Access elc.ehou.edu.vn. Trung tâm Đào tạo Trực tuyến

name

value

score

weighting

FCP (First Contentful Paint)

Value10.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value34.9 s

0/100

25%

SI (Speed Index)

Value25.9 s

0/100

10%

TBT (Total Blocking Time)

Value2,460 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value45.6 s

0/100

10%

elc.ehou.edu.vn

467 ms

elc.ehou.edu.vn

3731 ms

bootstrap.css

2926 ms

font-awesome.min.css

1136 ms

animate.css

1616 ms

Our browser made a total of 137 requests to load all elements on the main page. We found that 82% of them (112 requests) were addressed to the original Elc.ehou.edu.vn, 6% (8 requests) were made to Youtube.com and 3% (4 requests) were made to Jnn-pa.googleapis.com. The less responsive or slowest element that took the longest time to load (20.4 sec) belongs to the original domain Elc.ehou.edu.vn.

Content Size

3.4 MB

After Optimization

2.5 MB

In fact, the total size of Elc.ehou.edu.vn main page is 3.4 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 2.2 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 80.5 kB

Original 97.4 kB
After minification 86.1 kB
After compression 16.9 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 11.4 kB, which is 12% 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 80.5 kB or 83% of the original size.

Image Optimization

-4%

Potential reduce by 88.5 kB

Original 2.2 MB
After minification 2.1 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. Elc Ehou images are well optimized though.

JavaScript Optimization

-53%

Potential reduce by 307.1 kB

Original 574.3 kB
After minification 482.5 kB
After compression 267.2 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 307.1 kB or 53% of the original size.

CSS Optimization

-76%

Potential reduce by 397.9 kB

Original 521.6 kB
After minification 455.3 kB
After compression 123.7 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. Elc.ehou.edu.vn needs all CSS files to be minified and compressed as it can save up to 397.9 kB or 76% of the original size.

Requests Now

128

After Optimization

The browser has sent 128 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Elc Ehou. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 30 to 1 for JavaScripts and from 25 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 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

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

High

Page has valid source maps

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

VI
Language Claimed

EN
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Elc.ehou.edu.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 Elc.ehou.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

elc.ehou.edu.vn

Open Graph description is not detected on the main page of Elc Ehou. 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

Trung tâm Đào tạo Trực tuyến – Trường Đại học Mở Hà Nội

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

elc.ehou.edu.vn

elc.ehou.edu.vn

bootstrap.css

font-awesome.min.css

animate.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

elc.ehou.edu.vn

elc.ehou.edu.vn

bootstrap.css

font-awesome.min.css

animate.css

my-style-woocommerce.css

toan.css

inconcall_messenger.css

style.css

js

toolbar.css

style.css

style.min.css

swipebox.min.css

woocommerce-layout.css

woocommerce.css

wpba-frontend.css

pagenavi-css.css

public.css

jquery.min.js

load-flags.js

load-toolbar.js

jquery.swipebox.min.js

infinite-scroll.pkgd.min.js

front.js

bootstrap.min.js

plugins.js

custom.js

jquery.scrollbox.js

element.js

nivo-slider.css

public.css

default.css

add-to-cart.min.js

jquery.blockUI.min.js

woocommerce.min.js

jquery.cookie.min.js

cart-fragments.min.js

public.js

wp-embed.min.js

jquery.nivo.slider.pack.js

all.js

misc.css