Tools & Wizards About Us
klm.lu screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

klm.lu

KLM Royal Dutch Airlines - Book flights online - KLM Luxembourg

Page Load Speed

2.3 sec in total

First Response

275 ms

Resources Loaded

1.6 sec

Page Rendered

425 ms

klm.lu screenshot

About Website

Visit klm.lu now to see the best up-to-date KLM content and also check out these interesting facts you probably never knew about klm.lu

Compare and book all KLM flights, view great last minute offers, choose your favourite seat, check in online, book hotels and all you need for your trip. - KLM Luxembourg

Visit klm.lu

Key Findings

We analyzed Klm.lu page load time and found that the first response time was 275 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

klm.lu performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

52/100

10%

LCP (Largest Contentful Paint)

Value9.3 s

1/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value1,510 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

Network Requests Diagram

klm.lu

275 ms

www.klm.lu

913 ms

1588655105.js

129 ms

135-v1.js

60 ms

tag.js

77 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 19% of them (6 requests) were addressed to the original Klm.lu, 39% (12 requests) were made to Static-kl.com and 29% (9 requests) were made to Img.static-kl.com. The less responsive or slowest element that took the longest time to load (913 ms) belongs to the original domain Klm.lu.

Page Optimization Overview & Recommendations

Page size can be reduced by 416.7 kB (73%)

Content Size

570.3 kB

After Optimization

153.6 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Klm.lu main page is 570.3 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. 35% of websites need less resources to load. HTML takes 323.1 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 280.2 kB

  • Original 323.1 kB
  • After minification 317.8 kB
  • After compression 42.9 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 280.2 kB or 87% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 26.3 kB
  • After minification 26.3 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. KLM images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 136.5 kB

  • Original 221.0 kB
  • After minification 220.3 kB
  • After compression 84.5 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 136.5 kB or 62% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (46%)

Requests Now

26

After Optimization

14

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of KLM. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

klm.lu

klm.lu

275 ms

www.klm.lu

www.klm.lu

913 ms

1588655105.js

1588655105.js

129 ms

135-v1.js

135-v1.js

60 ms

tag.js

tag.js

77 ms

kl.60aada4e2f62525edb26eccba4737f105cb08e34.css

kl.60aada4e2f62525edb26eccba4737f105cb08e34.css

202 ms

cookie-banner.js

cookie-banner.js

316 ms

homepage.60aada4e2f62525edb26eccba4737f105cb08e34.css

homepage.60aada4e2f62525edb26eccba4737f105cb08e34.css

86 ms

next-best-action.60aada4e2f62525edb26eccba4737f105cb08e34.css

next-best-action.60aada4e2f62525edb26eccba4737f105cb08e34.css

77 ms

search.60aada4e2f62525edb26eccba4737f105cb08e34.css

search.60aada4e2f62525edb26eccba4737f105cb08e34.css

105 ms

station-list.60aada4e2f62525edb26eccba4737f105cb08e34.css

station-list.60aada4e2f62525edb26eccba4737f105cb08e34.css

121 ms

304 ms

runtime.b13eb219aba4fd1f.js

runtime.b13eb219aba4fd1f.js

48 ms

polyfills.40b5180b5ae81fe1.js

polyfills.40b5180b5ae81fe1.js

81 ms

main.6433346575e6b5bb.js

main.6433346575e6b5bb.js

82 ms

ubDBSFWE

ubDBSFWE

46 ms

F99CC125-0B76-4F1A-9079804B8693ED6E

F99CC125-0B76-4F1A-9079804B8693ED6E

306 ms

01ECE678-E199-481B-92B7F2DB475A2DC6

01ECE678-E199-481B-92B7F2DB475A2DC6

342 ms

5613C7AF-06BB-48EC-845B931C495BDA70

5613C7AF-06BB-48EC-845B931C495BDA70

338 ms

EA8C7732-4D9D-4EDF-920170DD6C0B60F8

EA8C7732-4D9D-4EDF-920170DD6C0B60F8

345 ms

DE35E6F1-D87F-4987-8FDC330C67582610

DE35E6F1-D87F-4987-8FDC330C67582610

336 ms

41181F1F-5AC2-4074-89F2D99D3A1C88F6

41181F1F-5AC2-4074-89F2D99D3A1C88F6

336 ms

338 ms

345 ms

brand-logo.svg

brand-logo.svg

76 ms

5a9dfaaee1d6a70d_complete.js

5a9dfaaee1d6a70d_complete.js

93 ms

kl-logo-2022.svg

kl-logo-2022.svg

69 ms

Roboto-Regular.woff

Roboto-Regular.woff

72 ms

NoaDemi-light.woff

NoaDemi-light.woff

62 ms

NoaLTW04-light.woff

NoaLTW04-light.woff

63 ms

kl-print.60aada4e2f62525edb26eccba4737f105cb08e34.css

kl-print.60aada4e2f62525edb26eccba4737f105cb08e34.css

57 ms

Accessibility Review

klm.lu accessibility score

94

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

Best Practices

klm.lu best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

klm.lu SEO score

93

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

Links do not have descriptive text

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

klm.lu

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