Tools & Wizards About Us
polycent.ru screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    46% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 87

    SEO

    Google-friendlier than
    65% of websites

polycent.ru

Детский образовательный центр: Технические кружки, IT курсы для курсы для детей ☰ Polycent

Page Load Speed

6.8 sec in total

First Response

633 ms

Resources Loaded

4.9 sec

Page Rendered

1.3 sec

polycent.ru screenshot

About Website

Visit polycent.ru now to see the best up-to-date Polycent content for Russia and also check out these interesting facts you probably never knew about polycent.ru

Развивающие курсы для детей по программированию, информатике, робототехнике, инженерному делу, кружки для дошкольников в Polycent ➤ Увлекательное обучение! Оставьте заявку на индивидуальный подбор кур...

Visit polycent.ru

Key Findings

We analyzed Polycent.ru page load time and found that the first response time was 633 ms and then it took 6.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

polycent.ru performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

53/100

10%

LCP (Largest Contentful Paint)

Value12.0 s

0/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value2,210 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.018

100/100

15%

TTI (Time to Interactive)

Value13.7 s

10/100

10%

Network Requests Diagram

polycent.ru

633 ms

polycent.ru

653 ms

common.css

156 ms

bootstrap-select.min.css

57 ms

plyr.css

59 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 50% of them (26 requests) were addressed to the original Polycent.ru, 13% (7 requests) were made to Cdnjs.cloudflare.com and 10% (5 requests) were made to Yastatic.net. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source Yastatic.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 88.5 kB (5%)

Content Size

1.8 MB

After Optimization

1.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Polycent.ru main page is 1.8 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. 30% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 45.4 kB

  • Original 57.4 kB
  • After minification 48.0 kB
  • After compression 12.0 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 9.4 kB, which is 16% 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 45.4 kB or 79% of the original size.

Image Optimization

-2%

Potential reduce by 23.8 kB

  • Original 1.3 MB
  • After minification 1.3 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. Polycent images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 16.6 kB

  • Original 351.7 kB
  • After minification 345.1 kB
  • After compression 335.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-13%

Potential reduce by 2.7 kB

  • Original 20.5 kB
  • After minification 20.3 kB
  • After compression 17.8 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. Polycent.ru needs all CSS files to be minified and compressed as it can save up to 2.7 kB or 13% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (81%)

Requests Now

48

After Optimization

9

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Polycent. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 32 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

polycent.ru

polycent.ru

633 ms

polycent.ru

polycent.ru

653 ms

common.css

common.css

156 ms

bootstrap-select.min.css

bootstrap-select.min.css

57 ms

plyr.css

plyr.css

59 ms

big.table.css

big.table.css

298 ms

jquery.min.js

jquery.min.js

54 ms

default.css

default.css

432 ms

jquery.jgrowl.min.css

jquery.jgrowl.min.css

508 ms

default.css

default.css

511 ms

api.js

api.js

88 ms

lazyload.min.js

lazyload.min.js

518 ms

605 ms

popper.min.js

popper.min.js

53 ms

bootstrap.min.js

bootstrap.min.js

63 ms

bootstrap-select.min.js

bootstrap-select.min.js

58 ms

defaults-ru_RU.min.js

defaults-ru_RU.min.js

219 ms

device.min.js

device.min.js

57 ms

slick.min.js

slick.min.js

46 ms

plyr.js

plyr.js

70 ms

map.js

map.js

518 ms

timer.js

timer.js

519 ms

checkDevice.js

checkDevice.js

569 ms

jquery.validate.min.js

jquery.validate.min.js

59 ms

app.js

app.js

637 ms

common.js

common.js

637 ms

jquery.cookie.min.js

jquery.cookie.min.js

648 ms

jquery.maskedinput.min.js

jquery.maskedinput.min.js

47 ms

metrikagoals.js

metrikagoals.js

650 ms

sweetalert2.all.min.js

sweetalert2.all.min.js

719 ms

default.min.js

default.min.js

700 ms

default.js

default.js

765 ms

jquery.jgrowl.min.js

jquery.jgrowl.min.js

765 ms

message_settings.js

message_settings.js

776 ms

default.js

default.js

782 ms

recaptcha__en.js

recaptcha__en.js

22 ms

jquery.jgrowl.min.css

jquery.jgrowl.min.css

330 ms

onlinedod1.jpg

onlinedod1.jpg

926 ms

banner01.jpg

banner01.jpg

645 ms

icomoon.ttf

icomoon.ttf

285 ms

logo_white.svg

logo_white.svg

127 ms

tag.js

tag.js

965 ms

634 ms

b24f513706454b8a88be.css

b24f513706454b8a88be.css

530 ms

239 ms

e690f6dd33c8870d6972.yandex.ru.js

e690f6dd33c8870d6972.yandex.ru.js

845 ms

2343feb4aaeecff3cdc3.yandex.ru.js

2343feb4aaeecff3cdc3.yandex.ru.js

920 ms

advert.gif

advert.gif

537 ms

watch.js

watch.js

11 ms

full-d4970f46344c5e9889e597ed64f3cc18926d2def.js

full-d4970f46344c5e9889e597ed64f3cc18926d2def.js

1416 ms

logo-web-ru-80x40.svg

logo-web-ru-80x40.svg

402 ms

1

1

133 ms

Accessibility Review

polycent.ru accessibility score

88

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.

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 IDs are not unique

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

Best Practices

polycent.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

High

Page has valid source maps

SEO Factors

polycent.ru SEO score

87

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

    RU

  • Encoding

    UTF-8

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

polycent.ru

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