Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% 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 214.5 kB (16%)

Content Size

1.3 MB

After Optimization

1.1 MB

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 600.8 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

-5%

Potential reduce by 30.3 kB

  • Original 600.8 kB
  • After minification 600.8 kB
  • After compression 570.5 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

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.

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

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: