Access about.bang.vn.

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

19/100

10%

LCP (Largest Contentful Paint)

Value18.1 s

0/100

25%

SI (Speed Index)

Value16.7 s

0/100

10%

TBT (Total Blocking Time)

Value720 ms

41/100

30%

CLS (Cumulative Layout Shift)

Value0.183

66/100

15%

TTI (Time to Interactive)

Value21.2 s

1/100

10%

about.bang.vn

1432 ms

jquery-1.8.2.min.js

3115 ms

jquery.upload.min.js

497 ms

function.js

3400 ms

jquery.easing.js

502 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 58% of them (35 requests) were addressed to the original About.bang.vn, 37% (22 requests) were made to Bang.vn and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (9.8 sec) relates to the external source Bang.vn.

Content Size

2.0 MB

After Optimization

1.4 MB

In fact, the total size of About.bang.vn main page is 2.0 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. 20% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 56.2 kB

Original 70.4 kB
After minification 59.1 kB
After compression 14.2 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 11.3 kB, which is 16% 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 56.2 kB or 80% of the original size.

Image Optimization

-8%

Potential reduce by 107.2 kB

Original 1.4 MB
After minification 1.3 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. About Bang images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 308.9 kB

Original 437.6 kB
After minification 409.5 kB
After compression 128.6 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 308.9 kB or 71% of the original size.

CSS Optimization

-84%

Potential reduce by 70.9 kB

Original 84.1 kB
After minification 73.8 kB
After compression 13.2 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. About.bang.vn needs all CSS files to be minified and compressed as it can save up to 70.9 kB or 84% of the original size.

Requests Now

After Optimization

The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of About Bang. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

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

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.

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

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a valid value for its [lang] attribute.

These items highlight common accessibility best practices.

High

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

Search Engine Optimization Advices

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

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

N/A
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise About.bang.vn can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that About.bang.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

about.bang.vn

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

about.bang.vn

jquery-1.8.2.min.js

jquery.upload.min.js

function.js

jquery.easing.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

about.bang.vn

jquery-1.8.2.min.js

jquery.upload.min.js

function.js

jquery.easing.js

swfobject.js

jwplayer.js

jquery.md5.js

divbox.js

me.js

jquery.bxslider.min.js

jquery.mCustomScrollbar.concat.min.js

bxslider.css

layout.css

style.css

divbox.css

jquery.mCustomScrollbar.css

logo_bang_200.png

GAS4yIglXyul6FOjTfSP7A==.jpgx

close.png

clock.gif

icon_home.png

shop.png

raovat.png

icon_blog2.png

trochoi.png

30s.gif

dktv.png

dangky.jpg

w30s.jpg

user.png

loading2.gif

products.png

add-blog.png

private.png

icon-transfer.png

banner_design.png

users.png

music_512.png

web2-0.png

30s-goi-web-gia-re.gif

alexa-bangvn.jpg

thiet-ke-web-129k.png

seo.png