Report Summary

  • 37

    Performance

    Renders faster than
    57% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

s2u.vn

S2U.VN - Nhà cung cấp tên miền, hosting uy tín tại Việt Nam

Page Load Speed

7.2 sec in total

First Response

1.1 sec

Resources Loaded

5.3 sec

Page Rendered

745 ms

s2u.vn screenshot

About Website

Visit s2u.vn now to see the best up-to-date S2U content for Vietnam and also check out these interesting facts you probably never knew about s2u.vn

Chuyên cung cấp dịch vụ Tên Miền, Hosting, Email, Website uy tín cùng đội ngũ hỗ trợ chuyên nghiệp, rất hân hạnh được phục vụ quý khách.

Visit s2u.vn

Key Findings

We analyzed S2u.vn page load time and found that the first response time was 1.1 sec and then it took 6.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

s2u.vn performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

5/100

10%

LCP (Largest Contentful Paint)

Value5.9 s

14/100

25%

SI (Speed Index)

Value38.1 s

0/100

10%

TBT (Total Blocking Time)

Value590 ms

50/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.9 s

27/100

10%

Network Requests Diagram

www.s2u.vn

1095 ms

style.css

197 ms

green.css

139 ms

responsive.css

139 ms

jquery.js

329 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 84% of them (57 requests) were addressed to the original S2u.vn, 6% (4 requests) were made to Demo.agtheme.com and 4% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain S2u.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 462.6 kB (26%)

Content Size

1.8 MB

After Optimization

1.3 MB

In fact, the total size of S2u.vn main page is 1.8 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. 40% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 25.2 kB

  • Original 31.0 kB
  • After minification 24.3 kB
  • After compression 5.8 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 6.7 kB, which is 22% 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 25.2 kB or 81% of the original size.

Image Optimization

-11%

Potential reduce by 153.4 kB

  • Original 1.4 MB
  • After minification 1.2 MB

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, S2U needs image optimization as it can save up to 153.4 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-72%

Potential reduce by 217.3 kB

  • Original 299.8 kB
  • After minification 219.1 kB
  • After compression 82.5 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 217.3 kB or 72% of the original size.

CSS Optimization

-83%

Potential reduce by 66.7 kB

  • Original 80.0 kB
  • After minification 64.4 kB
  • After compression 13.3 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. S2u.vn needs all CSS files to be minified and compressed as it can save up to 66.7 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (37%)

Requests Now

63

After Optimization

40

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of S2U. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

s2u.vn accessibility score

89

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

s2u.vn best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

s2u.vn SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    VI

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise S2u.vn can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it does not match the claimed English language. Our system also found out that S2u.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.

Social Sharing Optimization

Open Graph description is not detected on the main page of S2U. 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: