Tools & Wizards About Us
cungthi.online screenshot

Report Summary

  • 8

    Performance

    Renders faster than
    22% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

cungthi.online

Website thi trắc nghiệm và tạo đề thi trắc nghiệm online | cungthi.vn

Page Load Speed

17.2 sec in total

First Response

551 ms

Resources Loaded

15.9 sec

Page Rendered

716 ms

cungthi.online screenshot

About Website

Welcome to cungthi.online homepage info - get ready to check Cung Thi best content for Vietnam right away, or after learning these important things about cungthi.online

Tổng hợp hàng nghìn đề thi trắc nghiệm các môn toán, hóa , lý, sinh ... Bám sát nội dung của bộ GDDT đưa ra. Cung cấp các chức năng tốt nhất cho giáo viên có thể dễ dàng tạo đề thi trắc nghiệm và xuất...

Visit cungthi.online

Key Findings

We analyzed Cungthi.online page load time and found that the first response time was 551 ms and then it took 16.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

cungthi.online performance score

8

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

6/100

10%

LCP (Largest Contentful Paint)

Value21.4 s

0/100

25%

SI (Speed Index)

Value29.8 s

0/100

10%

TBT (Total Blocking Time)

Value9,300 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.249

50/100

15%

TTI (Time to Interactive)

Value54.1 s

0/100

10%

Network Requests Diagram

cungthi.online

551 ms

cungthi.online

3527 ms

font-awesome.css.xhtml

1357 ms

omnifaces.js.xhtml

1069 ms

bootstrap.css.xhtml

3844 ms

Our browser made a total of 147 requests to load all elements on the main page. We found that 65% of them (96 requests) were addressed to the original Cungthi.online, 8% (12 requests) were made to Cdn.taboola.com and 7% (10 requests) were made to Images.taboola.com. The less responsive or slowest element that took the longest time to load (6.6 sec) belongs to the original domain Cungthi.online.

Page Optimization Overview & Recommendations

Page size can be reduced by 558.1 kB (9%)

Content Size

5.9 MB

After Optimization

5.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cungthi.online main page is 5.9 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 4.6 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 314.4 kB

  • Original 375.0 kB
  • After minification 322.9 kB
  • After compression 60.6 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 52.1 kB, which is 14% 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 314.4 kB or 84% of the original size.

Image Optimization

-4%

Potential reduce by 188.6 kB

  • Original 4.6 MB
  • After minification 4.4 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. Cung Thi images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 24.8 kB

  • Original 780.3 kB
  • After minification 779.9 kB
  • After compression 755.5 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.

CSS Optimization

-15%

Potential reduce by 30.4 kB

  • Original 197.2 kB
  • After minification 197.2 kB
  • After compression 166.8 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. Cungthi.online needs all CSS files to be minified and compressed as it can save up to 30.4 kB or 15% of the original size.

Requests Breakdown

Number of requests can be reduced by 80 (57%)

Requests Now

140

After Optimization

60

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 140 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cung Thi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 59 to 1 for JavaScripts and from 23 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cungthi.online

cungthi.online

551 ms

cungthi.online

cungthi.online

3527 ms

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font-awesome.css.xhtml

1357 ms

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1069 ms

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732 ms

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2833 ms

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default-user=s96-c

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19 ms

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958 ms

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2054 ms

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103 ms

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6326 ms

loader.js

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186 ms

TeX-AMS-MML_HTMLorMML.js

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200 ms

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119 ms

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4180 ms

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4995 ms

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3560 ms

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4884 ms

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4981 ms

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94 ms

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72 ms

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57 ms

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Accessibility Review

cungthi.online accessibility score

70

Accessibility Issues

ARIA

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.

Impact

Issue

High

[aria-*] attributes do not match their roles

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.

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

<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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

cungthi.online best practices score

58

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

Displays images with incorrect aspect ratio

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

cungthi.online SEO score

92

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

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 Cungthi.online 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 Cungthi.online 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

cungthi.online

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