Access luyenthi.duytan.edu.vn. Luyện Thi THPT & Đại Học Trực Tuyến

name

value

score

weighting

FCP (First Contentful Paint)

Value6.1 s

3/100

10%

LCP (Largest Contentful Paint)

Value9.0 s

1/100

25%

SI (Speed Index)

Value11.6 s

4/100

10%

TBT (Total Blocking Time)

Value1,960 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.107

88/100

15%

TTI (Time to Interactive)

Value15.7 s

6/100

10%

luyenthi.duytan.edu.vn

944 ms

luyenthi.duytan.edu.vn

1359 ms

style.css

307 ms

slideshow.css

615 ms

bootstrap.css

1521 ms

Our browser made a total of 80 requests to load all elements on the main page. We found that 93% of them (74 requests) were addressed to the original Luyenthi.duytan.edu.vn, 3% (2 requests) were made to Fonts.gstatic.com and 1% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (3 sec) belongs to the original domain Luyenthi.duytan.edu.vn.

Content Size

2.1 MB

After Optimization

1.5 MB

In fact, the total size of Luyenthi.duytan.edu.vn main page is 2.1 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. 70% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 108.1 kB

Original 120.2 kB
After minification 79.3 kB
After compression 12.2 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 40.9 kB, which is 34% 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 108.1 kB or 90% of the original size.

Image Optimization

-2%

Potential reduce by 28.4 kB

Original 1.5 MB
After minification 1.4 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. Luyen Thi Duy Tan images are well optimized though.

JavaScript Optimization

-84%

Potential reduce by 462.0 kB

Original 548.8 kB
After minification 310.4 kB
After compression 86.8 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 462.0 kB or 84% of the original size.

CSS Optimization

-50%

Potential reduce by 7.4 kB

Original 14.8 kB
After minification 13.6 kB
After compression 7.4 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. Luyenthi.duytan.edu.vn needs all CSS files to be minified and compressed as it can save up to 7.4 kB or 50% of the original size.

Requests Now

After Optimization

The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Luyen Thi Duy Tan. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

High

[aria-hidden="true"] elements contain focusable descendents

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 interpretation of your content by users in different locales.

High

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

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

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

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

High

Links are not crawlable

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

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 Luyenthi.duytan.edu.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 Luyenthi.duytan.edu.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

luyenthi.duytan.edu.vn

Open Graph description is not detected on the main page of Luyen Thi Duy Tan. 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

Luyện Thi THPT & Đại Học Trực Tuyến - Đại học Duy Tân

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

luyenthi.duytan.edu.vn

luyenthi.duytan.edu.vn

style.css

slideshow.css

bootstrap.css

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

luyenthi.duytan.edu.vn

luyenthi.duytan.edu.vn

style.css

slideshow.css

bootstrap.css

flexslider.css

menu_hide.css

respontive.css

update_css.css

logon_profile_menu.css

owl.carousel.css

font_fa.css

jquery-1.11.2.js

Encode.js

rating.css

jQuery.equalHeights.js

dangnhap.css

login_popup.js

md5.js

bootstrap.js

fix_menu.js

slideshow.js

student_top.js

modernizr.js

menu_hide_1.js

jquery.flexslider.js

owl.carousel.js

my_query.js

css

gtm.js

logo_respon.png

tenlua.png

logo_top.png

icon_login.png

img_slide_02.png

img_slide_text.png

img_slide_01.png

tutorial_png.png

cuckoo.png

drop-down-arrow.png

bnt_vaohoc.png

icon_video.png

icon_note.png