requests can be reduced by 6 (24%)
25
19
The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 400 App. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.
400app.net
1012 ms
issusine.css
1718 ms
common.js
1864 ms
16446160.js
1135 ms
bgj.gif
314 ms
bg.gif
91 ms
righttop.gif
92 ms
logo.gif
138 ms
icon10.gif
140 ms
201503090903407135.jpg
430 ms
201503090903318586.jpg
358 ms
201503090903217137.jpg
178 ms
201503090903123488.jpg
247 ms
201503090902576822.jpg
753 ms
rss.png
213 ms
1.gif
768 ms
index_top_bg03.gif
245 ms
index_top_bg01.gif
279 ms
banner.gif
315 ms
title.gif
318 ms
dotline.gif
348 ms
index_left.jpg
298 ms
dotline2.gif
302 ms
index_top_bg02.gif
325 ms
icon_5.gif
535 ms
hm.js
1790 ms
400app.net accessibility score
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
400app.net 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
Registers an unload listener
Detected JavaScript libraries
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
400app.net SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Page is blocked from indexing
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
N/A
ZH
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 400app.net can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Chinese. Our system also found out that 400app.net 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.
400app.net
Open Graph description is not detected on the main page of 400 App. 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: