Access baigiang.violet.vn. Thư viện Bài giảng điện tử

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value12.4 s

0/100

25%

SI (Speed Index)

Value15.8 s

0/100

10%

TBT (Total Blocking Time)

Value2,320 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.065

97/100

15%

TTI (Time to Interactive)

Value18.7 s

3/100

10%

baigiang.violet.vn

1807 ms

a52d29e6c87d0a503197f07a8520ba36_1504114622.css

875 ms

3ba054f42ce14e61c687e601f39df04e_1504114622.js

1877 ms

ants.js

4629 ms

4048.js

915 ms

Our browser made a total of 148 requests to load all elements on the main page. We found that 8% of them (12 requests) were addressed to the original Baigiang.violet.vn, 47% (70 requests) were made to D2.violet.vn and 5% (8 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (13.1 sec) relates to the external source Cse.google.com.

Content Size

5.1 MB

After Optimization

2.4 MB

In fact, the total size of Baigiang.violet.vn main page is 5.1 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. 75% 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 3.6 MB which makes up the majority of the site volume.

HTML Optimization

-9%

Potential reduce by 10 B

Original 108 B
After minification 108 B
After compression 98 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

-4%

Potential reduce by 48.5 kB

Original 1.3 MB
After minification 1.2 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. Baigiang Violet images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 2.5 MB

Original 3.6 MB
After minification 3.5 MB
After compression 1.1 MB

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 2.5 MB or 70% of the original size.

CSS Optimization

-83%

Potential reduce by 191.6 kB

Original 229.9 kB
After minification 226.2 kB
After compression 38.3 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. Baigiang.violet.vn needs all CSS files to be minified and compressed as it can save up to 191.6 kB or 83% of the original size.

Requests Now

136

After Optimization

The browser has sent 136 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Baigiang 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 31 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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

High

Links do not have a discernible name

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

High

Missing source maps for large first-party JavaScript

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

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Baigiang.violet.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 Baigiang.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

baigiang.violet.vn

Open Graph description is not detected on the main page of Baigiang 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

Thư viện Bài giảng điện tử

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

baigiang.violet.vn

a52d29e6c87d0a503197f07a8520ba36_1504114622.css

3ba054f42ce14e61c687e601f39df04e_1504114622.js

ants.js

4048.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

baigiang.violet.vn

a52d29e6c87d0a503197f07a8520ba36_1504114622.css

3ba054f42ce14e61c687e601f39df04e_1504114622.js

ants.js

4048.js

lesson_20170831231036.js

adsbygoogle.js

ad-exchange.js

style1.css

jquery.min.js

script.js

jcat170829133657.js

bannerViOLETbaigiang1090.jpg

kg1718.png

Slide0.jpg

banner-baigiang-1090_logo1.jpg

banner-baigiang-1090_logo2.jpg

12110834.jpg

12110829.jpg

12072606.jpg

phone.png

mobile.png

email.png

teamviewer.png

ta123.png

bg1.gif

chromebg.gif

block-header.gif

block-content.gif

Slide0.jpg

Slide0.jpg

Slide0.jpg

Slide0.jpg

Slide0.jpg

Slide0.jpg

Slide0.jpg

Slide0.jpg

Slide0.jpg

Slide0.jpg

Slide0.jpg

Slide0.jpg

Slide0.jpg

Slide0.jpg