Tools & Wizards About Us

Report Summary

  • 65

    Performance

    Renders faster than
    78% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 39% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

bookler.ru

Купить книги на Bookler.ru. Сервис поиска лучшей цены в книжных интернет магазинах. Книги почтой, продажа книг, заказ книг.

Page Load Speed

3.6 sec in total

First Response

504 ms

Resources Loaded

3 sec

Page Rendered

114 ms

About Website

Click here to check amazing Bookler content for Russia. Otherwise, check out these important facts you probably never knew about bookler.ru

Сервис поиска лучшей цены на книги, поиска книг и продажи литературы. Более 2х миллионов книг, десятки лучших магазинов. РАСШИРЕННЫЙ ПОИСК по автору, ISBN, издательству.

Visit bookler.ru

Key Findings

We analyzed Bookler.ru page load time and found that the first response time was 504 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

bookler.ru performance score

65

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

40/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

15/100

25%

SI (Speed Index)

Value4.1 s

80/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value7.1 s

52/100

10%

Network Requests Diagram

bookler.ru

504 ms

bookler.ru

567 ms

main.css

743 ms

jquery.fancybox.css

629 ms

slick.css

673 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that 92% of them (24 requests) were addressed to the original Bookler.ru, 4% (1 request) were made to Connect.facebook.net and 4% (1 request) were made to Vk.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Bookler.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 66.2 kB (19%)

Content Size

347.0 kB

After Optimization

280.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Bookler.ru main page is 347.0 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. 40% of websites need less resources to load. Javascripts take 160.3 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 30.6 kB

  • Original 36.2 kB
  • After minification 22.4 kB
  • After compression 5.5 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 13.8 kB, which is 38% 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 30.6 kB or 85% of the original size.

Image Optimization

-5%

Potential reduce by 6.0 kB

  • Original 125.6 kB
  • After minification 119.5 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. Bookler images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 22.0 kB

  • Original 160.3 kB
  • After minification 160.0 kB
  • After compression 138.3 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 22.0 kB or 14% of the original size.

CSS Optimization

-30%

Potential reduce by 7.5 kB

  • Original 24.9 kB
  • After minification 24.9 kB
  • After compression 17.4 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. Bookler.ru needs all CSS files to be minified and compressed as it can save up to 7.5 kB or 30% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (68%)

Requests Now

22

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 22 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bookler. 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 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

bookler.ru accessibility score

73

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.

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

bookler.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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

bookler.ru SEO score

85

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

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

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1251

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