Tools & Wizards About Us
khcenter.ru screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

khcenter.ru

Курсы изучения английского, китайского и пр. для начинающих и продвинутых детей и взрослых. Школа китайского языка в Волгограде. ЕГЭ, ОГЭ по английско...

Page Load Speed

5.3 sec in total

First Response

540 ms

Resources Loaded

4.6 sec

Page Rendered

183 ms

khcenter.ru screenshot

About Website

Click here to check amazing Khcenter content. Otherwise, check out these important facts you probably never knew about khcenter.ru

Центр изучения иностранных языков. Мы поможем вам овладеть английским, китайским и прочими языками в совершенстве. Лучшие преподаватели, высокое качество.

Visit khcenter.ru

Key Findings

We analyzed Khcenter.ru page load time and found that the first response time was 540 ms and then it took 4.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

khcenter.ru performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

48/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

77/100

25%

SI (Speed Index)

Value8.4 s

19/100

10%

TBT (Total Blocking Time)

Value6,440 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.03

100/100

15%

TTI (Time to Interactive)

Value27.9 s

0/100

10%

Network Requests Diagram

khcenter.ru

540 ms

css_rEI_5cK_B9hB4So2yZUtr5weuEV3heuAllCDE6XsIkI.css

134 ms

css_7l1sELInCOKeS9Ox5Uim1YpAqzKym6ZI7SCLWPbypCA.css

265 ms

css_PGbJgHCUCBf4dg7K9Kt8aAwsApndP4GZ9RuToPy3-Fk.css

264 ms

font-awesome.min.css

20 ms

Our browser made a total of 86 requests to load all elements on the main page. We found that 16% of them (14 requests) were addressed to the original Khcenter.ru, 51% (44 requests) were made to St6-21.vk.com and 8% (7 requests) were made to Vk.com. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source St6-21.vk.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 596.1 kB (20%)

Content Size

3.0 MB

After Optimization

2.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Khcenter.ru main page is 3.0 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 2.2 MB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 27.6 kB

  • Original 38.2 kB
  • After minification 35.6 kB
  • After compression 10.7 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. 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 27.6 kB or 72% of the original size.

Image Optimization

-72%

Potential reduce by 155.9 kB

  • Original 216.1 kB
  • After minification 60.2 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, Khcenter needs image optimization as it can save up to 155.9 kB or 72% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-15%

Potential reduce by 339.6 kB

  • Original 2.2 MB
  • After minification 2.2 MB
  • After compression 1.9 MB

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 339.6 kB or 15% of the original size.

CSS Optimization

-14%

Potential reduce by 73.0 kB

  • Original 539.1 kB
  • After minification 539.1 kB
  • After compression 466.1 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. Khcenter.ru needs all CSS files to be minified and compressed as it can save up to 73.0 kB or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 64 (81%)

Requests Now

79

After Optimization

15

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 79 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Khcenter. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 41 to 1 for JavaScripts and from 19 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

khcenter.ru

khcenter.ru

540 ms

css_rEI_5cK_B9hB4So2yZUtr5weuEV3heuAllCDE6XsIkI.css

css_rEI_5cK_B9hB4So2yZUtr5weuEV3heuAllCDE6XsIkI.css

134 ms

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265 ms

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264 ms

font-awesome.min.css

font-awesome.min.css

20 ms

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266 ms

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451 ms

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282 ms

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287 ms

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395 ms

openapi.js

openapi.js

243 ms

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MyLogo_grey3.png

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531 ms

theme-sprite.png

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133 ms

info.png

info.png

133 ms

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149 ms

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141 ms

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265 ms

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Accessibility Review

khcenter.ru accessibility score

68

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

[role] values are not valid

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

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

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

khcenter.ru 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

SEO Factors

khcenter.ru SEO score

90

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

    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 Khcenter.ru 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 Khcenter.ru 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

khcenter.ru

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