Report Summary

  • 31

    Performance

    Renders faster than
    52% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    82% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

legermuseum.nl

Nationaal Militair Museum | Beleef militaire avonturen

Page Load Speed

4.6 sec in total

First Response

898 ms

Resources Loaded

3.3 sec

Page Rendered

477 ms

legermuseum.nl screenshot

About Website

Click here to check amazing Leger Museum content. Otherwise, check out these important facts you probably never knew about legermuseum.nl

Klaar voor actie? In het Nationaal Militair Museum beleef je de wereld van de krijgsmacht! Met stoere binnen- en buitenactiviteiten!

Visit legermuseum.nl

Key Findings

We analyzed Legermuseum.nl page load time and found that the first response time was 898 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

legermuseum.nl performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value9.5 s

0/100

25%

SI (Speed Index)

Value4.7 s

68/100

10%

TBT (Total Blocking Time)

Value1,610 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.1 s

26/100

10%

Network Requests Diagram

legermuseum.nl

898 ms

www.nmm.nl

710 ms

dfd07d106070.css

176 ms

bdfed68a1e78.js

288 ms

c0b1d63f9209.js

605 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Legermuseum.nl, 90% (28 requests) were made to Nmm.nl and 3% (1 request) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source Nmm.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 979.6 kB (54%)

Content Size

1.8 MB

After Optimization

829.2 kB

In fact, the total size of Legermuseum.nl main page is 1.8 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. 30% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 12.2 kB

  • Original 17.1 kB
  • After minification 14.7 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 2.4 kB, which is 14% 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 12.2 kB or 72% of the original size.

Image Optimization

-40%

Potential reduce by 437.3 kB

  • Original 1.1 MB
  • After minification 663.3 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. Obviously, Leger Museum needs image optimization as it can save up to 437.3 kB or 40% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-73%

Potential reduce by 368.8 kB

  • Original 503.6 kB
  • After minification 502.4 kB
  • After compression 134.8 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 368.8 kB or 73% of the original size.

CSS Optimization

-86%

Potential reduce by 161.3 kB

  • Original 187.6 kB
  • After minification 169.5 kB
  • After compression 26.3 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. Legermuseum.nl needs all CSS files to be minified and compressed as it can save up to 161.3 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (14%)

Requests Now

22

After Optimization

19

The browser has sent 22 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Leger Museum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

legermuseum.nl accessibility score

83

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.

High

[role]s are not contained by their required parent element

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

legermuseum.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

High

Page has valid source maps

SEO Factors

legermuseum.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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Legermuseum.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Legermuseum.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

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