Tools & Wizards About Us
ksiazki.org screenshot

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 81

    SEO

    Google-friendlier than
    43% of websites

ksiazki.org

edugaleria.pl

Page Load Speed

12.6 sec in total

First Response

1.7 sec

Resources Loaded

10.6 sec

Page Rendered

238 ms

ksiazki.org screenshot

About Website

Visit ksiazki.org now to see the best up-to-date Ksiazki content for Poland and also check out these interesting facts you probably never knew about ksiazki.org

Sprawdź naszą ofertę książek i zabawek na edugaleria.pl

Visit ksiazki.org

Key Findings

We analyzed Ksiazki.org page load time and found that the first response time was 1.7 sec and then it took 10.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

ksiazki.org performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.5 s

0/100

10%

LCP (Largest Contentful Paint)

Value14.2 s

0/100

25%

SI (Speed Index)

Value16.5 s

0/100

10%

TBT (Total Blocking Time)

Value1,710 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.158

73/100

15%

TTI (Time to Interactive)

Value24.9 s

0/100

10%

Network Requests Diagram

ksiazki.org

1726 ms

bootstrap.min.css

556 ms

bootstrap-theme.min.css

340 ms

mc_layout_v4.css

351 ms

mc_colours.css

351 ms

Our browser made a total of 151 requests to load all elements on the main page. We found that 98% of them (148 requests) were addressed to the original Ksiazki.org, 1% (2 requests) were made to Google-analytics.com and 1% (1 request) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (2.9 sec) belongs to the original domain Ksiazki.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.5 MB (32%)

Content Size

4.7 MB

After Optimization

3.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ksiazki.org main page is 4.7 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 3.0 MB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 959.0 kB

  • Original 1.0 MB
  • After minification 809.2 kB
  • After compression 79.3 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 229.2 kB, which is 22% 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 959.0 kB or 92% of the original size.

Image Optimization

-1%

Potential reduce by 20.8 kB

  • Original 3.0 MB
  • After minification 2.9 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. Ksiazki images are well optimized though.

JavaScript Optimization

-76%

Potential reduce by 405.0 kB

  • Original 532.6 kB
  • After minification 417.7 kB
  • After compression 127.6 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 405.0 kB or 76% of the original size.

CSS Optimization

-82%

Potential reduce by 139.6 kB

  • Original 169.3 kB
  • After minification 149.9 kB
  • After compression 29.7 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. Ksiazki.org needs all CSS files to be minified and compressed as it can save up to 139.6 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 41 (28%)

Requests Now

149

After Optimization

108

  • Images
  • JavaScript
  • CSS

The browser has sent 149 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ksiazki. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

ksiazki.org

ksiazki.org

1726 ms

bootstrap.min.css

bootstrap.min.css

556 ms

bootstrap-theme.min.css

bootstrap-theme.min.css

340 ms

mc_layout_v4.css

mc_layout_v4.css

351 ms

mc_colours.css

mc_colours.css

351 ms

kontener_towarowy.css

kontener_towarowy.css

350 ms

style.css

style.css

446 ms

userStyles.css

userStyles.css

451 ms

jquery-1.10.2.min.js

jquery-1.10.2.min.js

682 ms

wsvalidator.js

wsvalidator.js

455 ms

stickUp.min.js

stickUp.min.js

455 ms

jquery.mb.browser.js

jquery.mb.browser.js

564 ms

jquery.als-1.7.js

jquery.als-1.7.js

565 ms

kontener_towarowy.js

kontener_towarowy.js

570 ms

bootstrap-hover-dropdown.js

bootstrap-hover-dropdown.js

570 ms

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jsKoszyk.js

660 ms

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jsPopover.js

665 ms

spectrum.js

spectrum.js

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spectrum.css

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680 ms

jquery.lazyload.js

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681 ms

mcookies.css

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771 ms

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561 ms

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579 ms

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580 ms

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582 ms

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582 ms

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665 ms

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670 ms

script.js

script.js

568 ms

bootstrap.min.js

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571 ms

jsUpdateProgress.js

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569 ms

newsletter.js

newsletter.js

570 ms

reklamaWysuwanyPrzycisk.js

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653 ms

ksiazki.org

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1576 ms

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582 ms

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583 ms

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Accessibility Review

ksiazki.org accessibility score

59

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 input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[role]s are not contained by their required parent element

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

Image elements do not have [alt] attributes

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.

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

ksiazki.org 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

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

ksiazki.org SEO score

81

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    PL

  • Language Claimed

    PL

  • Encoding

    UTF-8

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

ksiazki.org

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