Tools & Wizards About Us
uchebnik-rabochaya-tetrad.com screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 88

    SEO

    Google-friendlier than
    65% of websites

uchebnik-rabochaya-tetrad.com

Сайт uchebnik-rabochaya-tetrad.com - учебники и рабочие тетради читать онлайн

Page Load Speed

3.6 sec in total

First Response

26 ms

Resources Loaded

3.5 sec

Page Rendered

87 ms

uchebnik-rabochaya-tetrad.com screenshot

About Website

Welcome to uchebnik-rabochaya-tetrad.com homepage info - get ready to check Uchebnik Rabochaya Tetrad best content for Russia right away, or after learning these important things about uchebnik-rabochaya-tetrad.com

uchebnik-rabochaya-tetrad.com - сайт с учебниками и рабочими тетрадями, которые можно читать (смотреть) онлайн.

Visit uchebnik-rabochaya-tetrad.com

Key Findings

We analyzed Uchebnik-rabochaya-tetrad.com page load time and found that the first response time was 26 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

uchebnik-rabochaya-tetrad.com performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

58/100

10%

LCP (Largest Contentful Paint)

Value2.9 s

81/100

25%

SI (Speed Index)

Value15.3 s

1/100

10%

TBT (Total Blocking Time)

Value4,510 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.05

99/100

15%

TTI (Time to Interactive)

Value31.2 s

0/100

10%

Network Requests Diagram

uchebnik-rabochaya-tetrad.com

26 ms

uchebnik-rabochaya-tetrad.com

217 ms

head.js

12 ms

share.js

24 ms

rek1.js

21 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that 39% of them (18 requests) were addressed to the original Uchebnik-rabochaya-tetrad.com, 15% (7 requests) were made to St6-21.vk.com and 13% (6 requests) were made to Vk.com. The less responsive or slowest element that took the longest time to load (1 sec) relates to the external source Mc.yandex.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 180.1 kB (22%)

Content Size

820.0 kB

After Optimization

639.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Uchebnik-rabochaya-tetrad.com main page is 820.0 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. 25% of websites need less resources to load. CSS take 335.9 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 102.1 kB

  • Original 121.9 kB
  • After minification 121.8 kB
  • After compression 19.8 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 102.1 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 36.3 kB
  • After minification 36.3 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. Uchebnik Rabochaya Tetrad images are well optimized though.

JavaScript Optimization

-17%

Potential reduce by 54.5 kB

  • Original 325.9 kB
  • After minification 325.9 kB
  • After compression 271.3 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 54.5 kB or 17% of the original size.

CSS Optimization

-7%

Potential reduce by 23.5 kB

  • Original 335.9 kB
  • After minification 335.9 kB
  • After compression 312.4 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. Uchebnik-rabochaya-tetrad.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 35 (83%)

Requests Now

42

After Optimization

7

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Uchebnik Rabochaya Tetrad. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

uchebnik-rabochaya-tetrad.com

uchebnik-rabochaya-tetrad.com

26 ms

uchebnik-rabochaya-tetrad.com

uchebnik-rabochaya-tetrad.com

217 ms

head.js

head.js

12 ms

share.js

share.js

24 ms

rek1.js

rek1.js

21 ms

menu.js

menu.js

30 ms

dop1.js

dop1.js

30 ms

rek2.js

rek2.js

214 ms

vk_comment.js

vk_comment.js

40 ms

rek3.js

rek3.js

39 ms

footer.js

footer.js

48 ms

statistika.js

statistika.js

61 ms

prettyPhoto.css

prettyPhoto.css

38 ms

jquery.js

jquery.js

47 ms

jquery-migrate.min.js

jquery-migrate.min.js

58 ms

jquery.prettyPhoto.min.js

jquery.prettyPhoto.min.js

49 ms

pretty1.js

pretty1.js

51 ms

es5-shims.min.js

es5-shims.min.js

527 ms

share.js

share.js

771 ms

openapi.c340c125c61ec5745ebb2a98626e46ab.js

openapi.c340c125c61ec5745ebb2a98626e46ab.js

242 ms

qr.gif

qr.gif

17 ms

s.js

s.js

541 ms

relap.js

relap.js

889 ms

upload.gif

upload.gif

128 ms

watch.js

watch.js

21 ms

analytics.js

analytics.js

30 ms

hit

hit

677 ms

widget_comments.php

widget_comments.php

258 ms

collect

collect

11 ms

js

js

58 ms

loader_nav21227883893_3.js

loader_nav21227883893_3.js

275 ms

fonts_cnt.c7a76efe.css

fonts_cnt.c7a76efe.css

983 ms

lite.c9bfd4eb.css

lite.c9bfd4eb.css

755 ms

lang3_2.js

lang3_2.js

584 ms

c3d11fba.7c0fe545.js

c3d11fba.7c0fe545.js

648 ms

xdm.js

xdm.js

631 ms

base.28bbffbf.css

base.28bbffbf.css

660 ms

tag.js

tag.js

1020 ms

lite.f8081c5724ea3c8f7503758696b1108c.js

lite.f8081c5724ea3c8f7503758696b1108c.js

300 ms

hit

hit

136 ms

browsers.png

browsers.png

212 ms

upload.gif

upload.gif

81 ms

code.js

code.js

914 ms

advert.gif

advert.gif

802 ms

counter

counter

128 ms

sync_cookie_image_decide

sync_cookie_image_decide

158 ms

Accessibility Review

uchebnik-rabochaya-tetrad.com accessibility score

66

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

<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

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

uchebnik-rabochaya-tetrad.com best practices score

83

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

Page has valid source maps

SEO Factors

uchebnik-rabochaya-tetrad.com SEO score

88

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Uchebnik-rabochaya-tetrad.com can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Uchebnik-rabochaya-tetrad.com 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

uchebnik-rabochaya-tetrad.com

Open Graph description is not detected on the main page of Uchebnik Rabochaya Tetrad. 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: