Tools & Wizards About Us
11klasov.com screenshot

Report Summary

  • 11

    Performance

    Renders faster than
    24% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

11klasov.com

Скачать школьные учебники онлайн в электронном виде (PDF и DjVu)

Page Load Speed

3 sec in total

First Response

218 ms

Resources Loaded

2.5 sec

Page Rendered

262 ms

11klasov.com screenshot

About Website

Click here to check amazing 11 Klasov content for Russia. Otherwise, check out these important facts you probably never knew about 11klasov.com

Электронные учебники онлайн для школы, ГИА, ЕГЭ, ГДЗ решебники, учебные пособия скачать бесплатно в PDF и DjVu формате.

Visit 11klasov.com

Key Findings

We analyzed 11klasov.com page load time and found that the first response time was 218 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

11klasov.com performance score

11

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value18.2 s

0/100

25%

SI (Speed Index)

Value13.2 s

2/100

10%

TBT (Total Blocking Time)

Value2,150 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.296

40/100

15%

TTI (Time to Interactive)

Value23.7 s

1/100

10%

Network Requests Diagram

11klasov.com

218 ms

11klasov.com

387 ms

11klasov.net

416 ms

go.11klasov.net

449 ms

styles.css

8 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that 8% of them (2 requests) were addressed to the original 11klasov.com, 73% (19 requests) were made to Go.11klasov.net and 4% (1 request) were made to 11klasov.net. The less responsive or slowest element that took the longest time to load (896 ms) relates to the external source Yandex.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 37.2 kB (27%)

Content Size

136.3 kB

After Optimization

99.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 11klasov.com main page is 136.3 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. 30% of websites need less resources to load. HTML takes 44.4 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 33.2 kB

  • Original 44.4 kB
  • After minification 44.0 kB
  • After compression 11.2 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 33.2 kB or 75% of the original size.

Image Optimization

-10%

Potential reduce by 1.1 kB

  • Original 10.9 kB
  • After minification 9.8 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. 11 Klasov images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 225 B

  • Original 39.2 kB
  • After minification 39.2 kB
  • After compression 38.9 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

-6%

Potential reduce by 2.7 kB

  • Original 41.8 kB
  • After minification 41.8 kB
  • After compression 39.2 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. 11klasov.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 10 (56%)

Requests Now

18

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 11 Klasov. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

11klasov.com

11klasov.com

218 ms

11klasov.com

11klasov.com

387 ms

11klasov.net

11klasov.net

416 ms

go.11klasov.net

go.11klasov.net

449 ms

styles.css

styles.css

8 ms

engine.css

engine.css

20 ms

fontawesome.css

fontawesome.css

18 ms

xsort.css

xsort.css

22 ms

context.js

context.js

896 ms

index.php

index.php

490 ms

index.php

index.php

503 ms

index.php

index.php

402 ms

s.js

s.js

243 ms

hit

hit

512 ms

bg.png

bg.png

8 ms

logo.png

logo.png

8 ms

no-img.png

no-img.png

8 ms

telegram-icon.svg

telegram-icon.svg

17 ms

flogo.png

flogo.png

17 ms

PTS55F.woff

PTS55F.woff

23 ms

PTS75F.woff

PTS75F.woff

33 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

12 ms

fontawesome-webfont.ttf

fontawesome-webfont.ttf

21 ms

es5-shims.min.js

es5-shims.min.js

495 ms

share.js

share.js

13 ms

main.js

main.js

6 ms

Accessibility Review

11klasov.com accessibility score

94

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.

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

Best Practices

11klasov.com best practices score

58

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

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

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

11klasov.com SEO score

93

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Page is blocked from indexing

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

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 11klasov.com 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 11klasov.com main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

11klasov.com

Open Graph data is detected on the main page of PARSED_DOMAIN, but there is no image specified in description. It would be a good idea for the website admin to select a nice image that can properly represent the website in Open Graph data, otherwise the first found image will be taken for this purpose and social media information block will look like this: