Tools & Wizards About Us
kolegaberlin.pl screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

kolegaberlin.pl

Oleje silnikowe i filtry samochodowe - sklep kolegaberlin

Page Load Speed

8.5 sec in total

First Response

1.3 sec

Resources Loaded

6.9 sec

Page Rendered

355 ms

kolegaberlin.pl screenshot

About Website

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

Oleje silnikowe Castrol, Mobil, Shell, Motul, Total, Elf - olej silnikowy 5w30, 5w40, 10w40, filtry i żarówki samochodowe, najlepsze ceny i opinie na Allegro.

Visit kolegaberlin.pl

Key Findings

We analyzed Kolegaberlin.pl page load time and found that the first response time was 1.3 sec and then it took 7.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

kolegaberlin.pl performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

50/100

25%

SI (Speed Index)

Value6.8 s

34/100

10%

TBT (Total Blocking Time)

Value1,000 ms

27/100

30%

CLS (Cumulative Layout Shift)

Value0.513

15/100

15%

TTI (Time to Interactive)

Value9.5 s

30/100

10%

Network Requests Diagram

www.kolegaberlin.pl

1300 ms

style.css.gzip

108 ms

shop.js.gzip

428 ms

custom.css.gzip

321 ms

advertising.js

323 ms

Our browser made a total of 270 requests to load all elements on the main page. We found that 91% of them (245 requests) were addressed to the original Kolegaberlin.pl, 2% (6 requests) were made to Fonts.gstatic.com and 2% (5 requests) were made to Widgets.okazje.info.pl. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Kolegaberlin.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 366.6 kB (17%)

Content Size

2.2 MB

After Optimization

1.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kolegaberlin.pl main page is 2.2 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 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 257.0 kB

  • Original 299.4 kB
  • After minification 296.8 kB
  • After compression 42.4 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 257.0 kB or 86% of the original size.

Image Optimization

-5%

Potential reduce by 75.0 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. Kolegaberlin images are well optimized though.

JavaScript Optimization

-17%

Potential reduce by 33.8 kB

  • Original 200.0 kB
  • After minification 200.0 kB
  • After compression 166.2 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 33.8 kB or 17% of the original size.

CSS Optimization

-2%

Potential reduce by 889 B

  • Original 57.4 kB
  • After minification 57.3 kB
  • After compression 56.5 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. Kolegaberlin.pl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 39 (15%)

Requests Now

262

After Optimization

223

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 262 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kolegaberlin. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.kolegaberlin.pl

www.kolegaberlin.pl

1300 ms

style.css.gzip

style.css.gzip

108 ms

shop.js.gzip

shop.js.gzip

428 ms

custom.css.gzip

custom.css.gzip

321 ms

advertising.js

advertising.js

323 ms

pwa_online_bar.js

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324 ms

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662 ms

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44 ms

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648 ms

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637 ms

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638 ms

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637 ms

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636 ms

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642 ms

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648 ms

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637 ms

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635 ms

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637 ms

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634 ms

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642 ms

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648 ms

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637 ms

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636 ms

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636 ms

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634 ms

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643 ms

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648 ms

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638 ms

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638 ms

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639 ms

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637 ms

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642 ms

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648 ms

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637 ms

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639 ms

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639 ms

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637 ms

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643 ms

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648 ms

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638 ms

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639 ms

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637 ms

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637 ms

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643 ms

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648 ms

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638 ms

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638 ms

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638 ms

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637 ms

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643 ms

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648 ms

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638 ms

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637 ms

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638 ms

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637 ms

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643 ms

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647 ms

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638 ms

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638 ms

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639 ms

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636 ms

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644 ms

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647 ms

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638 ms

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638 ms

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637 ms

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637 ms

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643 ms

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647 ms

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637 ms

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637 ms

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638 ms

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637 ms

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643 ms

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647 ms

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638 ms

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637 ms

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638 ms

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636 ms

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644 ms

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648 ms

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638 ms

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638 ms

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638 ms

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635 ms

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643 ms

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648 ms

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Accessibility Review

kolegaberlin.pl accessibility score

86

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

[id] attributes on active, focusable elements are not unique

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

kolegaberlin.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

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

kolegaberlin.pl SEO score

79

Search Engine Optimization Advices

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 Kolegaberlin.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 Kolegaberlin.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

kolegaberlin.pl

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