Tools & Wizards About Us
tbooker.de screenshot

Report Summary

  • 33

    Performance

    Renders faster than
    54% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    57% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

tbooker.de

Billige Flüge bei airline direct | Günstige Flug Angebote & Flugreisen | airline-direct.de

Page Load Speed

6.5 sec in total

First Response

260 ms

Resources Loaded

4.8 sec

Page Rendered

1.4 sec

tbooker.de screenshot

About Website

Welcome to tbooker.de homepage info - get ready to check Tbooker best content for Germany right away, or after learning these important things about tbooker.de

Günstige Flüge zu weltweiten Destinationen finden Sie auf airline-direct.de! Vergleich der Flugpreise von über 550 Airlines und Billig Airlines.

Visit tbooker.de

Key Findings

We analyzed Tbooker.de page load time and found that the first response time was 260 ms and then it took 6.3 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

tbooker.de performance score

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value7.5 s

4/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value980 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value10.4 s

24/100

10%

Network Requests Diagram

tbooker.de

260 ms

tbooker.de

393 ms

www.airline-direct.de

723 ms

airline-direct.de___index___da24b13a.css

522 ms

airlines___da24b13a.css

330 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 5% of them (2 requests) were addressed to the original Tbooker.de, 50% (19 requests) were made to Static.airline-direct.de and 11% (4 requests) were made to Tr-s.airline-direct.de. The less responsive or slowest element that took the longest time to load (958 ms) relates to the external source Tr-s.airline-direct.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 211.9 kB (11%)

Content Size

1.9 MB

After Optimization

1.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tbooker.de main page is 1.9 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. 70% of websites need less resources to load. Images take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 200.6 kB

  • Original 242.4 kB
  • After minification 242.3 kB
  • After compression 41.8 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 200.6 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • 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. Tbooker images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 11.2 kB

  • Original 73.5 kB
  • After minification 72.7 kB
  • After compression 62.3 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 11.2 kB or 15% of the original size.

CSS Optimization

-0%

Potential reduce by 65 B

  • Original 19.1 kB
  • After minification 19.1 kB
  • After compression 19.0 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. Tbooker.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 13 (39%)

Requests Now

33

After Optimization

20

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tbooker. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

tbooker.de

tbooker.de

260 ms

tbooker.de

tbooker.de

393 ms

www.airline-direct.de

www.airline-direct.de

723 ms

airline-direct.de___index___da24b13a.css

airline-direct.de___index___da24b13a.css

522 ms

airlines___da24b13a.css

airlines___da24b13a.css

330 ms

loader___da24b13a.js

loader___da24b13a.js

333 ms

main___da24b13a.js

main___da24b13a.js

251 ms

sponge_index___da24b13a.js

sponge_index___da24b13a.js

249 ms

10120.js

10120.js

642 ms

cti_airlinedirect.js

cti_airlinedirect.js

252 ms

postscribe___da24b13a.js

postscribe___da24b13a.js

201 ms

brandSprite__da24b13a.png

brandSprite__da24b13a.png

150 ms

pixel.gif

pixel.gif

140 ms

sponge__da24b13a.woff

sponge__da24b13a.woff

52 ms

dc.js

dc.js

389 ms

uc.js

uc.js

307 ms

gtm.js

gtm.js

958 ms

1__da24b13a.jpg

1__da24b13a.jpg

138 ms

OSL__da24b13a.jpg

OSL__da24b13a.jpg

49 ms

NCE__da24b13a.jpg

NCE__da24b13a.jpg

858 ms

DXB__da24b13a.jpg

DXB__da24b13a.jpg

78 ms

BOS__da24b13a.jpg

BOS__da24b13a.jpg

51 ms

PMI__da24b13a.jpg

PMI__da24b13a.jpg

83 ms

SUF__da24b13a.jpg

SUF__da24b13a.jpg

78 ms

strandurlaub__da24b13a.jpg

strandurlaub__da24b13a.jpg

78 ms

berg__da24b13a.jpg

berg__da24b13a.jpg

78 ms

city__da24b13a.jpg

city__da24b13a.jpg

83 ms

__utm.gif

__utm.gif

42 ms

cc.js

cc.js

116 ms

bc-v4.min.html

bc-v4.min.html

81 ms

ga-audiences

ga-audiences

61 ms

__utm.gif

__utm.gif

95 ms

core.js

core.js

81 ms

js

js

612 ms

analytics.js

analytics.js

510 ms

main.3d8f5f3a.js

main.3d8f5f3a.js

21 ms

104 ms

collect

collect

366 ms

Accessibility Review

tbooker.de accessibility score

81

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

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

tbooker.de best practices score

83

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

Missing source maps for large first-party JavaScript

SEO Factors

tbooker.de SEO score

77

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

High

Page is blocked from indexing

High

robots.txt is not valid

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

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

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

tbooker.de

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