Tools & Wizards About Us
vungoi.vn screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

vungoi.vn

Vừng ơi - Học online toán và các môn với bài tập, lý thuyết và đề thi đầy đủ

Page Load Speed

5 sec in total

First Response

550 ms

Resources Loaded

4.3 sec

Page Rendered

162 ms

vungoi.vn screenshot

About Website

Welcome to vungoi.vn homepage info - get ready to check Vungoi best content for Vietnam right away, or after learning these important things about vungoi.vn

Luyện bài tập trắc nghiệm online, ôn lý thuyết, đề thi kiểm tra, đề học kì, thi thử online miễn phí cho tất cả các lớp với đầy đủ đáp án, lời giải chi tiết. Học trực tuyến online math - môn Toán, Lý, ...

Visit vungoi.vn

Key Findings

We analyzed Vungoi.vn page load time and found that the first response time was 550 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

vungoi.vn performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

13/100

10%

LCP (Largest Contentful Paint)

Value19.0 s

0/100

25%

SI (Speed Index)

Value17.5 s

0/100

10%

TBT (Total Blocking Time)

Value1,400 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.179

67/100

15%

TTI (Time to Interactive)

Value18.7 s

3/100

10%

Network Requests Diagram

vungoi.vn

550 ms

vungoi.vn

1300 ms

bootstrap.min.css

257 ms

font-awesome.min.css

512 ms

home.842460521668c2c28e39.css

1016 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that 46% of them (21 requests) were addressed to the original Vungoi.vn, 28% (13 requests) were made to Cdn.vungoi.vn and 7% (3 requests) were made to Securepubads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Vungoi.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 71.7 kB (39%)

Content Size

182.5 kB

After Optimization

110.8 kB

  • HTML
  • JavaScript

In fact, the total size of Vungoi.vn main page is 182.5 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. 60% of websites need less resources to load. Javascripts take 92.7 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 71.5 kB

  • Original 89.8 kB
  • After minification 89.1 kB
  • After compression 18.2 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. 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 71.5 kB or 80% of the original size.

JavaScript Optimization

-0%

Potential reduce by 191 B

  • Original 92.7 kB
  • After minification 92.7 kB
  • After compression 92.5 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.

Requests Breakdown

Number of requests can be reduced by 14 (34%)

Requests Now

41

After Optimization

27

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vungoi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

vungoi.vn

vungoi.vn

550 ms

vungoi.vn

vungoi.vn

1300 ms

bootstrap.min.css

bootstrap.min.css

257 ms

font-awesome.min.css

font-awesome.min.css

512 ms

home.842460521668c2c28e39.css

home.842460521668c2c28e39.css

1016 ms

adsbygoogle.js

adsbygoogle.js

77 ms

gpt.js

gpt.js

33 ms

DMCABadgeHelper.min.js

DMCABadgeHelper.min.js

65 ms

jquery_2.min.js

jquery_2.min.js

1013 ms

loglevel.min.js

loglevel.min.js

759 ms

home.842460521668c2c28e39.js

home.842460521668c2c28e39.js

1794 ms

vendor_min.b86ccc3ee2bcb6d36081.js

vendor_min.b86ccc3ee2bcb6d36081.js

1136 ms

MathJax.js

MathJax.js

31 ms

sdk.js

sdk.js

118 ms

1635911659118_cu_13.png

1635911659118_cu_13.png

1183 ms

dmca_protected_sml_120m.png

dmca_protected_sml_120m.png

106 ms

1635911635068_cu_12.png

1635911635068_cu_12.png

960 ms

1635911610570_cu_11.png

1635911610570_cu_11.png

1205 ms

1635911586946_cu_10.png

1635911586946_cu_10.png

972 ms

1635911551170_cu_9.png

1635911551170_cu_9.png

982 ms

1635911531926_cu_8.png

1635911531926_cu_8.png

993 ms

1635911493955_cu_7.png

1635911493955_cu_7.png

1201 ms

1635911403633_cu_6.png

1635911403633_cu_6.png

1204 ms

1635911292236_cu_5.png

1635911292236_cu_5.png

1218 ms

1635911205350_cu_4.png

1635911205350_cu_4.png

1230 ms

1635911166718_cu_3.png

1635911166718_cu_3.png

1405 ms

1635909526523_cu_2.png

1635909526523_cu_2.png

1433 ms

1635909455400_cu_1.png

1635909455400_cu_1.png

1435 ms

package_vip.png

package_vip.png

255 ms

bg-header.png

bg-header.png

255 ms

image_2022_01_28T03_04_24_902Z.png

image_2022_01_28T03_04_24_902Z.png

257 ms

doilop.png

doilop.png

258 ms

banner-right_new.png

banner-right_new.png

256 ms

vnexpress.png

vnexpress.png

509 ms

call.png

call.png

508 ms

logo.gif

logo.gif

508 ms

pubads_impl_2022020101.js

pubads_impl_2022020101.js

68 ms

ppub_config

ppub_config

147 ms

Roboto-Regular.woff

Roboto-Regular.woff

670 ms

Roboto-Bold.woff

Roboto-Bold.woff

921 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

910 ms

sdk.js

sdk.js

14 ms

TeX-MML-AM_CHTML.js

TeX-MML-AM_CHTML.js

22 ms

69 ms

7 ms

react-redux-toastr.min.css

react-redux-toastr.min.css

256 ms

Accessibility Review

vungoi.vn accessibility score

66

Accessibility Issues

Names and labels

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.

Impact

Issue

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

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

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

Tables and lists

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

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

vungoi.vn best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

vungoi.vn SEO score

86

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

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 Vungoi.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 Vungoi.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

vungoi.vn

Open Graph data is detected on the main page of Vungoi. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: