Tools & Wizards About Us
levneletenky.cz screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

levneletenky.cz

Levné letenky online do celého světa i za akcniceny na Levneletenky.cz

Page Load Speed

30.4 sec in total

First Response

3.6 sec

Resources Loaded

25.8 sec

Page Rendered

1 sec

levneletenky.cz screenshot

About Website

Visit levneletenky.cz now to see the best up-to-date Levneletenky content for Czech Republic and also check out these interesting facts you probably never knew about levneletenky.cz

Už si pomalu plánujete, kam byste mohli vyrazit v létě na dovolenou? Žádná cestovní kancelář, chcete jet sami? Pak se budou hodit levné letenky!

Visit levneletenky.cz

Key Findings

We analyzed Levneletenky.cz page load time and found that the first response time was 3.6 sec and then it took 26.8 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

levneletenky.cz performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

53/100

10%

LCP (Largest Contentful Paint)

Value8.0 s

2/100

25%

SI (Speed Index)

Value7.8 s

24/100

10%

TBT (Total Blocking Time)

Value1,310 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.078

95/100

15%

TTI (Time to Interactive)

Value13.2 s

12/100

10%

Network Requests Diagram

levneletenky.cz

3633 ms

autoptimize_b785b582fa7218d1dd423a63ff46c687.css

912 ms

jquery.js

433 ms

app.min.js

312 ms

js

68 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 13% of them (12 requests) were addressed to the original Levneletenky.cz, 66% (60 requests) were made to Sp-ao.shortpixel.ai and 7% (6 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (20.4 sec) relates to the external source Sp-ao.shortpixel.ai.

Page Optimization Overview & Recommendations

Page size can be reduced by 205.7 kB (16%)

Content Size

1.3 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Levneletenky.cz 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. 55% of websites need less resources to load. Javascripts take 553.6 kB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 183.5 kB

  • Original 200.0 kB
  • After minification 199.2 kB
  • After compression 16.5 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 183.5 kB or 92% of the original size.

Image Optimization

-0%

Potential reduce by 68 B

  • Original 308.2 kB
  • After minification 308.2 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. Levneletenky images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 21.4 kB

  • Original 553.6 kB
  • After minification 553.6 kB
  • After compression 532.3 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

-0%

Potential reduce by 677 B

  • Original 223.3 kB
  • After minification 223.3 kB
  • After compression 222.6 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. Levneletenky.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 9 (12%)

Requests Now

77

After Optimization

68

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 77 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Levneletenky. 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 as a result speed up the page load time.

Network Requests Diagram

levneletenky.cz

levneletenky.cz

3633 ms

autoptimize_b785b582fa7218d1dd423a63ff46c687.css

autoptimize_b785b582fa7218d1dd423a63ff46c687.css

912 ms

jquery.js

jquery.js

433 ms

app.min.js

app.min.js

312 ms

js

js

68 ms

lazysizes.min.js

lazysizes.min.js

129 ms

autoptimize_28d450c9526e438c7eae8e973739dfda.js

autoptimize_28d450c9526e438c7eae8e973739dfda.js

1072 ms

webfont.js

webfont.js

548 ms

logotype3.png

logotype3.png

557 ms

logo-2.png

logo-2.png

546 ms

Chorvatsko-e1565958374127.jpg

Chorvatsko-e1565958374127.jpg

551 ms

Lisabon-e1565958328468.jpg

Lisabon-e1565958328468.jpg

549 ms

Moskva-e1565958277233.jpg

Moskva-e1565958277233.jpg

545 ms

Phuket-e1565958168504.jpg

Phuket-e1565958168504.jpg

737 ms

Bangkok-e1565958401205.jpg

Bangkok-e1565958401205.jpg

735 ms

Hanoi-e1565958360529.jpg

Hanoi-e1565958360529.jpg

732 ms

Ho-chi-minh-e1565958343400.jpg

Ho-chi-minh-e1565958343400.jpg

730 ms

Havana.jpg

Havana.jpg

738 ms

Rusko-e1565958198155.jpg

Rusko-e1565958198155.jpg

729 ms

Barcelona-e1565958388577.jpg

Barcelona-e1565958388577.jpg

819 ms

Rim-e1565958217284.jpg

Rim-e1565958217284.jpg

811 ms

Varadero.jpg

Varadero.jpg

805 ms

Bali-e1565958416509.jpg

Bali-e1565958416509.jpg

814 ms

Maledivy-e1565958310906.jpg

Maledivy-e1565958310906.jpg

808 ms

Mauricius-e1565958292990.jpg

Mauricius-e1565958292990.jpg

785 ms

New-York-e1565958262313.jpg

New-York-e1565958262313.jpg

907 ms

Los-Angeles.jpg

Los-Angeles.jpg

934 ms

Paris-e1565958234281.jpg

Paris-e1565958234281.jpg

931 ms

Nice-e1565958248484.jpg

Nice-e1565958248484.jpg

923 ms

Amsterdam-e1565958428110.jpg

Amsterdam-e1565958428110.jpg

921 ms

1-Koh-Samui.jpg

1-Koh-Samui.jpg

944 ms

3-Phu-Quoc.jpg

3-Phu-Quoc.jpg

1043 ms

4-Miami.jpg

4-Miami.jpg

1039 ms

5-Kahira.jpg

5-Kahira.jpg

1032 ms

6-Marsa-Alam.jpg

6-Marsa-Alam.jpg

1054 ms

7-hurghada.jpg

7-hurghada.jpg

1047 ms

8-Seam-Reap.jpg

8-Seam-Reap.jpg

1061 ms

9-Dubrovnik.jpg

9-Dubrovnik.jpg

1188 ms

10-Split.jpg

10-Split.jpg

1156 ms

11-Burgas.jpg

11-Burgas.jpg

1159 ms

12-Paris.jpg

12-Paris.jpg

1163 ms

13-Varna.jpg

13-Varna.jpg

1174 ms

14-Sofie.jpg

14-Sofie.jpg

1185 ms

15-Malta.jpg

15-Malta.jpg

1269 ms

1111.jpg

1111.jpg

1455 ms

fa-solid-900.woff

fa-solid-900.woff

449 ms

fa-regular-400.woff

fa-regular-400.woff

449 ms

ElegantIcons.woff

ElegantIcons.woff

929 ms

tag.js

tag.js

1123 ms

js

js

384 ms

analytics.js

analytics.js

379 ms

loader.js

loader.js

317 ms

css

css

30 ms

16-Faro.jpg

16-Faro.jpg

723 ms

17-Porto.jpg

17-Porto.jpg

728 ms

18-Lisabon.jpg

18-Lisabon.jpg

718 ms

19-Rhodos.jpg

19-Rhodos.jpg

759 ms

20-Solun.jpg

20-Solun.jpg

737 ms

pxiEyp8kv8JHgFVrJJfedw.ttf

pxiEyp8kv8JHgFVrJJfedw.ttf

54 ms

pxiByp8kv8JHgFVrLGT9Z1xlEA.ttf

pxiByp8kv8JHgFVrLGT9Z1xlEA.ttf

55 ms

pxiByp8kv8JHgFVrLDz8Z1xlEA.ttf

pxiByp8kv8JHgFVrLDz8Z1xlEA.ttf

55 ms

pxiByp8kv8JHgFVrLEj6Z1xlEA.ttf

pxiByp8kv8JHgFVrLEj6Z1xlEA.ttf

55 ms

pxiByp8kv8JHgFVrLCz7Z1xlEA.ttf

pxiByp8kv8JHgFVrLCz7Z1xlEA.ttf

93 ms

pxiByp8kv8JHgFVrLDD4Z1xlEA.ttf

pxiByp8kv8JHgFVrLDD4Z1xlEA.ttf

93 ms

collect

collect

126 ms

21-Kiev.jpg

21-Kiev.jpg

718 ms

22-Hongkong.jpg

22-Hongkong.jpg

713 ms

23-Palermo.jpg

23-Palermo.jpg

716 ms

24-Rimini.jpg

24-Rimini.jpg

707 ms

25-Peking.jpg

25-Peking.jpg

715 ms

26-shanghai.jpg

26-shanghai.jpg

686 ms

27-heraklion.jpg

27-heraklion.jpg

684 ms

28-Kos.jpg

28-Kos.jpg

696 ms

29-Minsk.jpg

29-Minsk.jpg

689 ms

30-Atheny.jpg

30-Atheny.jpg

693 ms

31-Chania.jpg

31-Chania.jpg

731 ms

colombo.jpg

colombo.jpg

20379 ms

logo-1.png

logo-1.png

665 ms

logotype3.png

logotype3.png

701 ms

logo-2.png

logo-2.png

698 ms

advert.gif

advert.gif

671 ms

benatky.jpg

benatky.jpg

3313 ms

londyn.jpg

londyn.jpg

3818 ms

milano.jpg

milano.jpg

4332 ms

sync_cookie_image_decide

sync_cookie_image_decide

143 ms

1

1

142 ms

1

1

276 ms

Chorvatsko-e1565958374127.jpg

Chorvatsko-e1565958374127.jpg

113 ms

Lisabon-e1565958328468.jpg

Lisabon-e1565958328468.jpg

131 ms

Moskva-e1565958277233.jpg

Moskva-e1565958277233.jpg

210 ms

Phuket-e1565958168504.jpg

Phuket-e1565958168504.jpg

137 ms

Accessibility Review

levneletenky.cz 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

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

Links do not have a discernible name

Best Practices

levneletenky.cz 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

levneletenky.cz SEO score

84

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Document doesn't have a valid hreflang

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

    CS

  • Language Claimed

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Levneletenky.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it matches the claimed language. Our system also found out that Levneletenky.cz 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

levneletenky.cz

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