Tools & Wizards About Us

Report Summary

  • 70

    Performance

    Renders faster than
    81% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

buklib.net

Головна - Бібліотека BukLib.net

Page Load Speed

2.4 sec in total

First Response

827 ms

Resources Loaded

1.4 sec

Page Rendered

200 ms

About Website

Welcome to buklib.net homepage info - get ready to check Buk Lib best content for Ukraine right away, or after learning these important things about buklib.net

Безкоштовна онлайн-бібліотека Букліб - тут зібрані підручники та книги для студентів та школярів

Visit buklib.net

Key Findings

We analyzed Buklib.net page load time and found that the first response time was 827 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

buklib.net performance score

70

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

69/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

30/100

25%

SI (Speed Index)

Value3.6 s

86/100

10%

TBT (Total Blocking Time)

Value300 ms

79/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value4.7 s

80/100

10%

Network Requests Diagram

buklib.net

827 ms

style.css

201 ms

template_efa45d7d1524d985fe0fa02efc679bc9_v1.js

204 ms

page_31bcf105c3c6b87f123d705c38abc3fc_v1.js

204 ms

style.css

207 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 60% of them (18 requests) were addressed to the original Buklib.net, 17% (5 requests) were made to Fonts.gstatic.com and 7% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (827 ms) belongs to the original domain Buklib.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 140.4 kB (46%)

Content Size

308.2 kB

After Optimization

167.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Buklib.net main page is 308.2 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. 45% of websites need less resources to load. HTML takes 155.5 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 135.9 kB

  • Original 155.5 kB
  • After minification 109.7 kB
  • After compression 19.6 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 45.8 kB, which is 29% 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 135.9 kB or 87% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 61.4 kB
  • After minification 61.4 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. Buk Lib images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 2.9 kB

  • Original 80.0 kB
  • After minification 79.8 kB
  • After compression 77.1 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

-14%

Potential reduce by 1.6 kB

  • Original 11.3 kB
  • After minification 11.3 kB
  • After compression 9.7 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. Buklib.net needs all CSS files to be minified and compressed as it can save up to 1.6 kB or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (62%)

Requests Now

21

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 21 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Buk Lib. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

buklib.net accessibility score

62

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

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

Form elements do not have associated labels

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

buklib.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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

buklib.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

    UK

  • Language Claimed

    UK

  • Encoding

    WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Buklib.net can be misinterpreted by Google and other search engines. Our service has detected that Ukrainian is used on the page, and it matches the claimed language. Our system also found out that Buklib.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 Buk Lib. 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: