Tools & Wizards About Us
window.seatonly.nl screenshot

Report Summary

  • 26

    Performance

    Renders faster than
    45% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

window.seatonly.nl

TUI fly vliegtickets - boek goedkope vliegtickets online | TUI

Page Load Speed

4.1 sec in total

First Response

315 ms

Resources Loaded

3.5 sec

Page Rendered

334 ms

window.seatonly.nl screenshot

About Website

Welcome to window.seatonly.nl homepage info - get ready to check Window Seatonly best content right away, or after learning these important things about window.seatonly.nl

Met onze goedkope vliegtickets vlieg je comfortabel naar je bestemming. Meer dan 60 bestemmingen in Europa, Caribisch gebied, Noord- en Zuid-Amerika en Afrika.

Visit window.seatonly.nl

Key Findings

We analyzed Window.seatonly.nl page load time and found that the first response time was 315 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

window.seatonly.nl performance score

26

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

59/100

25%

SI (Speed Index)

Value7.7 s

25/100

10%

TBT (Total Blocking Time)

Value4,240 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.382

27/100

15%

TTI (Time to Interactive)

Value16.1 s

6/100

10%

Network Requests Diagram

window.seatonly.nl

315 ms

818 ms

main.min.css

839 ms

flight-subhome.min.css

421 ms

9fba727e745b982a58195ffeea26a9db3200111bb061

31 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Window.seatonly.nl, 53% (25 requests) were made to Tui.nl and 11% (5 requests) were made to . The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Tui.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (45%)

Content Size

2.4 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Window.seatonly.nl main page is 2.4 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. Javascripts take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-30%

Potential reduce by 131.4 kB

  • Original 444.3 kB
  • After minification 441.8 kB
  • After compression 312.9 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 131.4 kB or 30% of the original size.

Image Optimization

-2%

Potential reduce by 9.2 kB

  • Original 450.4 kB
  • After minification 441.2 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. Window Seatonly images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 935.9 kB

  • Original 1.5 MB
  • After minification 1.4 MB
  • After compression 538.3 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 935.9 kB or 63% of the original size.

CSS Optimization

-0%

Potential reduce by 163 B

  • Original 38.5 kB
  • After minification 38.5 kB
  • After compression 38.3 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. Window.seatonly.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 16 (42%)

Requests Now

38

After Optimization

22

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Window Seatonly. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

window.seatonly.nl

window.seatonly.nl

315 ms

818 ms

main.min.css

main.min.css

839 ms

flight-subhome.min.css

flight-subhome.min.css

421 ms

9fba727e745b982a58195ffeea26a9db3200111bb061

9fba727e745b982a58195ffeea26a9db3200111bb061

31 ms

08507cc3e8ab20004e7e85b724b77f718b8d4b9a8a25bd1e81e20fb26a7fdd7b120fc8237effb39f

08507cc3e8ab20004e7e85b724b77f718b8d4b9a8a25bd1e81e20fb26a7fdd7b120fc8237effb39f

599 ms

router.min.js

router.min.js

579 ms

tui-header-nl-NL.js

tui-header-nl-NL.js

1185 ms

adobetargetdesktop.js

adobetargetdesktop.js

1166 ms

main.js

main.js

1241 ms

tui-core.js

tui-core.js

1242 ms

tui-marketing.js

tui-marketing.js

907 ms

tickets-core.js

tickets-core.js

914 ms

gigya.js

gigya.js

129 ms

epageo-flights.js

epageo-flights.js

1081 ms

kIns

kIns

923 ms

id

id

55 ms

flight.jpg

flight.jpg

297 ms

curacao2.jpg

curacao2.jpg

502 ms

spanje.jpg

spanje.jpg

441 ms

kaapverdie2.jpg

kaapverdie2.jpg

284 ms

aruba.jpg

aruba.jpg

279 ms

mexico2.jpg

mexico2.jpg

315 ms

bonaire.jpg

bonaire.jpg

573 ms

griekenland5.jpg

griekenland5.jpg

686 ms

dominican2.jpg

dominican2.jpg

575 ms

utag.js

utag.js

102 ms

dest5.html

dest5.html

186 ms

id

id

206 ms

kAj8AAAAA1oOENgABWl3TtgAA

kAj8AAAAA1oOENgABWl3TtgAA

11 ms

iN53QAAAAFaXdThAAA=

iN53QAAAAFaXdThAAA=

11 ms

XXNjQDPRbeH6oNPprDD1OpUq+9S9z6Usa1GPPFBqSl3pUrqVHmWxskRZqvzXz2uqqb6aZq8N+sOhmuqqpoB5pBumHsNSGQ41tAaPUd6i4TPniKgrXUr3X2NVn3kAAAB42j3MPQrCQBQE4N2s2cQ1f2paIdbvGiaFAQkWsguWggcQbLWx1LO8iIVYeRRvEp+6bjffMMyddyfkZ1Zj2OiW84tpKwl6ipmpMV9SOJoJSlhrhqIoUcAMZVFexc2DL3yC3Fj0CP7cIvjMnhYhIVhZ9Anh+AeOyt5G1KqtB62o9sQBMQLHuCgfTB065pqEBvHLMSUmO8eMmC4ch8Rs9KfBHN6vOkj2AAA=

XXNjQDPRbeH6oNPprDD1OpUq+9S9z6Usa1GPPFBqSl3pUrqVHmWxskRZqvzXz2uqqb6aZq8N+sOhmuqqpoB5pBumHsNSGQ41tAaPUd6i4TPniKgrXUr3X2NVn3kAAAB42j3MPQrCQBQE4N2s2cQ1f2paIdbvGiaFAQkWsguWggcQbLWx1LO8iIVYeRRvEp+6bjffMMyddyfkZ1Zj2OiW84tpKwl6ipmpMV9SOJoJSlhrhqIoUcAMZVFexc2DL3yC3Fj0CP7cIvjMnhYhIVhZ9Anh+AeOyt5G1KqtB62o9sQBMQLHuCgfTB065pqEBvHLMSUmO8eMmC4ch8Rs9KfBHN6vOkj2AAA=

10 ms

wAPeNpjYGRgYOABYjEgZmJgBMJfQMwC5jEAAA5cASkAAAB42mNgYGBkAIJ7bFp5IPqReNhmGA0ANqkFggAA

wAPeNpjYGRgYOABYjEgZmJgBMJfQMwC5jEAAA5cASkAAAB42mNgYGBkAIJ7bFp5IPqReNhmGA0ANqkFggAA

9 ms

tui-flash-deal-25313-1002x350.jpg

tui-flash-deal-25313-1002x350.jpg

856 ms

sprite-travelclasses.png

sprite-travelclasses.png

515 ms

vliegen-met-tui-fly-22040-1002x350.jpg

vliegen-met-tui-fly-22040-1002x350.jpg

861 ms

nieuw-zanzibar-25329-1002x350.jpg

nieuw-zanzibar-25329-1002x350.jpg

789 ms

radients.jpg

radients.jpg

645 ms

AA==

AA==

15 ms

wcc-widget.min.js

wcc-widget.min.js

149 ms

tui-searchheader.js

tui-searchheader.js

526 ms

pixel

pixel

48 ms

ibs:dpid=411&dpuuid=ZkkRowAAAKyhVgN2

ibs:dpid=411&dpuuid=ZkkRowAAAKyhVgN2

10 ms

json

json

38 ms

pixel

pixel

23 ms

ibs:dpid=771&dpuuid=CAESENqaSV7VtQejCOJvOOBI_-k&google_cver=1

ibs:dpid=771&dpuuid=CAESENqaSV7VtQejCOJvOOBI_-k&google_cver=1

19 ms

gtm.js

gtm.js

140 ms

Accessibility Review

window.seatonly.nl accessibility score

80

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

Links do not have a discernible 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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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.

Best Practices

window.seatonly.nl 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

window.seatonly.nl SEO score

91

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

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

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

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

window.seatonly.nl

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