Tools & Wizards About Us

Report Summary

  • 3

    Performance

    Renders faster than
    20% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

viethungaudio.vn

THIẾT BỊ ÂM THANH HỘI TRƯỜNG, PHÒNG HỌP - VIỆT HƯNG AUDIO

Page Load Speed

25.5 sec in total

First Response

767 ms

Resources Loaded

23.6 sec

Page Rendered

1.2 sec

About Website

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

Việt Hưng Audio - Phân phối thiết bị âm thanh hội trường, hội thảo, phòng họp chuyên nghiệp giá gốc. Lắp đặt âm thanh ánh sáng hội trường, sân khấu, dàn âm thanh karaoke, âm thanh hội thảo, loa, micro...

Visit viethungaudio.vn

Key Findings

We analyzed Viethungaudio.vn page load time and found that the first response time was 767 ms and then it took 24.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

viethungaudio.vn performance score

3

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

6/100

10%

LCP (Largest Contentful Paint)

Value24.3 s

0/100

25%

SI (Speed Index)

Value17.6 s

0/100

10%

TBT (Total Blocking Time)

Value2,130 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value1

2/100

15%

TTI (Time to Interactive)

Value24.9 s

0/100

10%

Network Requests Diagram

viethungaudio.vn

767 ms

viethungaudio.vn

2997 ms

wp-emoji-release.min.js

485 ms

extra.min.css

744 ms

style.min.css

741 ms

Our browser made a total of 332 requests to load all elements on the main page. We found that 98% of them (326 requests) were addressed to the original Viethungaudio.vn, 1% (2 requests) were made to Googletagmanager.com and 0% (1 request) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (19.8 sec) relates to the external source Cdn.autoads.asia.

Page Optimization Overview & Recommendations

Page size can be reduced by 494.8 kB (5%)

Content Size

9.9 MB

After Optimization

9.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Viethungaudio.vn main page is 9.9 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. Only a small number of websites need less resources to load. Images take 9.2 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 379.6 kB

  • Original 428.7 kB
  • After minification 411.0 kB
  • After compression 49.1 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 379.6 kB or 89% of the original size.

Image Optimization

-1%

Potential reduce by 107.8 kB

  • Original 9.2 MB
  • After minification 9.1 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. Viethung AUDIO images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 3.2 kB

  • Original 178.2 kB
  • After minification 178.2 kB
  • After compression 175.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-4%

Potential reduce by 4.2 kB

  • Original 103.5 kB
  • After minification 103.3 kB
  • After compression 99.3 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. Viethungaudio.vn has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 75 (23%)

Requests Now

326

After Optimization

251

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 326 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Viethung AUDIO. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 33 to 1 for JavaScripts and from 21 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

viethungaudio.vn accessibility score

59

Accessibility Issues

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

High

[aria-*] attributes do not match their roles

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

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

[id] attributes on active, focusable elements are not unique

High

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

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

viethungaudio.vn best practices score

58

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

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

viethungaudio.vn SEO score

86

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

Language and Encoding

  • Language Detected

    VI

  • Language Claimed

    VI

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Viethungaudio.vn can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it matches the claimed language. Our system also found out that Viethungaudio.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 data is detected on the main page of Viethung AUDIO. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: