Report Summary

  • 21

    Performance

    Renders faster than
    41% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    29% of websites

  • 90

    SEO

    Google-friendlier than
    73% of websites

upolujebooka.pl

Tanie ebooki online na czytnik kindle, kobo, pocketbook (pdf,mobi,epub)

Page Load Speed

4.8 sec in total

First Response

677 ms

Resources Loaded

3.8 sec

Page Rendered

365 ms

upolujebooka.pl screenshot

About Website

Welcome to upolujebooka.pl homepage info - get ready to check Upolujebooka best content for Poland right away, or after learning these important things about upolujebooka.pl

Największa uporządkowana baza ebooków w Polsce, najtańsze ebooki online które możecie pobrać prawie za darmo na swoje czytniki w formacie PDF, EPUB, MOBI (kindle)

Visit upolujebooka.pl

Key Findings

We analyzed Upolujebooka.pl page load time and found that the first response time was 677 ms and then it took 4.2 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

upolujebooka.pl performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value9.2 s

1/100

25%

SI (Speed Index)

Value5.3 s

59/100

10%

TBT (Total Blocking Time)

Value1,670 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.411

24/100

15%

TTI (Time to Interactive)

Value9.1 s

33/100

10%

Network Requests Diagram

upolujebooka.pl

677 ms

css

33 ms

jquery.min.js

32 ms

_main.js

231 ms

function.js

232 ms

Our browser made a total of 154 requests to load all elements on the main page. We found that 88% of them (136 requests) were addressed to the original Upolujebooka.pl, 2% (3 requests) were made to Fonts.gstatic.com and 2% (3 requests) were made to Facebook.com. The less responsive or slowest element that took the longest time to load (941 ms) belongs to the original domain Upolujebooka.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 243.8 kB (18%)

Content Size

1.3 MB

After Optimization

1.1 MB

In fact, the total size of Upolujebooka.pl 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. 65% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 129.6 kB

  • Original 162.3 kB
  • After minification 142.7 kB
  • After compression 32.6 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 19.5 kB, which is 12% 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 129.6 kB or 80% of the original size.

Image Optimization

-5%

Potential reduce by 56.3 kB

  • Original 1.1 MB
  • After minification 1.0 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. Upolujebooka images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 57.5 kB

  • Original 96.5 kB
  • After minification 79.5 kB
  • After compression 39.0 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 57.5 kB or 60% of the original size.

CSS Optimization

-63%

Potential reduce by 411 B

  • Original 653 B
  • After minification 587 B
  • After compression 242 B

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. Upolujebooka.pl needs all CSS files to be minified and compressed as it can save up to 411 B or 63% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (16%)

Requests Now

149

After Optimization

125

The browser has sent 149 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Upolujebooka. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

upolujebooka.pl accessibility score

89

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

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

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

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

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

Best Practices

upolujebooka.pl 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

upolujebooka.pl SEO score

90

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

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 Upolujebooka.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 Upolujebooka.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

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