Tools & Wizards About Us

Report Summary

  • 91

    Performance

    Renders faster than
    91% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

vkniga.ru

Купить учебники, рабочие тетради, книги, канцтовары и софт в интернет-магазине "Виртуальная Книга"

Page Load Speed

3.7 sec in total

First Response

366 ms

Resources Loaded

3.1 sec

Page Rendered

250 ms

About Website

Visit vkniga.ru now to see the best up-to-date Vkniga content for Russia and also check out these interesting facts you probably never knew about vkniga.ru

купить учебники, купить рабочие тетради, купить книги, купить канцтовары

Visit vkniga.ru

Key Findings

We analyzed Vkniga.ru page load time and found that the first response time was 366 ms and then it took 3.4 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

vkniga.ru performance score

91

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

75/100

10%

LCP (Largest Contentful Paint)

Value2.3 s

94/100

25%

SI (Speed Index)

Value4.5 s

71/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.5 s

82/100

10%

Network Requests Diagram

vkniga.ru

366 ms

www.vkniga.ru

755 ms

mootools-core-1.3.js

505 ms

mootools-more-1.3.js

673 ms

main.js

215 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that 81% of them (39 requests) were addressed to the original Vkniga.ru, 13% (6 requests) were made to Virtualacademy.ru and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Vkniga.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 830.1 kB (42%)

Content Size

2.0 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vkniga.ru main page is 2.0 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. 25% of websites need less resources to load. Images take 970.1 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 52.5 kB

  • Original 61.9 kB
  • After minification 40.9 kB
  • After compression 9.4 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. This page needs HTML code to be minified as it can gain 21.0 kB, which is 34% 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 52.5 kB or 85% of the original size.

Image Optimization

-4%

Potential reduce by 36.5 kB

  • Original 970.1 kB
  • After minification 933.5 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. Vkniga images are well optimized though.

JavaScript Optimization

-76%

Potential reduce by 544.5 kB

  • Original 719.0 kB
  • After minification 573.2 kB
  • After compression 174.5 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 544.5 kB or 76% of the original size.

CSS Optimization

-86%

Potential reduce by 196.6 kB

  • Original 229.3 kB
  • After minification 195.7 kB
  • After compression 32.7 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. Vkniga.ru needs all CSS files to be minified and compressed as it can save up to 196.6 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (40%)

Requests Now

45

After Optimization

27

  • Images
  • JavaScript
  • CSS

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vkniga. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

vkniga.ru accessibility score

79

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.

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

vkniga.ru best practices score

75

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

vkniga.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

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 Vkniga.ru 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 Vkniga.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

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