Tools & Wizards About Us
elcentro.ru screenshot

Report Summary

  • 26

    Performance

    Renders faster than
    45% of other websites

  • 65

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

elcentro.ru

Школа аргентинского танго для начинающих в Москве

Page Load Speed

8.5 sec in total

First Response

539 ms

Resources Loaded

6.5 sec

Page Rendered

1.5 sec

elcentro.ru screenshot

About Website

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

Школа аргентинского танго для начинающих взрослых в Москве: групповые и индивидуальные занятия, удобное расписание, сертификаты. Запишитесь на бесплатный открытый урок!

Visit elcentro.ru

Key Findings

We analyzed Elcentro.ru page load time and found that the first response time was 539 ms and then it took 7.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

elcentro.ru performance score

26

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

7/100

10%

LCP (Largest Contentful Paint)

Value9.7 s

0/100

25%

SI (Speed Index)

Value11.7 s

4/100

10%

TBT (Total Blocking Time)

Value480 ms

59/100

30%

CLS (Cumulative Layout Shift)

Value0.252

49/100

15%

TTI (Time to Interactive)

Value21.3 s

1/100

10%

Network Requests Diagram

elcentro.ru

539 ms

elcentro.ru

915 ms

styles.bbd370b761f90ab55fbeaab17306b4d6.css

745 ms

font-awesome.min.css

515 ms

jquery.min.js

18 ms

Our browser made a total of 106 requests to load all elements on the main page. We found that 81% of them (86 requests) were addressed to the original Elcentro.ru, 6% (6 requests) were made to Api-maps.yandex.ru and 4% (4 requests) were made to Yastatic.net. The less responsive or slowest element that took the longest time to load (4.3 sec) belongs to the original domain Elcentro.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.5 MB (6%)

Content Size

41.2 MB

After Optimization

38.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Elcentro.ru main page is 41.2 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. 55% of websites need less resources to load. Images take 40.3 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 63.5 kB

  • Original 79.7 kB
  • After minification 77.1 kB
  • After compression 16.3 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 63.5 kB or 80% of the original size.

Image Optimization

-5%

Potential reduce by 1.8 MB

  • Original 40.3 MB
  • After minification 38.4 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. Elcentro images are well optimized though.

JavaScript Optimization

-53%

Potential reduce by 239.5 kB

  • Original 456.0 kB
  • After minification 453.0 kB
  • After compression 216.5 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 239.5 kB or 53% of the original size.

CSS Optimization

-98%

Potential reduce by 399.6 kB

  • Original 408.2 kB
  • After minification 32.7 kB
  • After compression 8.6 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. Elcentro.ru needs all CSS files to be minified and compressed as it can save up to 399.6 kB or 98% of the original size.

Requests Breakdown

Number of requests can be reduced by 25 (29%)

Requests Now

87

After Optimization

62

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Elcentro. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

elcentro.ru

elcentro.ru

539 ms

elcentro.ru

elcentro.ru

915 ms

styles.bbd370b761f90ab55fbeaab17306b4d6.css

styles.bbd370b761f90ab55fbeaab17306b4d6.css

745 ms

font-awesome.min.css

font-awesome.min.css

515 ms

jquery.min.js

jquery.min.js

18 ms

popper.min.js

popper.min.js

23 ms

swiper.min.js

swiper.min.js

759 ms

jquery.matchHeight-min.js

jquery.matchHeight-min.js

385 ms

mmenu-light.js

mmenu-light.js

388 ms

mmenu-light.polyfills.js

mmenu-light.polyfills.js

397 ms

scripts.js

scripts.js

892 ms

jquery.total-storage.min.js

jquery.total-storage.min.js

516 ms

jquery.fancybox.min.js

jquery.fancybox.min.js

757 ms

common.js

common.js

757 ms

body_bg.png

body_bg.png

640 ms

logo.svg

logo.svg

126 ms

1_glavnaya.jpg

1_glavnaya.jpg

398 ms

elcentro-text.png

elcentro-text.png

134 ms

2_ishete_krasivoe_hobby.jpg

2_ishete_krasivoe_hobby.jpg

524 ms

3_tango_in_school_elcententro_1.jpg

3_tango_in_school_elcententro_1.jpg

286 ms

3_tango_in_school_elcententro_2.jpg

3_tango_in_school_elcententro_2.jpg

285 ms

3_tango_in_school_elcententro_3.jpg

3_tango_in_school_elcententro_3.jpg

537 ms

4_tango_unique_1.png

4_tango_unique_1.png

612 ms

4_tango_unique_2.jpg

4_tango_unique_2.jpg

432 ms

4_tango_unique_3.png

4_tango_unique_3.png

435 ms

4_tango_unique_mobile.jpg

4_tango_unique_mobile.jpg

536 ms

video-bg.png

video-bg.png

718 ms

play.png

play.png

569 ms

6_img-3-new.jpg

6_img-3-new.jpg

790 ms

7_urovni_grupp_1.jpg

7_urovni_grupp_1.jpg

684 ms

7_urovni_grupp_2.jpg

7_urovni_grupp_2.jpg

936 ms

7_urovni_grupp_3.jpg

7_urovni_grupp_3.jpg

838 ms

7_urovni_grupp_4.jpg

7_urovni_grupp_4.jpg

869 ms

7_urovni_grupp_5.jpg

7_urovni_grupp_5.jpg

828 ms

7_urovni_grupp_6.jpg

7_urovni_grupp_6.jpg

858 ms

7_urovni_grupp_7.jpg

7_urovni_grupp_7.jpg

925 ms

8_priyatnaya_atmosfera_1.jpg

8_priyatnaya_atmosfera_1.jpg

2507 ms

8_priyatnaya_atmosfera_2.jpg

8_priyatnaya_atmosfera_2.jpg

1022 ms

8_priyatnaya_atmosfera_3.jpg

8_priyatnaya_atmosfera_3.jpg

1021 ms

8_priyatnaya_atmosfera_4.jpg

8_priyatnaya_atmosfera_4.jpg

1032 ms

8_priyatnaya_atmosfera_5.jpg

8_priyatnaya_atmosfera_5.jpg

4328 ms

image-19-08-21-06-50_small_edit.png

image-19-08-21-06-50_small_edit.png

1079 ms

image-20-08-21-05-10-2_small.png

image-20-08-21-05-10-2_small.png

1154 ms

image-20-08-21-05-3-small.png

image-20-08-21-05-3-small.png

1161 ms

1.vlad_chernjakov_obrezannaja_dlja_saita_%E2%80%94_kopija.jpg

1.vlad_chernjakov_obrezannaja_dlja_saita_%E2%80%94_kopija.jpg

1334 ms

2.ksenija_chichaeva_21.21.12.jpg

2.ksenija_chichaeva_21.21.12.jpg

1317 ms

dropdown-toggle.svg

dropdown-toggle.svg

619 ms

list-decor.png

list-decor.png

641 ms

circle.png

circle.png

641 ms

owl-prev.png

owl-prev.png

644 ms

owl-next.png

owl-next.png

646 ms

elcentro-text.png

elcentro-text.png

744 ms

price__item-header_decor.png

price__item-header_decor.png

745 ms

minus.png

minus.png

770 ms

plus.png

plus.png

768 ms

555.jpg

555.jpg

1272 ms

4._natalja_molokova_1.jpg

4._natalja_molokova_1.jpg

1386 ms

5.maksim_urbanovich_1.jpg

5.maksim_urbanovich_1.jpg

1684 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1481 ms

geo-icon.png

geo-icon.png

683 ms

jaroslav_prus.jpg

jaroslav_prus.jpg

1428 ms

8.lyudmila_ilyuhina_4.jpg

8.lyudmila_ilyuhina_4.jpg

1587 ms

tag.js

tag.js

1018 ms

637 ms

9._sergei_orlov_1.jpg

9._sergei_orlov_1.jpg

1560 ms

marija_panchenko.jpg

marija_panchenko.jpg

1584 ms

11.aleksei_smagin_1.jpg

11.aleksei_smagin_1.jpg

1797 ms

16.evgenija_pizhurina.jpg

16.evgenija_pizhurina.jpg

1674 ms

img_0068.jpg

img_0068.jpg

2230 ms

yandex.png

yandex.png

1578 ms

google.png

google.png

1628 ms

otzivi_1.png

otzivi_1.png

2499 ms

otzivi_2.png

otzivi_2.png

2146 ms

otzivi_3.png

otzivi_3.png

1983 ms

otzivi_4.png

otzivi_4.png

2050 ms

dropdown-toggle.svg

dropdown-toggle.svg

2153 ms

body_bg.png

body_bg.png

2173 ms

list-decor.png

list-decor.png

2148 ms

circle.png

circle.png

2185 ms

owl-prev.png

owl-prev.png

2175 ms

owl-next.png

owl-next.png

2278 ms

elcentro-text.png

elcentro-text.png

2188 ms

price__item-header_decor.png

price__item-header_decor.png

2213 ms

openapi.c340c125c61ec5745ebb2a98626e46ab.js

openapi.c340c125c61ec5745ebb2a98626e46ab.js

250 ms

plus.png

plus.png

2200 ms

minus.png

minus.png

2285 ms

geo-icon.png

geo-icon.png

2294 ms

b24f513706454b8a88be.css

b24f513706454b8a88be.css

374 ms

933 ms

e690f6dd33c8870d6972.yandex.ru.js

e690f6dd33c8870d6972.yandex.ru.js

593 ms

2343feb4aaeecff3cdc3.yandex.ru.js

2343feb4aaeecff3cdc3.yandex.ru.js

643 ms

rtrg

rtrg

137 ms

otzivi_5.png

otzivi_5.png

2126 ms

otzivi_6.png

otzivi_6.png

2229 ms

img-4.png

img-4.png

2752 ms

15_prihodite_mobile.jpg

15_prihodite_mobile.jpg

2092 ms

watch.js

watch.js

4 ms

logo-web-ru-80x40.svg

logo-web-ru-80x40.svg

326 ms

advert.gif

advert.gif

695 ms

combine

combine

872 ms

sync_cookie_image_decide

sync_cookie_image_decide

148 ms

1

1

142 ms

ef50ac9e93aaebe3299791c79f277f8e.cur

ef50ac9e93aaebe3299791c79f277f8e.cur

158 ms

3ce22e999d54bb9ca8150a59207f9d3e.cur

3ce22e999d54bb9ca8150a59207f9d3e.cur

268 ms

4965b66fe115b2f2ed500ece66514d86.cur

4965b66fe115b2f2ed500ece66514d86.cur

382 ms

77492cf358d8b12629399322926c93f2.cur

77492cf358d8b12629399322926c93f2.cur

394 ms

Accessibility Review

elcentro.ru accessibility score

65

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

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[role]s are not contained by their required parent element

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

Image elements do not have [alt] attributes

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>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

elcentro.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

elcentro.ru SEO score

92

Search Engine Optimization Advices

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

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 Elcentro.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 Elcentro.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

elcentro.ru

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