Tools & Wizards About Us
math.violympic.vn screenshot

Report Summary

  • 26

    Performance

    Renders faster than
    46% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 89

    SEO

    Google-friendlier than
    67% of websites

math.violympic.vn

Violympic - Toán

Page Load Speed

30.7 sec in total

First Response

1.4 sec

Resources Loaded

28.7 sec

Page Rendered

541 ms

math.violympic.vn screenshot

About Website

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

violympic, giải toán trên mạng,Đại học FPT

Visit math.violympic.vn

Key Findings

We analyzed Math.violympic.vn page load time and found that the first response time was 1.4 sec and then it took 29.3 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

math.violympic.vn performance score

26

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

58/100

10%

LCP (Largest Contentful Paint)

Value10.3 s

0/100

25%

SI (Speed Index)

Value14.8 s

1/100

10%

TBT (Total Blocking Time)

Value1,390 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value19.7 s

2/100

10%

Network Requests Diagram

math.violympic.vn

1417 ms

customer.css

546 ms

reset.css

549 ms

style.css

1108 ms

kendo.common.min.css

1084 ms

Our browser made a total of 424 requests to load all elements on the main page. We found that 17% of them (74 requests) were addressed to the original Math.violympic.vn, 6% (24 requests) were made to Dsum.casalemedia.com and 4% (19 requests) were made to Bh.contextweb.com. The less responsive or slowest element that took the longest time to load (3.5 sec) relates to the external source E-vcdn.anthill.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 MB (60%)

Content Size

2.3 MB

After Optimization

922.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Math.violympic.vn main page is 2.3 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. Javascripts take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 64.4 kB

  • Original 77.2 kB
  • After minification 71.0 kB
  • After compression 12.8 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 64.4 kB or 83% of the original size.

Image Optimization

-26%

Potential reduce by 173.5 kB

  • Original 679.8 kB
  • After minification 506.2 kB

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. Obviously, Math Violympic needs image optimization as it can save up to 173.5 kB or 26% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-71%

Potential reduce by 902.1 kB

  • Original 1.3 MB
  • After minification 1.2 MB
  • After compression 368.9 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 902.1 kB or 71% of the original size.

CSS Optimization

-87%

Potential reduce by 242.6 kB

  • Original 277.6 kB
  • After minification 230.8 kB
  • After compression 35.0 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. Math.violympic.vn needs all CSS files to be minified and compressed as it can save up to 242.6 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 258 (68%)

Requests Now

379

After Optimization

121

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 379 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Math Violympic. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 70 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

math.violympic.vn

math.violympic.vn

1417 ms

customer.css

customer.css

546 ms

reset.css

reset.css

549 ms

style.css

style.css

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314 ms

cdb356ed-90d9-4e00-a921-64945f6cf0c6

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288 ms

179 ms

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286 ms

244 ms

sync

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397 ms

merge

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267 ms

sd

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184 ms

pixel.gif

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317 ms

lr.gif

lr.gif

226 ms

251 ms

sd

sd

152 ms

usermatch

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192 ms

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196 ms

bd

bd

164 ms

hbpix

hbpix

536 ms

event.gif

event.gif

167 ms

ibs:dpid=470&dpuuid=3831294530449245313

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82 ms

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rtset

80 ms

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a31fe02060ea0c3346d5ba07cc486903

324 ms

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134 ms

blank.gif

blank.gif

78 ms

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appnexus

74 ms

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contextweb

85 ms

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pp

254 ms

cs

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81 ms

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adsct

389 ms

appnexus

appnexus

139 ms

rtset

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137 ms

remarketing-list

remarketing-list

889 ms

get_device

get_device

924 ms

get_network

get_network

934 ms

pixel.htm

pixel.htm

180 ms

casaleopenrtb

casaleopenrtb

92 ms

ca

ca

235 ms

casale

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98 ms

mapuser

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cse

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84 ms

match

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73 ms

cw

cw

134 ms

contextmatch.php

contextmatch.php

124 ms

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530131980,530132042,530132075.json

824 ms

generic

generic

90 ms

crum

crum

88 ms

rum

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98 ms

ibs:dpid=13870&dpuuid=a99e446fab244f4e88fd02b7

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69 ms

rtset

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cw_match

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67 ms

context_sync

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109 ms

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73 ms

crum

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149 ms

rtset

rtset

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ddc.htm

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rtset

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ecw

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cse

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rtset

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pixel

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138 ms

contextweb

contextweb

58 ms

rtset

rtset

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rtset

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rtset

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98 ms

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102 ms

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sync

sync

36 ms

cpush

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86 ms

sd

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rtset

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81 ms

rtset

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76 ms

blank.gif

blank.gif

15 ms

rtset

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pixel

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17 ms

pixel

pixel

22 ms

rtset

rtset

14 ms

Pug

Pug

20 ms

box_19_top-right.png

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8 ms

ci.png

ci.png

5 ms

activeview

activeview

49 ms

pi

pi

808 ms

Accessibility Review

math.violympic.vn accessibility score

87

Accessibility Issues

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

Links do not have a discernible name

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

math.violympic.vn best practices score

75

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

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

math.violympic.vn SEO score

89

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

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Math.violympic.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 Math.violympic.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

math.violympic.vn

Open Graph description is not detected on the main page of Math Violympic. 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: