Tools & Wizards About Us
ibuk.pl screenshot

Report Summary

  • 26

    Performance

    Renders faster than
    45% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

ibuk.pl

Ebooki i audobooki - kup lub wypożycz - IBUK.pl

Page Load Speed

3.8 sec in total

First Response

286 ms

Resources Loaded

2.7 sec

Page Rendered

876 ms

ibuk.pl screenshot

About Website

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

Największa internetowa wypożyczalnia online w Polsce. Wszystkie dziedziny nauk. Ponad 36 000 od PWN oraz 50 innych wydawców.

Visit ibuk.pl

Key Findings

We analyzed Ibuk.pl page load time and found that the first response time was 286 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

ibuk.pl performance score

26

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

67/100

10%

LCP (Largest Contentful Paint)

Value14.7 s

0/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value2,670 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.034

100/100

15%

TTI (Time to Interactive)

Value13.5 s

11/100

10%

Network Requests Diagram

ibuk.pl

286 ms

www.ibuk.pl

788 ms

074463a789d9cd0418e769c1ea7f034a.css

246 ms

conversion.js

92 ms

c3a65e58187810c4f94e0a9f3e7f3e4d.js

344 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 40% of them (21 requests) were addressed to the original Ibuk.pl, 15% (8 requests) were made to O.ibuk.pl and 6% (3 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (815 ms) relates to the external source Shop-js.buybox.click.

Page Optimization Overview & Recommendations

Page size can be reduced by 158.9 kB (16%)

Content Size

967.3 kB

After Optimization

808.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ibuk.pl main page is 967.3 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. 50% of websites need less resources to load. Images take 444.4 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 130.5 kB

  • Original 160.5 kB
  • After minification 160.5 kB
  • After compression 30.0 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 130.5 kB or 81% of the original size.

Image Optimization

-2%

Potential reduce by 10.8 kB

  • Original 444.4 kB
  • After minification 433.6 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. IBUK images are well optimized though.

JavaScript Optimization

-6%

Potential reduce by 17.2 kB

  • Original 298.7 kB
  • After minification 296.2 kB
  • After compression 281.4 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

-1%

Potential reduce by 385 B

  • Original 63.8 kB
  • After minification 63.8 kB
  • After compression 63.4 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. Ibuk.pl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 31 (63%)

Requests Now

49

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of IBUK. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

ibuk.pl

ibuk.pl

286 ms

www.ibuk.pl

www.ibuk.pl

788 ms

074463a789d9cd0418e769c1ea7f034a.css

074463a789d9cd0418e769c1ea7f034a.css

246 ms

conversion.js

conversion.js

92 ms

c3a65e58187810c4f94e0a9f3e7f3e4d.js

c3a65e58187810c4f94e0a9f3e7f3e4d.js

344 ms

o0dna6db0.js

o0dna6db0.js

800 ms

bb-shop.min.js

bb-shop.min.js

815 ms

gtm.js

gtm.js

173 ms

fbevents.js

fbevents.js

116 ms

181065.jpg

181065.jpg

545 ms

126_99a03616t.jpg

126_99a03616t.jpg

609 ms

140_a68ca73dt.jpg

140_a68ca73dt.jpg

626 ms

128_98aeedadt.jpg

128_98aeedadt.jpg

604 ms

130_87574306t.jpg

130_87574306t.jpg

625 ms

137_dcbbf07bt.jpg

137_dcbbf07bt.jpg

603 ms

abo_close3.png

abo_close3.png

596 ms

abo_check.png

abo_check.png

674 ms

ibuk_new.png

ibuk_new.png

168 ms

loupe.png

loupe.png

238 ms

icon_loupe.png

icon_loupe.png

258 ms

icon_trolley.svg

icon_trolley.svg

371 ms

best_arrow_d.png

best_arrow_d.png

442 ms

greater_than_blue.png

greater_than_blue.png

443 ms

blank.gif

blank.gif

442 ms

background1.png

background1.png

443 ms

discount.png

discount.png

442 ms

discount_big.png

discount_big.png

445 ms

opacity50-10x10.png

opacity50-10x10.png

525 ms

arrow_more_mid.png

arrow_more_mid.png

527 ms

awesome-clock.svg

awesome-clock.svg

530 ms

awesome-phone.svg

awesome-phone.svg

525 ms

material-email.svg

material-email.svg

528 ms

60 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

548 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

531 ms

91 ms

7651a5f7019a1.js

7651a5f7019a1.js

759 ms

js

js

95 ms

6752.js

6752.js

170 ms

analytics.js

analytics.js

68 ms

destination

destination

165 ms

bat.js

bat.js

82 ms

hotjar-3927246.js

hotjar-3927246.js

236 ms

collect

collect

84 ms

collect

collect

122 ms

www.ibuk.pl.json

www.ibuk.pl.json

33 ms

modules.1a30a0a67c3c23c13060.js

modules.1a30a0a67c3c23c13060.js

30 ms

6735f9594d6bb8a4f1fe56c6b3e21cf5.js

6735f9594d6bb8a4f1fe56c6b3e21cf5.js

18 ms

ga-audiences

ga-audiences

91 ms

bb4shop.js

bb4shop.js

356 ms

cmp.php

cmp.php

411 ms

cmp_final.min.js

cmp_final.min.js

40 ms

analytics.js

analytics.js

82 ms

Accessibility Review

ibuk.pl accessibility score

91

Accessibility Issues

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

Links do not have a discernible name

Best Practices

ibuk.pl 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

ibuk.pl SEO score

97

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

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 Ibuk.pl 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 Ibuk.pl 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

ibuk.pl

Open Graph data is detected on the main page of IBUK. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: