Tools & Wizards About Us
hetmuziektheater.nl screenshot

Report Summary

  • 40

    Performance

    Renders faster than
    60% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 89% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

hetmuziektheater.nl

Seizoen 23/24 | Nationale Opera & Ballet

Page Load Speed

2.9 sec in total

First Response

257 ms

Resources Loaded

2 sec

Page Rendered

666 ms

hetmuziektheater.nl screenshot

About Website

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

Met veel plezier presenteren wij u het seizoen 2023/2024! Een bomvol seizoen met maar liefst veertien operaproducties en elf balletproducties.

Visit hetmuziektheater.nl

Key Findings

We analyzed Hetmuziektheater.nl page load time and found that the first response time was 257 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

hetmuziektheater.nl performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

39/100

10%

LCP (Largest Contentful Paint)

Value3.8 s

56/100

25%

SI (Speed Index)

Value8.7 s

16/100

10%

TBT (Total Blocking Time)

Value1,560 ms

13/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value11.8 s

17/100

10%

Network Requests Diagram

hetmuziektheater.nl

257 ms

www.operaballet.nl

525 ms

font-awesome.min.css

39 ms

css_avJdE3f1Yn2JIxw5gH4q_SSbgIUIhJh1Apwr_z6YgI8.css

84 ms

css_Wu8npAzy16WmnnnWKxpexfgsAryolGGaX6yO3GWA5bU.css

164 ms

Our browser made a total of 63 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Hetmuziektheater.nl, 32% (20 requests) were made to Operaballet.nl and 14% (9 requests) were made to D.adroll.com. The less responsive or slowest element that took the longest time to load (662 ms) relates to the external source Operaballet.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 714.4 kB (32%)

Content Size

2.2 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Hetmuziektheater.nl main page is 2.2 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. 45% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 18.3 kB

  • Original 25.0 kB
  • After minification 24.1 kB
  • After compression 6.7 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 18.3 kB or 73% of the original size.

Image Optimization

-6%

Potential reduce by 75.0 kB

  • Original 1.3 MB
  • After minification 1.2 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. Hetmuziektheater images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 401.2 kB

  • Original 606.6 kB
  • After minification 548.9 kB
  • After compression 205.4 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 401.2 kB or 66% of the original size.

CSS Optimization

-85%

Potential reduce by 219.9 kB

  • Original 257.8 kB
  • After minification 254.9 kB
  • After compression 37.9 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. Hetmuziektheater.nl needs all CSS files to be minified and compressed as it can save up to 219.9 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 35 (70%)

Requests Now

50

After Optimization

15

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Hetmuziektheater. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

hetmuziektheater.nl

hetmuziektheater.nl

257 ms

www.operaballet.nl

www.operaballet.nl

525 ms

font-awesome.min.css

font-awesome.min.css

39 ms

css_avJdE3f1Yn2JIxw5gH4q_SSbgIUIhJh1Apwr_z6YgI8.css

css_avJdE3f1Yn2JIxw5gH4q_SSbgIUIhJh1Apwr_z6YgI8.css

84 ms

css_Wu8npAzy16WmnnnWKxpexfgsAryolGGaX6yO3GWA5bU.css

css_Wu8npAzy16WmnnnWKxpexfgsAryolGGaX6yO3GWA5bU.css

164 ms

css__v-OCbNyRVqqmzFK7WvhayTlL3yHqBgG76ceANeAdus.css

css__v-OCbNyRVqqmzFK7WvhayTlL3yHqBgG76ceANeAdus.css

247 ms

js_2sZfxXel7jEEqHb_HlNj1O8PFQ3A08S3IR7kW1gua3A.js

js_2sZfxXel7jEEqHb_HlNj1O8PFQ3A08S3IR7kW1gua3A.js

179 ms

iframe_api

iframe_api

54 ms

js_UWQINlriydSoeSiGQxToOUdv493zEa7dpsXC1OtYlZU.js

js_UWQINlriydSoeSiGQxToOUdv493zEa7dpsXC1OtYlZU.js

295 ms

js_8E-b0xc34l5aBbT7PzC4eAnuPTN8a93RaRuZir4-rnw.js

js_8E-b0xc34l5aBbT7PzC4eAnuPTN8a93RaRuZir4-rnw.js

183 ms

js_Ad402YyQxuzDAZQOObCe3tAXRwxjly7Q0aJOQXx0rOc.js

js_Ad402YyQxuzDAZQOObCe3tAXRwxjly7Q0aJOQXx0rOc.js

445 ms

gtm.js

gtm.js

48 ms

dark-nob.png

dark-nob.png

128 ms

dark-nob-en.png

dark-nob-en.png

279 ms

light-nob.png

light-nob.png

126 ms

light-nob-en.png

light-nob-en.png

126 ms

FaktPro-Normal.woff

FaktPro-Normal.woff

342 ms

EdwardPro-SemiBold.woff

EdwardPro-SemiBold.woff

375 ms

Nob.woff

Nob.woff

257 ms

www-widgetapi.js

www-widgetapi.js

10 ms

analytics.js

analytics.js

24 ms

dc.js

dc.js

70 ms

roundtrip.js

roundtrip.js

22 ms

fbds.js

fbds.js

19 ms

j.php

j.php

21 ms

72 ms

collect

collect

70 ms

v.gif

v.gif

44 ms

va-f9423035fc9f0fdad5f7654cfb9df14b.js

va-f9423035fc9f0fdad5f7654cfb9df14b.js

32 ms

collect

collect

47 ms

__utm.gif

__utm.gif

148 ms

l.gif

l.gif

86 ms

collect

collect

82 ms

close.svg

close.svg

96 ms

1516_13_Chovansjitsjina_1600x900.jpg

1516_13_Chovansjitsjina_1600x900.jpg

662 ms

OFF_1600x900.jpg

OFF_1600x900.jpg

337 ms

Balanchine_1600x900.jpg

Balanchine_1600x900.jpg

490 ms

1516_14_OnlyTheSoundRemains_1600x900.jpg

1516_14_OnlyTheSoundRemains_1600x900.jpg

419 ms

6MFMDWQTXJB5HLLF6VAAPJ.js

6MFMDWQTXJB5HLLF6VAAPJ.js

413 ms

fbevents.hashing.js

fbevents.hashing.js

8 ms

out

out

8 ms

24 ms

out

out

5 ms

out

out

10 ms

out

out

12 ms

out

out

13 ms

out

out

16 ms

out

out

16 ms

out

out

16 ms

u.php

u.php

77 ms

13 ms

adsct

adsct

78 ms

pixel

pixel

47 ms

35 ms

sd

sd

5 ms

377928.gif

377928.gif

7 ms

bounce

bounce

11 ms

Pug

Pug

28 ms

u.php

u.php

74 ms

pixel

pixel

14 ms

in

in

4 ms

collect

collect

4 ms

3 ms

Accessibility Review

hetmuziektheater.nl accessibility score

96

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

Best Practices

hetmuziektheater.nl best practices score

75

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

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

hetmuziektheater.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 Hetmuziektheater.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 Hetmuziektheater.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

hetmuziektheater.nl

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