21 sec in total
1.5 sec
18.7 sec
798 ms
Welcome to web4s.vn homepage info - get ready to check Web4s best content for Vietnam right away, or after learning these important things about web4s.vn
Công ty thiết kế website chuyên nghiệp ⭐-⭐-⭐ Làm Web uy tín với dịch vụ thiết kế website giá rẻ 9K/Ngày ⭕ Thiết kế trang Web chất lượng tặng Domain, Hosting, Umail..
Visit web4s.vnWe analyzed Web4s.vn page load time and found that the first response time was 1.5 sec and then it took 19.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.
web4s.vn performance score
name
value
score
weighting
Value3.6 s
31/100
10%
Value7.8 s
3/100
25%
Value19.3 s
0/100
10%
Value30,550 ms
0/100
30%
Value0.469
18/100
15%
Value40.1 s
0/100
10%
1485 ms
718 ms
724 ms
490 ms
984 ms
Our browser made a total of 137 requests to load all elements on the main page. We found that 66% of them (91 requests) were addressed to the original Web4s.vn, 12% (17 requests) were made to Nhanhoa.com and 7% (9 requests) were made to Liveonline.nhanhoa.com. The less responsive or slowest element that took the longest time to load (15.1 sec) relates to the external source Nhanhoa.com.
Page size can be reduced by 1.0 MB (15%)
7.0 MB
5.9 MB
In fact, the total size of Web4s.vn main page is 7.0 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. 50% of websites need less resources to load. Images take 6.0 MB which makes up the majority of the site volume.
Potential reduce by 93.2 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 21.8 kB, which is 20% 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 93.2 kB or 87% of the original size.
Potential reduce by 284.2 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. Web4s images are well optimized though.
Potential reduce by 383.7 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 383.7 kB or 70% of the original size.
Potential reduce by 270.8 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. Web4s.vn needs all CSS files to be minified and compressed as it can save up to 270.8 kB or 83% of the original size.
Number of requests can be reduced by 39 (31%)
125
86
The browser has sent 125 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Web4s. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.
web4s.vn
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t6.css
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content.css
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jquery_popup.css
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bootstrap.min.css
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theme.css
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reset.css
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responsive.css
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font-awesome.min.css
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captions.css
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settings.css
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jquery.bxslider.css
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jquery-1.11.0.min.js
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js_global_300713.js
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js_php.js
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js_var.php
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conversion.js
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bootstrap.min.js
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custom.js
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logo.png
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online
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sdk.js
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fbds.js
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fbevents.js
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analytics.js
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pix.gif
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track.js
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HelveticaNeue-Light.woff
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web4s.vn accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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.
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.
web4s.vn 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
Page has valid source maps
web4s.vn 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
Document doesn't have a valid hreflang
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
VI
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Web4s.vn can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese 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 Web4s.vn 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.
web4s.vn
Open Graph description is not detected on the main page of Web4s. 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: