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Report Summary

About Website

Visit web9.vn now to see the best up-to-date Web 9 content for Vietnam and also check out these interesting facts you probably never knew about web9.vn

Chúng tôi cung cấp cấp giải pháp khép kín từ tư vấn thiết kế web đến vận hành quản trị bán hàng nhằm giúp bạn bán hàng online tốt nhất.

Visit web9.vn

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.2 s

100/100

25%

SI (Speed Index)

Value1.3 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.2 s

100/100

10%

web9.vn

562 ms

Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to Web9.vn and no external sources were called. The less responsive or slowest element that took the longest time to load (562 ms) belongs to the original domain Web9.vn.

Content Size

1.6 MB

After Optimization

1.2 MB

In fact, the total size of Web9.vn main page is 1.6 MB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-5%

Potential reduce by 3 B

Original 66 B
After minification 66 B
After compression 63 B

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. This web page is already compressed.

Image Optimization

-8%

Potential reduce by 104.7 kB

Original 1.2 MB
After minification 1.1 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. Web 9 images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 186.0 kB

Original 255.2 kB
After minification 214.7 kB
After compression 69.2 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 186.0 kB or 73% of the original size.

CSS Optimization

-90%

Potential reduce by 115.0 kB

Original 128.0 kB
After minification 109.8 kB
After compression 13.0 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. Web9.vn needs all CSS files to be minified and compressed as it can save up to 115.0 kB or 90% of the original size.

Requests Now

After Optimization

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Accessibility Issues

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

Document doesn't have a <title> element

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

High

<html> element does not have a [lang] attribute

Search Engine Optimization Advices

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

High

Document doesn't have a <title> element

Language and Encoding

Language Detected

VI
Language Claimed

N/A
Encoding

N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Web9.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 Web9.vn main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

web9.vn

Open Graph description is not detected on the main page of Web 9. 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: