Tools & Wizards About Us
ksiazka.edu.pl screenshot

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

ksiazka.edu.pl

Księgarnia Techniczna | podręczniki akademickie | książki techniczne

Page Load Speed

3.4 sec in total

First Response

387 ms

Resources Loaded

2.7 sec

Page Rendered

298 ms

ksiazka.edu.pl screenshot

About Website

Click here to check amazing Ksiazka content. Otherwise, check out these important facts you probably never knew about ksiazka.edu.pl

Księgarnia Techniczna jest księgarnią internetową. Wysyłamy książki techniczne, a także podręczniki akademickie. Ofertą księgarni są książki wydawnictw uczelni wyższych.

Visit ksiazka.edu.pl

Key Findings

We analyzed Ksiazka.edu.pl page load time and found that the first response time was 387 ms and then it took 3 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

ksiazka.edu.pl performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

22/100

10%

LCP (Largest Contentful Paint)

Value7.6 s

4/100

25%

SI (Speed Index)

Value6.9 s

34/100

10%

TBT (Total Blocking Time)

Value210 ms

89/100

30%

CLS (Cumulative Layout Shift)

Value0.055

98/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

Network Requests Diagram

ksiazka.edu.pl

387 ms

ksiegarnia.edu.pl

810 ms

script.js

121 ms

04740db326.js

105 ms

style.css

298 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Ksiazka.edu.pl, 70% (32 requests) were made to Ksiegarnia.edu.pl and 7% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Ksiegarnia.edu.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 108.5 kB (6%)

Content Size

1.8 MB

After Optimization

1.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ksiazka.edu.pl main page is 1.8 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. Images take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 53.0 kB

  • Original 67.9 kB
  • After minification 61.6 kB
  • After compression 14.9 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 53.0 kB or 78% of the original size.

Image Optimization

-3%

Potential reduce by 54.5 kB

  • Original 1.6 MB
  • After minification 1.6 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. Ksiazka images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 126 B

  • Original 60.8 kB
  • After minification 60.8 kB
  • After compression 60.6 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. This website has mostly compressed JavaScripts.

CSS Optimization

-14%

Potential reduce by 867 B

  • Original 6.2 kB
  • After minification 6.2 kB
  • After compression 5.3 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. Ksiazka.edu.pl needs all CSS files to be minified and compressed as it can save up to 867 B or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (41%)

Requests Now

44

After Optimization

26

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ksiazka. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

ksiazka.edu.pl

ksiazka.edu.pl

387 ms

ksiegarnia.edu.pl

ksiegarnia.edu.pl

810 ms

script.js

script.js

121 ms

04740db326.js

04740db326.js

105 ms

style.css

style.css

298 ms

skrypty.php

skrypty.php

439 ms

all.js

all.js

19 ms

analytics.js

analytics.js

16 ms

collect

collect

13 ms

js

js

78 ms

sklep-opinie_1953.png

sklep-opinie_1953.png

376 ms

0006.jpg

0006.jpg

121 ms

loading.gif

loading.gif

120 ms

domy_24.jpg

domy_24.jpg

372 ms

logo.jpg

logo.jpg

241 ms

lupa.png

lupa.png

358 ms

lupa.png

lupa.png

471 ms

the-modern-modelling-con_5289.jpg

the-modern-modelling-con_5289.jpg

592 ms

koszyk.gif

koszyk.gif

360 ms

przechowalnia.gif

przechowalnia.gif

360 ms

peugeot-406_3371.jpg

peugeot-406_3371.jpg

720 ms

application-of-wavelet-a_47.jpg

application-of-wavelet-a_47.jpg

723 ms

wplyw-kultury-na-aksjolo_5883.jpg

wplyw-kultury-na-aksjolo_5883.jpg

484 ms

uklady-sygnaly-i-zaklocenia-we_8545.jpg

uklady-sygnaly-i-zaklocenia-we_8545.jpg

609 ms

msc-adams-przyklady-obliczen_8640.jpg

msc-adams-przyklady-obliczen_8640.jpg

710 ms

hydraulika-reaktorow-rec_5100.jpg

hydraulika-reaktorow-rec_5100.jpg

840 ms

polski-rocznik-praw-czlo_6061.jpg

polski-rocznik-praw-czlo_6061.jpg

828 ms

meandry-zarzadzania_8423.jpg

meandry-zarzadzania_8423.jpg

732 ms

video-kurs-java-tworzeni_6153.jpg

video-kurs-java-tworzeni_6153.jpg

1065 ms

teatrzyk-dla-przedszkolaka_8736.jpg

teatrzyk-dla-przedszkolaka_8736.jpg

841 ms

slownik-terminologiczny_7935.jpg

slownik-terminologiczny_7935.jpg

1081 ms

modelowanie-procesow-eko_703.jpg

modelowanie-procesow-eko_703.jpg

856 ms

video-kurs-ajax_6184.jpg

video-kurs-ajax_6184.jpg

950 ms

pocket-book-gdansk-gdyni_5322.jpg

pocket-book-gdansk-gdyni_5322.jpg

963 ms

zaopatrzenie-w-wode_8555.jpg

zaopatrzenie-w-wode_8555.jpg

964 ms

plan-pracy-dydaktyczno-wychowawczej-do-autorskiego-programu-nauczania-dla-klas-iv-vi-szkoly-cz_8733.jpg

plan-pracy-dydaktyczno-wychowawczej-do-autorskiego-programu-nauczania-dla-klas-iv-vi-szkoly-cz_8733.jpg

979 ms

planowanie-przestrzenne_2241.jpg

planowanie-przestrzenne_2241.jpg

1072 ms

iqpl.png

iqpl.png

1088 ms

architekt1.png

architekt1.png

1087 ms

all.js

all.js

14 ms

dc.js

dc.js

32 ms

ga.js

ga.js

48 ms

collect

collect

26 ms

45 ms

__utm.gif

__utm.gif

16 ms

__utm.gif

__utm.gif

9 ms

Accessibility Review

ksiazka.edu.pl 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.

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

<input type="image"> elements do not have [alt] text

High

Links do not have a discernible name

Best Practices

ksiazka.edu.pl best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

ksiazka.edu.pl SEO score

91

Search Engine Optimization Advices

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

    ISO-8859-2

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ksiazka.edu.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 Ksiazka.edu.pl main page’s claimed encoding is iso-8859-2. 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

ksiazka.edu.pl

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