Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 87% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

uchebniki-online.net

Электронные учебники для школы. Скачать украинские учебники pdf.

Page Load Speed

3.4 sec in total

First Response

616 ms

Resources Loaded

2.4 sec

Page Rendered

368 ms

uchebniki-online.net screenshot

About Website

Click here to check amazing Uchebniki Online content for Ukraine. Otherwise, check out these important facts you probably never knew about uchebniki-online.net

Онлайн учебники - книги, содержащие основы научных знаний по учебным дисциплинам: математике, английскому, украинскому языку, биологии, географии, истории, физики, химии.

Visit uchebniki-online.net

Key Findings

We analyzed Uchebniki-online.net page load time and found that the first response time was 616 ms and then it took 2.8 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

uchebniki-online.net performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

80/100

10%

LCP (Largest Contentful Paint)

Value6.2 s

11/100

25%

SI (Speed Index)

Value5.1 s

61/100

10%

TBT (Total Blocking Time)

Value2,910 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.904

3/100

15%

TTI (Time to Interactive)

Value6.7 s

56/100

10%

Network Requests Diagram

uchebniki-online.net

616 ms

index.php

390 ms

styles.css

382 ms

engine.css

254 ms

jquery.liMarquee.js

385 ms

Our browser made a total of 71 requests to load all elements on the main page. We found that 39% of them (28 requests) were addressed to the original Uchebniki-online.net, 18% (13 requests) were made to Vk.com and 11% (8 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (774 ms) belongs to the original domain Uchebniki-online.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 476.3 kB (39%)

Content Size

1.2 MB

After Optimization

730.0 kB

In fact, the total size of Uchebniki-online.net main page is 1.2 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. 50% of websites need less resources to load. Images take 649.7 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 63.1 kB

  • Original 74.4 kB
  • After minification 69.8 kB
  • After compression 11.4 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 63.1 kB or 85% of the original size.

Image Optimization

-10%

Potential reduce by 63.8 kB

  • Original 649.7 kB
  • After minification 585.9 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. Uchebniki Online images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 256.1 kB

  • Original 368.3 kB
  • After minification 307.6 kB
  • After compression 112.2 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 256.1 kB or 70% of the original size.

CSS Optimization

-82%

Potential reduce by 93.4 kB

  • Original 113.9 kB
  • After minification 94.8 kB
  • After compression 20.5 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. Uchebniki-online.net needs all CSS files to be minified and compressed as it can save up to 93.4 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 29 (44%)

Requests Now

66

After Optimization

37

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Uchebniki Online. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

uchebniki-online.net accessibility score

95

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.

Best Practices

uchebniki-online.net best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

uchebniki-online.net 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

    WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Uchebniki-online.net 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 Uchebniki-online.net main page’s claimed encoding is windows-1251. 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

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