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centerfly.pl screenshot

Report Summary

  • 69

    Performance

    Renders faster than
    80% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 80

    SEO

    Google-friendlier than
    42% of websites

centerfly.pl

Tanie loty • Centerfly • Tanie bilety lotnicze, tanie latanie

Page Load Speed

5.8 sec in total

First Response

372 ms

Resources Loaded

5.3 sec

Page Rendered

90 ms

centerfly.pl screenshot

About Website

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

Tanie bilety lotnicze - szybko i intuicyjnie wyszukasz tanie loty gdzie tylko chcesz. Rezerwuj bilety lotnicze na tanie linie lotnicze: Wizzair, Ryanair, EasyJest oraz setki innych. Sprawdź gdzie i ki...

Visit centerfly.pl

Key Findings

We analyzed Centerfly.pl page load time and found that the first response time was 372 ms and then it took 5.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

centerfly.pl performance score

69

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value3.3 s

71/100

25%

SI (Speed Index)

Value5.3 s

58/100

10%

TBT (Total Blocking Time)

Value350 ms

73/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value8.2 s

41/100

10%

Network Requests Diagram

centerfly.pl

372 ms

centerfly.pl

500 ms

www.centerfly.pl

360 ms

www.centerfly.pl

597 ms

moo.min.js

855 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 90% of them (38 requests) were addressed to the original Centerfly.pl, 5% (2 requests) were made to Googletagmanager.com and 2% (1 request) were made to Skybox.eskypartners.com. The less responsive or slowest element that took the longest time to load (2.9 sec) belongs to the original domain Centerfly.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 182.1 kB (55%)

Content Size

330.1 kB

After Optimization

148.0 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Centerfly.pl main page is 330.1 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. 15% of websites need less resources to load. Javascripts take 203.5 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 48.5 kB

  • Original 62.9 kB
  • After minification 57.4 kB
  • After compression 14.4 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 48.5 kB or 77% of the original size.

Image Optimization

-8%

Potential reduce by 5.2 kB

  • Original 63.8 kB
  • After minification 58.6 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. Centerfly images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 128.5 kB

  • Original 203.5 kB
  • After minification 203.4 kB
  • After compression 75.0 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 128.5 kB or 63% of the original size.

Requests Breakdown

Number of requests can be reduced by 25 (68%)

Requests Now

37

After Optimization

12

  • Images
  • JavaScript

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Centerfly. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

centerfly.pl

centerfly.pl

372 ms

centerfly.pl

centerfly.pl

500 ms

www.centerfly.pl

www.centerfly.pl

360 ms

www.centerfly.pl

www.centerfly.pl

597 ms

moo.min.js

moo.min.js

855 ms

center.min.js

center.min.js

737 ms

xajax.js

xajax.js

499 ms

init.js

init.js

46 ms

logo_centerfly.png

logo_centerfly.png

496 ms

centerfly_tel.png

centerfly_tel.png

615 ms

header_tlo3.png

header_tlo3.png

504 ms

warto_wiedziec1.jpg

warto_wiedziec1.jpg

506 ms

tanie_naj_ceny.jpg

tanie_naj_ceny.jpg

729 ms

tanie_wszystko.jpg

tanie_wszystko.jpg

847 ms

Polskie_Linie_Lotnicze_LOT.png

Polskie_Linie_Lotnicze_LOT.png

992 ms

Lufthansa.png

Lufthansa.png

1004 ms

Air_France.png

Air_France.png

1005 ms

British_Airways.png

British_Airways.png

1108 ms

Aer_Lingus.png

Aer_Lingus.png

1223 ms

Czech_Airlines_CSA.png

Czech_Airlines_CSA.png

1342 ms

AirBerlin.png

AirBerlin.png

1486 ms

Wizz_Air.png

Wizz_Air.png

1506 ms

Ryanair.png

Ryanair.png

1504 ms

Easyjet.png

Easyjet.png

1602 ms

Norwegian_Air_Shuttle.png

Norwegian_Air_Shuttle.png

1717 ms

eurolot.png

eurolot.png

1835 ms

veuling.png

veuling.png

1979 ms

flaga_nowy_1.png

flaga_nowy_1.png

2009 ms

bezpieczenstwo.jpg

bezpieczenstwo.jpg

2010 ms

secured_rapid.jpg

secured_rapid.jpg

2097 ms

secured_code.jpg

secured_code.jpg

2211 ms

g.png

g.png

2329 ms

akceptuje_ciasteczka.png

akceptuje_ciasteczka.png

2473 ms

popularne_kierunki.jpg

popularne_kierunki.jpg

2633 ms

czer_kropka.jpg

czer_kropka.jpg

2491 ms

link_arrow.png

link_arrow.png

2578 ms

main_border.png

main_border.png

2683 ms

dol_gora.png

dol_gora.png

2800 ms

jquery.min.js

jquery.min.js

19 ms

gtm.js

gtm.js

62 ms

logo_fb_small.jpg

logo_fb_small.jpg

2944 ms

js

js

49 ms

Accessibility Review

centerfly.pl accessibility score

75

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

Image elements do not have [alt] attributes

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.

Best Practices

centerfly.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

SEO Factors

centerfly.pl SEO score

80

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 doesn't use 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 Centerfly.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 Centerfly.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

centerfly.pl

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