Tools & Wizards About Us
visualscience.ru screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

visualscience.ru

Образовательный портал «Смотри Учись» — учитесь где угодно и когда угодно

Page Load Speed

6.2 sec in total

First Response

565 ms

Resources Loaded

5.3 sec

Page Rendered

362 ms

visualscience.ru screenshot

About Website

Welcome to visualscience.ru homepage info - get ready to check Visualscience best content right away, or after learning these important things about visualscience.ru

Полный набор курсов виртуальной академии «Смотри Учись» — записывайтесь на обучающие курсы дистанционно, заводите однокурсников, делитесь опытом.

Visit visualscience.ru

Key Findings

We analyzed Visualscience.ru page load time and found that the first response time was 565 ms and then it took 5.7 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

visualscience.ru performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

19/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value9.3 s

13/100

10%

TBT (Total Blocking Time)

Value1,580 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.005

100/100

15%

TTI (Time to Interactive)

Value11.3 s

19/100

10%

Network Requests Diagram

visualscience.ru

565 ms

visualscience.ru

602 ms

smotriuchis.ru

1116 ms

main.css

296 ms

vendor.js

1021 ms

Our browser made a total of 82 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Visualscience.ru, 94% (77 requests) were made to Smotriuchis.ru and 2% (2 requests) were made to Mc.yandex.com. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source Smotriuchis.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 501.7 kB (48%)

Content Size

1.0 MB

After Optimization

547.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Visualscience.ru main page is 1.0 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. 45% of websites need less resources to load. HTML takes 461.3 kB which makes up the majority of the site volume.

HTML Optimization

-94%

Potential reduce by 432.0 kB

  • Original 461.3 kB
  • After minification 224.6 kB
  • After compression 29.3 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. This page needs HTML code to be minified as it can gain 236.7 kB, which is 51% 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 432.0 kB or 94% of the original size.

Image Optimization

-57%

Potential reduce by 59.1 kB

  • Original 103.1 kB
  • After minification 44.0 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, Visualscience needs image optimization as it can save up to 59.1 kB or 57% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 118 B

  • Original 422.1 kB
  • After minification 422.1 kB
  • After compression 421.9 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

-17%

Potential reduce by 10.5 kB

  • Original 62.5 kB
  • After minification 62.5 kB
  • After compression 52.0 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. Visualscience.ru needs all CSS files to be minified and compressed as it can save up to 10.5 kB or 17% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (21%)

Requests Now

72

After Optimization

57

  • Images
  • JavaScript
  • CSS

The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Visualscience. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

visualscience.ru

visualscience.ru

565 ms

visualscience.ru

visualscience.ru

602 ms

smotriuchis.ru

smotriuchis.ru

1116 ms

main.css

main.css

296 ms

vendor.js

vendor.js

1021 ms

main.js

main.js

877 ms

select_city.js

select_city.js

458 ms

login.js

login.js

439 ms

request.js

request.js

440 ms

sprites.svg

sprites.svg

145 ms

logo_su.png

logo_su.png

466 ms

teacher.jpg

teacher.jpg

186 ms

down.svg

down.svg

218 ms

L2LKQu9bFT4VIYZ59vL5dQKuDhXj3YAd9E0M1f56_public_top_page.webp

L2LKQu9bFT4VIYZ59vL5dQKuDhXj3YAd9E0M1f56_public_top_page.webp

285 ms

MFc93Cx2HWbxe1w7XBZPggQbbhj3OJjDDiCDXwvR_public_top_page.webp

MFc93Cx2HWbxe1w7XBZPggQbbhj3OJjDDiCDXwvR_public_top_page.webp

327 ms

w2Ywx01Jz7D7l8Aw9zBG4LUwOp8qQc6rwZRsN8WE_public_top_page.webp

w2Ywx01Jz7D7l8Aw9zBG4LUwOp8qQc6rwZRsN8WE_public_top_page.webp

500 ms

QRvoKbfQBFwACn9Zd1j9s4ZAaiVpEwQ0vLWaGtNr_public_top_page.webp

QRvoKbfQBFwACn9Zd1j9s4ZAaiVpEwQ0vLWaGtNr_public_top_page.webp

425 ms

y7cGBPQzaZUaP3QbYZ5zVQhjVYvoFMuRzFWn2mcI_public_top_page.webp

y7cGBPQzaZUaP3QbYZ5zVQhjVYvoFMuRzFWn2mcI_public_top_page.webp

468 ms

NXwglBomlIxKh8uIAmnDUwR4iFf4nVvLrW4Lfg5n_public_top_page.webp

NXwglBomlIxKh8uIAmnDUwR4iFf4nVvLrW4Lfg5n_public_top_page.webp

567 ms

GQke1SMb01m3atCK6cUA0gAnAtDvOIQYBeG9eEp7_public_top_page.webp

GQke1SMb01m3atCK6cUA0gAnAtDvOIQYBeG9eEp7_public_top_page.webp

607 ms

yF0upnZ2UotwVZFZZ8chsQfzcauvJumH02DjIWQb_public_top_page.webp

yF0upnZ2UotwVZFZZ8chsQfzcauvJumH02DjIWQb_public_top_page.webp

609 ms

Vhyj50spGWeub7cE6wnKljqs3GdPvNq2l3khS1Bj_public_top_page.webp

Vhyj50spGWeub7cE6wnKljqs3GdPvNq2l3khS1Bj_public_top_page.webp

636 ms

gW6dxphkfFmbFmM551sYqdXLpyBZZmY383bZ7nBU_public_top_page.webp

gW6dxphkfFmbFmM551sYqdXLpyBZZmY383bZ7nBU_public_top_page.webp

668 ms

Ykeiq5dccCeEzuxjlqj3jbGra1yhUUtb6zfFxFq6_public_top_page.webp

Ykeiq5dccCeEzuxjlqj3jbGra1yhUUtb6zfFxFq6_public_top_page.webp

707 ms

SB8vl0MqylVbKtdiQKAt97zYK6qjcAlljvARk0D2_public_top_page.webp

SB8vl0MqylVbKtdiQKAt97zYK6qjcAlljvARk0D2_public_top_page.webp

747 ms

WjRkftbwi9TIgB3ddkCS5Jk2H7AF3fctqB40po11.webp

WjRkftbwi9TIgB3ddkCS5Jk2H7AF3fctqB40po11.webp

749 ms

Y3MtPDeFBgB72WHamTGNdMPPVQQSVCkiWfGpao91.png

Y3MtPDeFBgB72WHamTGNdMPPVQQSVCkiWfGpao91.png

776 ms

F7OjHQKuCzA5yRsIAzHBsbStYhYFiezGQNsVyifs.webp

F7OjHQKuCzA5yRsIAzHBsbStYhYFiezGQNsVyifs.webp

779 ms

6Y6EsHh8N0MSUdBbJSWe3qcS9WeMYmTslql8QnXb.png

6Y6EsHh8N0MSUdBbJSWe3qcS9WeMYmTslql8QnXb.png

781 ms

eDAWBuSy0vjN6KaCRoOUrI2eiPHIQSLAF5tUNLrb.webp

eDAWBuSy0vjN6KaCRoOUrI2eiPHIQSLAF5tUNLrb.webp

848 ms

4tEIbJo1DTrBHjeFFUTMoUzqJfI6Cud73MaEz5qv.webp

4tEIbJo1DTrBHjeFFUTMoUzqJfI6Cud73MaEz5qv.webp

888 ms

VtTBn8avGKJP422Z2MQKmN4GvE13r2hDmSYhZtAy.webp

VtTBn8avGKJP422Z2MQKmN4GvE13r2hDmSYhZtAy.webp

888 ms

5YUa79txrVQ3WsNKrznCGcdN5X7Lh2taDRhKraEa.webp

5YUa79txrVQ3WsNKrznCGcdN5X7Lh2taDRhKraEa.webp

916 ms

bg_right.svg

bg_right.svg

919 ms

mc8Q1gQAaBsMbSlU1LAJXmLO7udZhk31wd5mtao4_public_partner_preview_circle.webp

mc8Q1gQAaBsMbSlU1LAJXmLO7udZhk31wd5mtao4_public_partner_preview_circle.webp

923 ms

MhLbXO4fVaIfFcP83p6D99nNUj4rhBaHmEXYpYT6_public_partner_preview_circle.webp

MhLbXO4fVaIfFcP83p6D99nNUj4rhBaHmEXYpYT6_public_partner_preview_circle.webp

988 ms

16uQ8EIc3mnH1X1X1mR2u6MMyn0hYfbvc0YTmdmp_public_partner_preview_circle.webp

16uQ8EIc3mnH1X1X1mR2u6MMyn0hYfbvc0YTmdmp_public_partner_preview_circle.webp

1028 ms

dijvIRPTtpH2cR3OjKzIXaZF2pcvJs4jkEvlHYj9_public_partner_preview_circle.webp

dijvIRPTtpH2cR3OjKzIXaZF2pcvJs4jkEvlHYj9_public_partner_preview_circle.webp

1030 ms

IlAsBCjZ8P04o57ckFGQ2khgacZprPo6Guz8tR5J_public_partner_preview_circle.webp

IlAsBCjZ8P04o57ckFGQ2khgacZprPo6Guz8tR5J_public_partner_preview_circle.webp

1055 ms

DekFI4BBDDINCETjFAogg9cFXGyCkY5AWxYcS1NO_public_partner_preview_circle.webp

DekFI4BBDDINCETjFAogg9cFXGyCkY5AWxYcS1NO_public_partner_preview_circle.webp

1004 ms

fzsZPzxyQQOeEGlW03RQiZLzigFZlWEJHeWlq5yS_public_partner_preview_circle.webp

fzsZPzxyQQOeEGlW03RQiZLzigFZlWEJHeWlq5yS_public_partner_preview_circle.webp

1007 ms

Nunito-Regular.woff

Nunito-Regular.woff

1073 ms

Nunito-Light.woff

Nunito-Light.woff

1236 ms

Nunito-ExtraLight.woff

Nunito-ExtraLight.woff

1181 ms

Nunito-SemiBold.woff

Nunito-SemiBold.woff

1184 ms

Nunito-Bold.woff

Nunito-Bold.woff

1151 ms

Nunito-ExtraBold.woff

Nunito-ExtraBold.woff

1084 ms

Nunito-Black.woff

Nunito-Black.woff

948 ms

MvLX8qL3xozc4SaxdWZ2cU2h1gpja6rq2Sw4fVbL_public_partner_preview_circle.webp

MvLX8qL3xozc4SaxdWZ2cU2h1gpja6rq2Sw4fVbL_public_partner_preview_circle.webp

1004 ms

scyAX36Yp5dkq8mx8YC3UhRTSGW6zvvbOuJ711yo_public_partner_preview_circle.webp

scyAX36Yp5dkq8mx8YC3UhRTSGW6zvvbOuJ711yo_public_partner_preview_circle.webp

988 ms

TyIqsgYI58PokZpX9hfa1S4Xg94Rmgl9dE3lfdtW_public_partner_preview_circle.webp

TyIqsgYI58PokZpX9hfa1S4Xg94Rmgl9dE3lfdtW_public_partner_preview_circle.webp

986 ms

DLL1sDuFcbIZRYmf4ZRFsU7DuryFFbY1NIeviaIk_public_partner_preview_circle.webp

DLL1sDuFcbIZRYmf4ZRFsU7DuryFFbY1NIeviaIk_public_partner_preview_circle.webp

985 ms

eWNvOZFwWPRtLsR9LGn2EFpbsfrVb5UMSmw7dalN_public_partner_preview_circle.webp

eWNvOZFwWPRtLsR9LGn2EFpbsfrVb5UMSmw7dalN_public_partner_preview_circle.webp

984 ms

GUKirAJReUUo0c2w5nPn9X04OVnSjh4LCIBDWuZA_public_partner_preview_circle.webp

GUKirAJReUUo0c2w5nPn9X04OVnSjh4LCIBDWuZA_public_partner_preview_circle.webp

921 ms

48VKYWpkq7JT8Eum6qxkok9L2uUVBSRq2s4i59dc_public_partner_preview_circle.webp

48VKYWpkq7JT8Eum6qxkok9L2uUVBSRq2s4i59dc_public_partner_preview_circle.webp

949 ms

H8x3Oq7ppBDZLWGwygSP3eEciygzu0y1B8qF2jvB_public_partner_preview_circle.webp

H8x3Oq7ppBDZLWGwygSP3eEciygzu0y1B8qF2jvB_public_partner_preview_circle.webp

984 ms

XegkCDqBI1JPHUo5oUJvBahwztMBW5ilo4efFqa5_public_partner_preview_circle.webp

XegkCDqBI1JPHUo5oUJvBahwztMBW5ilo4efFqa5_public_partner_preview_circle.webp

957 ms

tag.js

tag.js

1025 ms

OqTWSUEmGJnrKqXzXTfKX6ZuuUP8d0u0C4RNVxj0_public_partner_preview_circle.webp

OqTWSUEmGJnrKqXzXTfKX6ZuuUP8d0u0C4RNVxj0_public_partner_preview_circle.webp

953 ms

mc8Q1gQAaBsMbSlU1LAJXmLO7udZhk31wd5mtao4.webp

mc8Q1gQAaBsMbSlU1LAJXmLO7udZhk31wd5mtao4.webp

956 ms

eWNvOZFwWPRtLsR9LGn2EFpbsfrVb5UMSmw7dalN.webp

eWNvOZFwWPRtLsR9LGn2EFpbsfrVb5UMSmw7dalN.webp

921 ms

fzsZPzxyQQOeEGlW03RQiZLzigFZlWEJHeWlq5yS.webp

fzsZPzxyQQOeEGlW03RQiZLzigFZlWEJHeWlq5yS.webp

1048 ms

GUKirAJReUUo0c2w5nPn9X04OVnSjh4LCIBDWuZA.webp

GUKirAJReUUo0c2w5nPn9X04OVnSjh4LCIBDWuZA.webp

1048 ms

16uQ8EIc3mnH1X1X1mR2u6MMyn0hYfbvc0YTmdmp.webp

16uQ8EIc3mnH1X1X1mR2u6MMyn0hYfbvc0YTmdmp.webp

1020 ms

dijvIRPTtpH2cR3OjKzIXaZF2pcvJs4jkEvlHYj9.webp

dijvIRPTtpH2cR3OjKzIXaZF2pcvJs4jkEvlHYj9.webp

1018 ms

K96ed2rjcpMxJp1HQ45lAQbqEKaj4euumDC7pjrK.webp

K96ed2rjcpMxJp1HQ45lAQbqEKaj4euumDC7pjrK.webp

1017 ms

IlAsBCjZ8P04o57ckFGQ2khgacZprPo6Guz8tR5J.webp

IlAsBCjZ8P04o57ckFGQ2khgacZprPo6Guz8tR5J.webp

951 ms

bg_left.svg

bg_left.svg

950 ms

x2q4WQ0cu30M4aOm7PqGf4duWPyyaKdhFZsyBfF7.webp

x2q4WQ0cu30M4aOm7PqGf4duWPyyaKdhFZsyBfF7.webp

986 ms

j59QtyJ0PfmIPNyPkbptlTXpWigsmI7GT3qKn27d.webp

j59QtyJ0PfmIPNyPkbptlTXpWigsmI7GT3qKn27d.webp

959 ms

lvrZgFHqiE4C0pIJNjXVDwxgowcuyBIKrH1UODKx.webp

lvrZgFHqiE4C0pIJNjXVDwxgowcuyBIKrH1UODKx.webp

1399 ms

onDiEKQFQeg1MramlPSECWeZDEJX1asH6D5MwA8t.webp

onDiEKQFQeg1MramlPSECWeZDEJX1asH6D5MwA8t.webp

1261 ms

M6Ct3UX8adRUjCCr7Fb8MiqrPlIRXJ1NsbxMYnD7.webp

M6Ct3UX8adRUjCCr7Fb8MiqrPlIRXJ1NsbxMYnD7.webp

1204 ms

z400KZ3ny4iIxUZa0zxAs50EnbOOIeE7czW01mBO.webp

z400KZ3ny4iIxUZa0zxAs50EnbOOIeE7czW01mBO.webp

1090 ms

vk.png

vk.png

986 ms

fb.png

fb.png

960 ms

ya.png

ya.png

1098 ms

go.png

go.png

1094 ms

ok.png

ok.png

1110 ms

eye.svg

eye.svg

1006 ms

advert.gif

advert.gif

703 ms

sync_cookie_image_decide

sync_cookie_image_decide

177 ms

Accessibility Review

visualscience.ru accessibility score

63

Accessibility Issues

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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

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

visualscience.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

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

visualscience.ru SEO score

100

Search Engine Optimization Advices

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

    RU

  • Encoding

    UTF-8

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

visualscience.ru

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