Access e-space.vn. Tiếng Anh Trực tuyến 1 Thầy 1 Trò | Hệ thống web Học tập riêng

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value13.7 s

0/100

25%

SI (Speed Index)

Value20.5 s

0/100

10%

TBT (Total Blocking Time)

Value5,800 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.088

92/100

15%

TTI (Time to Interactive)

Value44.4 s

0/100

10%

e-space.vn

790 ms

e-space.vn

2144 ms

all.min.css

66 ms

ztracker.js

2870 ms

css

95 ms

Our browser made a total of 132 requests to load all elements on the main page. We found that 72% of them (95 requests) were addressed to the original E-space.vn, 6% (8 requests) were made to Youtube.com and 4% (5 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (3.4 sec) belongs to the original domain E-space.vn.

Content Size

7.4 MB

After Optimization

6.7 MB

In fact, the total size of E-space.vn main page is 7.4 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. Only a small number of websites need less resources to load. Images take 6.9 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 83.5 kB

Original 98.2 kB
After minification 66.5 kB
After compression 14.7 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. This page needs HTML code to be minified as it can gain 31.7 kB, which is 32% 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 83.5 kB or 85% of the original size.

Image Optimization

-9%

Potential reduce by 605.7 kB

Original 6.9 MB
After minification 6.3 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. E Space images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 15.7 kB

Original 301.7 kB
After minification 301.6 kB
After compression 286.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-4%

Potential reduce by 3.5 kB

Original 97.6 kB
After minification 97.3 kB
After compression 94.1 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. E-space.vn has all CSS files already compressed.

Requests Now

124

After Optimization

The browser has sent 124 CSS, Javascripts, AJAX and image requests in order to completely render the main page of E Space. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 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 semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

Buttons do not have an accessible name

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 legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

Areas of Improvement

High

Does not use HTTPS

High

Requests the notification permission on page load

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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

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

Language and Encoding

Language Detected

VI
Language Claimed

VI
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise E-space.vn can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it matches the claimed language. Our system also found out that E-space.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

e-space.vn

Open Graph description is not detected on the main page of E Space. 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

Tiếng Anh Trực tuyến 1 Thầy 1 Trò | Hệ thống web Học tập riêng | Quản lý Chất lượng 4.0

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

e-space.vn

e-space.vn

all.min.css

ztracker.js

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

e-space.vn

e-space.vn

all.min.css

ztracker.js

css

vi.css

bootstrap.css

font-awesome.min.css

styles.css

jquery.bxslider.css

jquery.fancybox.css

jquery.min.js

scripts.js

platform.js

js

client

bootstrap.js

jquery.fancybox.pack.js

jquery.bxslider.js

jquery.lbslider.js

colorbox.css

jquery.colorbox.js

phone.css

up.css

up.js

firebase-cdn.js

analytics.js

fbevents.js

gtm.js

retargeting.js

events.js

apple.png+@2x-new.png

google.png+@2x-new.png

windows-badge-128x128.png

viettalk-logo.png

english.png

vietnam.png

logo_new.png

icon-time.png

contest-logo-2023.png

new.png

hamburger.png

close.png