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1cov-edu.ru screenshot

Report Summary

  • 85

    Performance

    Renders faster than
    88% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

1cov-edu.ru

Методы решения физико-математических задач

Page Load Speed

2.9 sec in total

First Response

520 ms

Resources Loaded

2.2 sec

Page Rendered

245 ms

1cov-edu.ru screenshot

About Website

Welcome to 1cov-edu.ru homepage info - get ready to check 1 Cov Edu best content for Russia right away, or after learning these important things about 1cov-edu.ru

Сайт посвящен методам решения задач по высшей математике и теоретической механике. Здесь излагается теория, методы и примеры решения задач.

Visit 1cov-edu.ru

Key Findings

We analyzed 1cov-edu.ru page load time and found that the first response time was 520 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

1cov-edu.ru performance score

85

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.2 s

100/100

25%

SI (Speed Index)

Value3.2 s

91/100

10%

TBT (Total Blocking Time)

Value450 ms

63/100

30%

CLS (Cumulative Layout Shift)

Value0.054

98/100

15%

TTI (Time to Interactive)

Value5.3 s

73/100

10%

Network Requests Diagram

1cov-edu.ru

520 ms

1cov-edu.ru

473 ms

context.js

959 ms

logo.png

116 ms

18.js

230 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that 67% of them (6 requests) were addressed to the original 1cov-edu.ru, 11% (1 request) were made to Yandex.ru and 11% (1 request) were made to Counter.yadro.ru. The less responsive or slowest element that took the longest time to load (959 ms) relates to the external source Yandex.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 23.2 kB (17%)

Content Size

139.9 kB

After Optimization

116.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 1cov-edu.ru main page is 139.9 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. Only 10% of websites need less resources to load. Javascripts take 94.0 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 23.1 kB

  • Original 31.0 kB
  • After minification 31.0 kB
  • After compression 7.9 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 23.1 kB or 74% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 10.8 kB
  • After minification 10.8 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. 1 Cov Edu images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 47 B

  • Original 94.0 kB
  • After minification 94.0 kB
  • After compression 94.0 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

-1%

Potential reduce by 55 B

  • Original 4.1 kB
  • After minification 4.1 kB
  • After compression 4.0 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. 1cov-edu.ru has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now

7

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 7 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 1 Cov Edu. According to our analytics all requests are already optimized.

Network Requests Diagram

1cov-edu.ru

1cov-edu.ru

520 ms

1cov-edu.ru

1cov-edu.ru

473 ms

context.js

context.js

959 ms

logo.png

logo.png

116 ms

18.js

18.js

230 ms

hit

hit

540 ms

tag.js

tag.js

828 ms

28.css

28.css

116 ms

sb.png

sb.png

241 ms

Accessibility Review

1cov-edu.ru accessibility score

90

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

Some elements have a [tabindex] value greater than 0

Best Practices

1cov-edu.ru best practices score

83

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

SEO Factors

1cov-edu.ru SEO score

92

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 1cov-edu.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 1cov-edu.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

1cov-edu.ru

Open Graph description is not detected on the main page of 1 Cov Edu. 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: