Tools & Wizards About Us
classs.ru screenshot

Report Summary

  • 93

    Performance

    Renders faster than
    92% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

classs.ru

Учебный центр - Корпоративное обучение - Семинары и бизнес тренинги продаж, управление персоналом, тренинги

Page Load Speed

3.6 sec in total

First Response

773 ms

Resources Loaded

2.7 sec

Page Rendered

156 ms

classs.ru screenshot

About Website

Welcome to classs.ru homepage info - get ready to check Classs best content for Russia right away, or after learning these important things about classs.ru

Учебный центр «Бизнес Класс» проводит огромное количество курсов, семинаров и бизнес тренингов продаж. Кроме указанных тренингов школа бизнеса занимается корпоративным обучением персонала и руководите...

Visit classs.ru

Key Findings

We analyzed Classs.ru page load time and found that the first response time was 773 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

classs.ru performance score

93

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

91/100

10%

LCP (Largest Contentful Paint)

Value1.7 s

99/100

25%

SI (Speed Index)

Value3.0 s

93/100

10%

TBT (Total Blocking Time)

Value150 ms

94/100

30%

CLS (Cumulative Layout Shift)

Value0.009

100/100

15%

TTI (Time to Interactive)

Value5.6 s

69/100

10%

Network Requests Diagram

classs.ru

773 ms

main.css

385 ms

main.js

513 ms

wg.js

638 ms

rotate_top.js

639 ms

Our browser made a total of 62 requests to load all elements on the main page. We found that 85% of them (53 requests) were addressed to the original Classs.ru, 3% (2 requests) were made to Counter.yadro.ru and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (773 ms) belongs to the original domain Classs.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 33.4 kB (10%)

Content Size

326.9 kB

After Optimization

293.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Classs.ru main page is 326.9 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. 25% of websites need less resources to load. Javascripts take 230.2 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 20.8 kB

  • Original 28.5 kB
  • After minification 27.5 kB
  • After compression 7.6 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. 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 73% of the original size.

Image Optimization

-13%

Potential reduce by 8.3 kB

  • Original 61.9 kB
  • After minification 53.6 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, Classs needs image optimization as it can save up to 8.3 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 3.0 kB

  • Original 230.2 kB
  • After minification 230.1 kB
  • After compression 227.2 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

-20%

Potential reduce by 1.3 kB

  • Original 6.3 kB
  • After minification 6.2 kB
  • After compression 5.0 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. Classs.ru needs all CSS files to be minified and compressed as it can save up to 1.3 kB or 20% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (66%)

Requests Now

59

After Optimization

20

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Classs. 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

classs.ru

classs.ru

773 ms

main.css

main.css

385 ms

main.js

main.js

513 ms

wg.js

wg.js

638 ms

rotate_top.js

rotate_top.js

639 ms

swfobject.js

swfobject.js

639 ms

api.js

api.js

36 ms

watch.js

watch.js

1 ms

h5.jpg

h5.jpg

250 ms

header-bg.gif

header-bg.gif

134 ms

header-left.jpg

header-left.jpg

133 ms

header-logo.gif

header-logo.gif

132 ms

header-slogan.gif

header-slogan.gif

132 ms

wrapper-bg.gif

wrapper-bg.gif

254 ms

h1top.jpg

h1top.jpg

255 ms

h1bot.jpg

h1bot.jpg

382 ms

linkbutton.gif

linkbutton.gif

259 ms

menu-top-f.gif

menu-top-f.gif

258 ms

menu-bottom-f.gif

menu-bottom-f.gif

261 ms

menu-li.gif

menu-li.gif

380 ms

menu-top-s.gif

menu-top-s.gif

383 ms

menu-bottom-s.gif

menu-bottom-s.gif

385 ms

subscribe-top.gif

subscribe-top.gif

386 ms

subscribe-bottom.gif

subscribe-bottom.gif

388 ms

add2fav.gif

add2fav.gif

504 ms

smallnav-home.gif

smallnav-home.gif

505 ms

smallnav-mail.gif

smallnav-mail.gif

509 ms

smallnav-print.gif

smallnav-print.gif

509 ms

smallnav-search.gif

smallnav-search.gif

510 ms

contacts-top.gif

contacts-top.gif

512 ms

contacts-bottom.gif

contacts-bottom.gif

630 ms

info-rules.gif

info-rules.gif

630 ms

newbook.gif

newbook.gif

257 ms

syntone-bk.gif

syntone-bk.gif

255 ms

contacts-phone.gif

contacts-phone.gif

256 ms

contacts-mail.gif

contacts-mail.gif

357 ms

contacts-contacts.gif

contacts-contacts.gif

381 ms

subscribe-head.gif

subscribe-head.gif

383 ms

subscribe-btn.gif

subscribe-btn.gif

383 ms

clubs.gif

clubs.gif

422 ms

info-trainings.gif

info-trainings.gif

481 ms

recaptcha__en.js

recaptcha__en.js

31 ms

info-top.gif

info-top.gif

608 ms

info-bottom.gif

info-bottom.gif

609 ms

footer-bg.gif

footer-bg.gif

609 ms

contacts-top.gif

contacts-top.gif

481 ms

contacts-bottom.gif

contacts-bottom.gif

483 ms

hit

hit

259 ms

ga.js

ga.js

50 ms

__utm.gif

__utm.gif

12 ms

hit

hit

523 ms

404.html

404.html

373 ms

yandex_search.png

yandex_search.png

573 ms

print.css

print.css

129 ms

ie.css

ie.css

128 ms

404.html

404.html

145 ms

404.html

404.html

137 ms

404.html

404.html

142 ms

404.html

404.html

139 ms

404.html

404.html

143 ms

counter2

counter2

127 ms

404.html

404.html

143 ms

Accessibility Review

classs.ru accessibility score

69

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

classs.ru best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

classs.ru SEO score

54

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

High

Document uses plugins

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    RU

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Classs.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it matches the claimed language. Our system also found out that Classs.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

classs.ru

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