Access khanhtoan.violet.vn. (¯`·.º-:¦--Bí kíp Tin học của Lê Bá Khánh Toàn--:¦:-º.·´¯)

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

7/100

10%

LCP (Largest Contentful Paint)

Value8.3 s

2/100

25%

SI (Speed Index)

Value10.8 s

7/100

10%

TBT (Total Blocking Time)

Value160 ms

93/100

30%

CLS (Cumulative Layout Shift)

Value0.087

93/100

15%

TTI (Time to Interactive)

Value8.2 s

41/100

10%

khanhtoan.violet.vn

2766 ms

430b1d0406bac2dd472bb43cb3e28f49_1456802202.css

1359 ms

6c87eda583a786978ac625e852d2d780_1456802179.js

2166 ms

jsapi

37 ms

jcat151004184552.js

6610 ms

Our browser made a total of 85 requests to load all elements on the main page. We found that 25% of them (21 requests) were addressed to the original Khanhtoan.violet.vn, 32% (27 requests) were made to D2.violet.vn and 26% (22 requests) were made to D4.violet.vn. The less responsive or slowest element that took the longest time to load (7.8 sec) relates to the external source D2.violet.vn.

Content Size

967.5 kB

After Optimization

498.3 kB

In fact, the total size of Khanhtoan.violet.vn main page is 967.5 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 35% of websites need less resources to load. Images take 401.2 kB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 191.3 kB

Original 208.1 kB
After minification 197.2 kB
After compression 16.7 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 191.3 kB or 92% of the original size.

Image Optimization

-6%

Potential reduce by 25.6 kB

Original 401.2 kB
After minification 375.5 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. Khanhtoan Violet images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 233.1 kB

Original 333.0 kB
After minification 333.0 kB
After compression 99.9 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 233.1 kB or 70% of the original size.

CSS Optimization

-76%

Potential reduce by 19.1 kB

Original 25.3 kB
After minification 24.0 kB
After compression 6.2 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. Khanhtoan.violet.vn needs all CSS files to be minified and compressed as it can save up to 19.1 kB or 76% of the original size.

Requests Now

After Optimization

The browser has sent 83 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Khanhtoan Violet. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 4 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 keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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

Image elements do not have [alt] attributes

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

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

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

High

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

VI
Language Claimed

EN
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Khanhtoan.violet.vn can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it does not match the claimed English language. Our system also found out that Khanhtoan.violet.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

khanhtoan.violet.vn

Open Graph description is not detected on the main page of Khanhtoan Violet. 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

(¯`·.º-:¦--Bí kíp Tin học của Lê Bá Khánh Toàn--:¦:-º.·´¯)

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

khanhtoan.violet.vn

430b1d0406bac2dd472bb43cb3e28f49_1456802202.css

6c87eda583a786978ac625e852d2d780_1456802179.js

jsapi

jcat151004184552.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

khanhtoan.violet.vn

430b1d0406bac2dd472bb43cb3e28f49_1456802202.css

6c87eda583a786978ac625e852d2d780_1456802179.js

jsapi

jcat151004184552.js

online

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