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21vk.biz screenshot

Report Summary

  • 7

    Performance

    Renders faster than
    22% of other websites

  • 42

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 62

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

21vk.biz

Бизнес-школа XXI ВЕК-КОНСАЛТ

Page Load Speed

6.2 sec in total

First Response

595 ms

Resources Loaded

5.3 sec

Page Rendered

229 ms

21vk.biz screenshot

About Website

Welcome to 21vk.biz homepage info - get ready to check 21 Vk best content for Russia right away, or after learning these important things about 21vk.biz

2 программы MBA международного стандарта, более 50 курсов для руководителей и специалистов, корпоративное обучение ✔ Международная академическая мобильность

Visit 21vk.biz

Key Findings

We analyzed 21vk.biz page load time and found that the first response time was 595 ms and then it took 5.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

21vk.biz performance score

7

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

12/100

10%

LCP (Largest Contentful Paint)

Value20.5 s

0/100

25%

SI (Speed Index)

Value16.4 s

1/100

10%

TBT (Total Blocking Time)

Value2,270 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.42

23/100

15%

TTI (Time to Interactive)

Value18.1 s

4/100

10%

Network Requests Diagram

21vk.biz

595 ms

www.21vk.biz

1334 ms

jquery-1.8.3.js

17 ms

jquery.min.js

34 ms

cr.php

639 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 80% of them (39 requests) were addressed to the original 21vk.biz, 8% (4 requests) were made to Mc.yandex.ru and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain 21vk.biz.

Page Optimization Overview & Recommendations

Page size can be reduced by 779.6 kB (23%)

Content Size

3.5 MB

After Optimization

2.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 21vk.biz main page is 3.5 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. 25% of websites need less resources to load. Images take 2.8 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 20.8 kB

  • Original 27.1 kB
  • After minification 26.8 kB
  • After compression 6.4 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 20.8 kB or 77% of the original size.

Image Optimization

-11%

Potential reduce by 311.6 kB

  • Original 2.8 MB
  • After minification 2.5 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. Obviously, 21 Vk needs image optimization as it can save up to 311.6 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-73%

Potential reduce by 374.3 kB

  • Original 511.4 kB
  • After minification 474.4 kB
  • After compression 137.1 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 374.3 kB or 73% of the original size.

CSS Optimization

-87%

Potential reduce by 73.0 kB

  • Original 84.1 kB
  • After minification 64.2 kB
  • After compression 11.1 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. 21vk.biz needs all CSS files to be minified and compressed as it can save up to 73.0 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (40%)

Requests Now

45

After Optimization

27

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 21 Vk. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

21vk.biz

21vk.biz

595 ms

www.21vk.biz

www.21vk.biz

1334 ms

jquery-1.8.3.js

jquery-1.8.3.js

17 ms

jquery.min.js

jquery.min.js

34 ms

cr.php

cr.php

639 ms

cr.php

cr.php

1274 ms

pagination-months.js

pagination-months.js

261 ms

logo_n.png

logo_n.png

163 ms

logotext1_red.png

logotext1_red.png

161 ms

29_pthrf_0_400.jpg

29_pthrf_0_400.jpg

796 ms

17_pthrf_0_400.jpg

17_pthrf_0_400.jpg

1741 ms

19_pthrf_0_400.jpg

19_pthrf_0_400.jpg

1917 ms

18_pthrf_0_400.jpg

18_pthrf_0_400.jpg

1863 ms

15_pthrf_0_400.jpg

15_pthrf_0_400.jpg

1751 ms

16_pthrf_0_400.jpg

16_pthrf_0_400.jpg

2232 ms

25_pthrf_0_400.jpg

25_pthrf_0_400.jpg

1125 ms

27_pthrf_0_400.jpg

27_pthrf_0_400.jpg

1606 ms

slidergradl.png

slidergradl.png

1767 ms

slidergradr.png

slidergradr.png

1900 ms

sliderlinks.png

sliderlinks.png

1912 ms

icon_anons.png

icon_anons.png

1928 ms

paginatora.png

paginatora.png

2023 ms

910_pthrf_0_176.jpg

910_pthrf_0_176.jpg

2062 ms

icon_news.png

icon_news.png

2074 ms

submit.png

submit.png

2077 ms

icon_video.png

icon_video.png

2090 ms

748_pthrf_0_176.jpg

748_pthrf_0_176.jpg

2185 ms

videobig.png

videobig.png

2223 ms

videosmall.png

videosmall.png

2235 ms

588_pthrf_0_176.jpg

588_pthrf_0_176.jpg

2240 ms

712_pthrf_0_176.jpg

712_pthrf_0_176.jpg

2253 ms

713_pthrf_0_176.jpg

713_pthrf_0_176.jpg

2346 ms

icon_publications.png

icon_publications.png

2382 ms

bottombg.png

bottombg.png

2391 ms

toplinks.png

toplinks.png

2394 ms

facebook.png

facebook.png

2400 ms

youtube.png

youtube.png

2415 ms

watch.js

watch.js

169 ms

ga.js

ga.js

24 ms

hit

hit

393 ms

exo2.0-light-webfont.woff

exo2.0-light-webfont.woff

2482 ms

exo2.0-regular-webfont.woff

exo2.0-regular-webfont.woff

2517 ms

exo2.0-medium-webfont.woff

exo2.0-medium-webfont.woff

2525 ms

franklingothicbookc.woff

franklingothicbookc.woff

2533 ms

__utm.gif

__utm.gif

25 ms

watch.js

watch.js

436 ms

hit

hit

127 ms

advert.gif

advert.gif

85 ms

1

1

85 ms

Accessibility Review

21vk.biz accessibility score

42

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.

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

21vk.biz best practices score

62

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

High

Registers an unload listener

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

21vk.biz SEO score

85

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

    RU

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 21vk.biz can be misinterpreted by Google and other search engines. Our service has detected that Russian 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 21vk.biz 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

21vk.biz

Open Graph description is not detected on the main page of 21 Vk. 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: