Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

booktrailers.ru

Буктрейлеры - видеоролики по книгам

Page Load Speed

4.4 sec in total

First Response

698 ms

Resources Loaded

3.5 sec

Page Rendered

246 ms

booktrailers.ru screenshot

About Website

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

Буктрейлер - это ролик-миниатюра, тизер, который включает в себя самые яркие и узнаваемые моменты книги, визуализируя ее содержание.

Visit booktrailers.ru

Key Findings

We analyzed Booktrailers.ru page load time and found that the first response time was 698 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

booktrailers.ru performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value6.4 s

10/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value650 ms

46/100

30%

CLS (Cumulative Layout Shift)

Value0.016

100/100

15%

TTI (Time to Interactive)

Value8.3 s

40/100

10%

Network Requests Diagram

booktrailers.ru

698 ms

jquery.js

259 ms

common.js

254 ms

invideo.css

256 ms

common.js

255 ms

Our browser made a total of 86 requests to load all elements on the main page. We found that 86% of them (74 requests) were addressed to the original Booktrailers.ru, 6% (5 requests) were made to Googleads.g.doubleclick.net and 2% (2 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Booktrailers.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 565.8 kB (45%)

Content Size

1.3 MB

After Optimization

686.2 kB

In fact, the total size of Booktrailers.ru main page is 1.3 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. 45% of websites need less resources to load. Javascripts take 782.6 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 59.5 kB

  • Original 73.6 kB
  • After minification 62.8 kB
  • After compression 14.1 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 10.8 kB, which is 15% 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 59.5 kB or 81% of the original size.

Image Optimization

-2%

Potential reduce by 7.5 kB

  • Original 334.1 kB
  • After minification 326.6 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. Booktrailers images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 470.0 kB

  • Original 782.6 kB
  • After minification 782.5 kB
  • After compression 312.5 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 470.0 kB or 60% of the original size.

CSS Optimization

-47%

Potential reduce by 28.8 kB

  • Original 61.7 kB
  • After minification 59.3 kB
  • After compression 32.9 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. Booktrailers.ru needs all CSS files to be minified and compressed as it can save up to 28.8 kB or 47% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (40%)

Requests Now

78

After Optimization

47

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Booktrailers. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

booktrailers.ru accessibility score

89

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

booktrailers.ru best practices score

58

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

booktrailers.ru SEO score

77

Search Engine Optimization Advices

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 Booktrailers.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 Booktrailers.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 Booktrailers. 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: