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name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

35/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

24/100

25%

SI (Speed Index)

Value11.7 s

4/100

10%

TBT (Total Blocking Time)

Value1,680 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value1.068

2/100

15%

TTI (Time to Interactive)

Value24.4 s

0/100

10%

booksonline.com.ua

624 ms

style.css

321 ms

jquery-1.7.1.min.js

625 ms

jquery-1.4.2.js

341 ms

lessframework.css

177 ms

Our browser made a total of 117 requests to load all elements on the main page. We found that 43% of them (50 requests) were addressed to the original Booksonline.com.ua, 13% (15 requests) were made to Directadvert.ru and 8% (9 requests) were made to Code.directadvert.ru. The less responsive or slowest element that took the longest time to load (1.6 sec) relates to the external source Jsc.marketgid.com.

Content Size

1.5 MB

After Optimization

790.3 kB

In fact, the total size of Booksonline.com.ua main page is 1.5 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. 50% of websites need less resources to load. Images take 691.8 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 489.3 kB

Original 557.3 kB
After minification 534.0 kB
After compression 67.9 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 489.3 kB or 88% of the original size.

Image Optimization

-7%

Potential reduce by 50.3 kB

Original 691.8 kB
After minification 641.4 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. Booksonline images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 125.0 kB

Original 197.3 kB
After minification 162.8 kB
After compression 72.3 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 125.0 kB or 63% of the original size.

CSS Optimization

-82%

Potential reduce by 38.5 kB

Original 47.1 kB
After minification 42.6 kB
After compression 8.6 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. Booksonline.com.ua needs all CSS files to be minified and compressed as it can save up to 38.5 kB or 82% of the original size.

Requests Now

106

After Optimization

The browser has sent 106 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Booksonline. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

[aria-*] attributes do not match their roles

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

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 Booksonline.com.ua 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 Booksonline.com.ua 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

booksonline.com.ua

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Библиотека. Читать онлайн. Бесплатные книги читать онлайн. Читать книги без регистрации. booksonline.com.ua

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

booksonline.com.ua

style.css

jquery-1.7.1.min.js

jquery-1.4.2.js

lessframework.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

booksonline.com.ua

style.css

jquery-1.7.1.min.js

jquery-1.4.2.js

lessframework.css

jRating.jquery.css

skin.css

modernizr.js

share42.js

custom.js

jRating.jquery.js

top100.jcn

show.cgi

back-total.jpg

marketgid_add_link.png

3_1_FFFFFFFF_EFEFEFFF_0_pageviews

manyweb_ru.gif

logo.png

search2.png

bg-head3.jpg

star.png

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