Tools & Wizards About Us
knigi813.ru screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

knigi813.ru

Z-Книга Интернет магазин школьной учебной литературы, товаров для творчества и канцелярских товаров.

Page Load Speed

5.1 sec in total

First Response

679 ms

Resources Loaded

4.1 sec

Page Rendered

414 ms

knigi813.ru screenshot

About Website

Welcome to knigi813.ru homepage info - get ready to check Knigi 813 best content for Russia right away, or after learning these important things about knigi813.ru

Магазин учебной литературы, канцелярских товаров для школы и офиса, картин по номерам, алмазной мозаики стразами и наборов вышивки.

Visit knigi813.ru

Key Findings

We analyzed Knigi813.ru page load time and found that the first response time was 679 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

knigi813.ru performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value21.8 s

0/100

25%

SI (Speed Index)

Value12.6 s

3/100

10%

TBT (Total Blocking Time)

Value14,970 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.051

99/100

15%

TTI (Time to Interactive)

Value24.6 s

0/100

10%

Network Requests Diagram

knigi813.ru

679 ms

knigi813.ru

547 ms

kernel_main.css

284 ms

page_34e4695ce16971e786bdb14763c7ceb9.css

280 ms

popup.min.css

287 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 92% of them (84 requests) were addressed to the original Knigi813.ru, 3% (3 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Bitrix.info. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Knigi813.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.0 MB (31%)

Content Size

3.3 MB

After Optimization

2.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Knigi813.ru main page is 3.3 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. 70% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 105.4 kB

  • Original 126.6 kB
  • After minification 109.4 kB
  • After compression 21.2 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. This page needs HTML code to be minified as it can gain 17.2 kB, which is 14% 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 105.4 kB or 83% of the original size.

Image Optimization

-2%

Potential reduce by 36.1 kB

  • Original 2.0 MB
  • After minification 2.0 MB

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. Knigi 813 images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 480.1 kB

  • Original 669.3 kB
  • After minification 669.3 kB
  • After compression 189.2 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 480.1 kB or 72% of the original size.

CSS Optimization

-83%

Potential reduce by 395.4 kB

  • Original 474.7 kB
  • After minification 464.8 kB
  • After compression 79.4 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. Knigi813.ru needs all CSS files to be minified and compressed as it can save up to 395.4 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 38 (44%)

Requests Now

87

After Optimization

49

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Knigi 813. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 35 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

knigi813.ru

knigi813.ru

679 ms

knigi813.ru

knigi813.ru

547 ms

kernel_main.css

kernel_main.css

284 ms

page_34e4695ce16971e786bdb14763c7ceb9.css

page_34e4695ce16971e786bdb14763c7ceb9.css

280 ms

popup.min.css

popup.min.css

287 ms

template_03a12afc08446db8ef02a9770c806c27.css

template_03a12afc08446db8ef02a9770c806c27.css

689 ms

css

css

29 ms

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PortalUser_06.png

813 ms

logo_white.png

logo_white.png

425 ms

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543 ms

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833 ms

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758 ms

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759 ms

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830 ms

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832 ms

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848 ms

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949 ms

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948 ms

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955 ms

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960 ms

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1082 ms

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1216 ms

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1231 ms

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1245 ms

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1350 ms

core.min.js

core.min.js

1267 ms

core_db.js

core_db.js

1255 ms

core_ajax.min.js

core_ajax.min.js

1109 ms

json2.min.js

json2.min.js

1106 ms

core_ls.min.js

core_ls.min.js

1120 ms

core_fx.min.js

core_fx.min.js

1070 ms

core_frame_cache.min.js

core_frame_cache.min.js

981 ms

jquery-1.8.3.min.js

jquery-1.8.3.min.js

1117 ms

ajax.min.js

ajax.min.js

767 ms

rsasecurity.min.js

rsasecurity.min.js

765 ms

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31 ms

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52 ms

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71 ms

core_window.min.js

core_window.min.js

797 ms

core_currency.min.js

core_currency.min.js

801 ms

checkout.js

checkout.js

821 ms

jquery.actual.min.js

jquery.actual.min.js

849 ms

jqModal.js

jqModal.js

850 ms

jquery.fancybox.js

jquery.fancybox.js

850 ms

jquery.history.js

jquery.history.js

919 ms

jquery.flexslider.js

jquery.flexslider.js

843 ms

jquery.validate.min.js

jquery.validate.min.js

848 ms

jquery.inputmask.bundle.min.js

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846 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

846 ms

equalize.min.js

equalize.min.js

874 ms

jquery.alphanumeric.js

jquery.alphanumeric.js

939 ms

jquery.cookie.js

jquery.cookie.js

847 ms

jquery.plugin.min.js

jquery.plugin.min.js

849 ms

jquery.countdown.min.js

jquery.countdown.min.js

848 ms

jquery.countdown-ru.js

jquery.countdown-ru.js

844 ms

jquery.ikSelect.min.js

jquery.ikSelect.min.js

877 ms

sly.min.js

sly.min.js

939 ms

main.js

main.js

857 ms

script.min.js

script.min.js

850 ms

custom.js

custom.js

850 ms

vk.png

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844 ms

odn.png

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1246 ms

facebook.png

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1236 ms

icons_wish.png

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1131 ms

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1549 ms

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1145 ms

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1096 ms

ba.js

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406 ms

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795 ms

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139 ms

scroll.png

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139 ms

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137 ms

arrows.png

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185 ms

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295 ms

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672 ms

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953 ms

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bx_stat

250 ms

Accessibility Review

knigi813.ru accessibility score

81

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

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

Links do not have a discernible name

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

knigi813.ru best practices score

67

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

Browser errors were logged to the console

SEO Factors

knigi813.ru SEO score

91

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Knigi813.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 Knigi813.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

knigi813.ru

Open Graph description is not detected on the main page of Knigi 813. 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: