Tools & Wizards About Us
vliegles.nl screenshot

Report Summary

  • 28

    Performance

    Renders faster than
    47% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

vliegles.nl

Vliegles en parachutespringen voor iedereen | Vliegles.nl

Page Load Speed

2.6 sec in total

First Response

275 ms

Resources Loaded

1.9 sec

Page Rendered

402 ms

vliegles.nl screenshot

About Website

Click here to check amazing Vliegles content. Otherwise, check out these important facts you probably never knew about vliegles.nl

Boek een vliegles voor jezelf of als cadeau, ervaring is niet nodig. Vlieglessen, tandemsprongen, vliegsimulatoren en andere vliegbelevenissen.

Visit vliegles.nl

Key Findings

We analyzed Vliegles.nl page load time and found that the first response time was 275 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

vliegles.nl performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

29/100

10%

LCP (Largest Contentful Paint)

Value5.5 s

18/100

25%

SI (Speed Index)

Value6.9 s

33/100

10%

TBT (Total Blocking Time)

Value5,240 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.9 s

21/100

10%

Network Requests Diagram

vliegles.nl

275 ms

www.vliegles.nl

711 ms

bootstrap.css

188 ms

site-20151129.css

288 ms

jquery.js

656 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 64% of them (25 requests) were addressed to the original Vliegles.nl, 8% (3 requests) were made to S.ytimg.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (711 ms) belongs to the original domain Vliegles.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 838.6 kB (62%)

Content Size

1.4 MB

After Optimization

516.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vliegles.nl main page is 1.4 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. 65% of websites need less resources to load. Javascripts take 606.3 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 20.2 kB

  • Original 25.1 kB
  • After minification 16.9 kB
  • After compression 4.9 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. This page needs HTML code to be minified as it can gain 8.1 kB, which is 32% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 20.2 kB or 80% of the original size.

Image Optimization

-2%

Potential reduce by 4.4 kB

  • Original 287.3 kB
  • After minification 282.9 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. Vliegles images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 446.6 kB

  • Original 606.3 kB
  • After minification 461.4 kB
  • After compression 159.8 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 446.6 kB or 74% of the original size.

CSS Optimization

-84%

Potential reduce by 367.4 kB

  • Original 436.1 kB
  • After minification 398.6 kB
  • After compression 68.7 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. Vliegles.nl needs all CSS files to be minified and compressed as it can save up to 367.4 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (28%)

Requests Now

32

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vliegles. 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

vliegles.nl

vliegles.nl

275 ms

www.vliegles.nl

www.vliegles.nl

711 ms

bootstrap.css

bootstrap.css

188 ms

site-20151129.css

site-20151129.css

288 ms

jquery.js

jquery.js

656 ms

yii.js

yii.js

275 ms

lightbox.min.js

lightbox.min.js

277 ms

bootstrap.js

bootstrap.js

386 ms

analytics.js

analytics.js

53 ms

hsX8Xag9STg

hsX8Xag9STg

133 ms

close.png

close.png

106 ms

vliegtuig.gif

vliegtuig.gif

209 ms

prev.png

prev.png

105 ms

next.png

next.png

106 ms

vliegles-white.svg

vliegles-white.svg

176 ms

en.svg

en.svg

209 ms

20.jpg

20.jpg

570 ms

sportvliegen-1-219x175.jpg

sportvliegen-1-219x175.jpg

366 ms

cessna-6-219x175.jpg

cessna-6-219x175.jpg

364 ms

zweefvliegen-1-219x175.jpg

zweefvliegen-1-219x175.jpg

366 ms

simulator-1-219x175.jpg

simulator-1-219x175.jpg

402 ms

blackshape-1-219x175.jpg

blackshape-1-219x175.jpg

385 ms

ultralight-1-219x175.jpg

ultralight-1-219x175.jpg

400 ms

trike-1-219x175.jpg

trike-1-219x175.jpg

401 ms

paragliding-1-219x175.jpg

paragliding-1-219x175.jpg

401 ms

rtl4.png

rtl4.png

446 ms

ideal-visa-mastercard.png

ideal-visa-mastercard.png

571 ms

e8172f83-a27d-4c42-9ae9-1318fd5f537e.js

e8172f83-a27d-4c42-9ae9-1318fd5f537e.js

556 ms

cJZKeOuBrn4kERxqtaUH3T8E0i7KZn-EPnyo3HZu7kw.woff

cJZKeOuBrn4kERxqtaUH3T8E0i7KZn-EPnyo3HZu7kw.woff

50 ms

k3k702ZOKiLJc3WVjuplzHhCUOGz7vYGh680lGh-uXM.woff

k3k702ZOKiLJc3WVjuplzHhCUOGz7vYGh680lGh-uXM.woff

56 ms

collect

collect

27 ms

collect

collect

58 ms

www-embed-player-vflfNyN_r.css

www-embed-player-vflfNyN_r.css

26 ms

www-embed-player.js

www-embed-player.js

53 ms

base.js

base.js

85 ms

fBnyGA8Aionz5086-mElmoOSPUuyQ1M9Un647_EjucU.js

fBnyGA8Aionz5086-mElmoOSPUuyQ1M9Un647_EjucU.js

63 ms

ad_status.js

ad_status.js

98 ms

2UX7WLTfW3W8TclTUvlFyQ.woff

2UX7WLTfW3W8TclTUvlFyQ.woff

79 ms

RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff

RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff

85 ms

Accessibility Review

vliegles.nl accessibility score

94

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.

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

vliegles.nl best practices score

92

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

SEO Factors

vliegles.nl SEO score

100

Search Engine Optimization Advices

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

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vliegles.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 Vliegles.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

vliegles.nl

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