Report Summary

  • 33

    Performance

    Renders faster than
    53% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

vistar.vn

CÔNG TY SAO VIỆT - VISTAR CO.LTD

Page Load Speed

93.1 sec in total

First Response

1.2 sec

Resources Loaded

91.2 sec

Page Rendered

690 ms

vistar.vn screenshot

About Website

Welcome to vistar.vn homepage info - get ready to check VISTAR best content for Vietnam right away, or after learning these important things about vistar.vn

CÔNG TY SAO VIỆT - VISTAR CO.LTD Nhà Phân Phối Âm Thanh, Nhạc Cụ Số 1 Tại hà Nội

Visit vistar.vn

Key Findings

We analyzed Vistar.vn page load time and found that the first response time was 1.2 sec and then it took 91.9 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.

Performance Metrics

vistar.vn performance score

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value51.0 s

0/100

25%

SI (Speed Index)

Value14.0 s

1/100

10%

TBT (Total Blocking Time)

Value380 ms

69/100

30%

CLS (Cumulative Layout Shift)

Value0.22

57/100

15%

TTI (Time to Interactive)

Value16.1 s

6/100

10%

Network Requests Diagram

vistar.vn

1188 ms

www.vistar.vn

1618 ms

css.css

818 ms

jquery-1.7.1.min.js

1261 ms

tooltip.js

828 ms

Our browser made a total of 530 requests to load all elements on the main page. We found that 98% of them (520 requests) were addressed to the original Vistar.vn, 0% (2 requests) were made to Google-analytics.com and 0% (2 requests) were made to Facebook.com. The less responsive or slowest element that took the longest time to load (9.7 sec) belongs to the original domain Vistar.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.0 MB (20%)

Content Size

5.1 MB

After Optimization

4.1 MB

In fact, the total size of Vistar.vn main page is 5.1 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 4.3 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 147.2 kB

  • Original 176.3 kB
  • After minification 162.1 kB
  • After compression 29.1 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 147.2 kB or 83% of the original size.

Image Optimization

-10%

Potential reduce by 414.4 kB

  • Original 4.3 MB
  • After minification 3.9 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. VISTAR images are well optimized though.

JavaScript Optimization

-77%

Potential reduce by 424.0 kB

  • Original 552.5 kB
  • After minification 419.2 kB
  • After compression 128.5 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 424.0 kB or 77% of the original size.

CSS Optimization

-81%

Potential reduce by 29.0 kB

  • Original 35.8 kB
  • After minification 26.7 kB
  • After compression 6.8 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. Vistar.vn needs all CSS files to be minified and compressed as it can save up to 29.0 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 41 (8%)

Requests Now

526

After Optimization

485

The browser has sent 526 CSS, Javascripts, AJAX and image requests in order to completely render the main page of VISTAR. 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 from 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

vistar.vn accessibility score

87

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.

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

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

The document uses <meta http-equiv="refresh">

Best Practices

vistar.vn best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

vistar.vn SEO score

91

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

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vistar.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 Vistar.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 VISTAR. 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: