Tools & Wizards About Us

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

bk4.com.vn

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Page Load Speed

25.3 sec in total

First Response

713 ms

Resources Loaded

24.2 sec

Page Rendered

365 ms

About Website

Visit bk4.com.vn now to see the best up-to-date Bk 4 content and also check out these interesting facts you probably never knew about bk4.com.vn

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Key Findings

We analyzed Bk4.com.vn page load time and found that the first response time was 713 ms and then it took 24.6 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. 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

bk4.com.vn performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value15.7 s

0/100

25%

SI (Speed Index)

Value17.3 s

0/100

10%

TBT (Total Blocking Time)

Value2,020 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value22.6 s

1/100

10%

Network Requests Diagram

bk4.com.vn

713 ms

bk4.com.vn

1458 ms

js

70 ms

jquery.min-3.6.4.js

941 ms

js

126 ms

Our browser made a total of 100 requests to load all elements on the main page. We found that 60% of them (60 requests) were addressed to the original Bk4.com.vn, 9% (9 requests) were made to Static.xx.fbcdn.net and 6% (6 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (19.5 sec) belongs to the original domain Bk4.com.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 230.9 kB (20%)

Content Size

1.2 MB

After Optimization

924.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Bk4.com.vn main page is 1.2 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. Javascripts take 518.8 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 98.3 kB

  • Original 122.7 kB
  • After minification 122.5 kB
  • After compression 24.3 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 98.3 kB or 80% of the original size.

Image Optimization

-2%

Potential reduce by 10.1 kB

  • Original 455.5 kB
  • After minification 445.3 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. Bk 4 images are well optimized though.

JavaScript Optimization

-24%

Potential reduce by 122.5 kB

  • Original 518.8 kB
  • After minification 518.7 kB
  • After compression 396.3 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 122.5 kB or 24% of the original size.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 58.6 kB
  • After minification 58.6 kB
  • After compression 58.6 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. Bk4.com.vn has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 27 (31%)

Requests Now

88

After Optimization

61

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 88 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bk 4. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

bk4.com.vn accessibility score

85

Accessibility Issues

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

Links do not have a discernible name

Best Practices

bk4.com.vn best practices score

67

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

High

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

bk4.com.vn SEO score

100

Search Engine Optimization Advices

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 Bk4.com.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 Bk4.com.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 Bk 4. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: