Tools & Wizards About Us
marianum.nl screenshot

Report Summary

  • 65

    Performance

    Renders faster than
    79% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 89

    SEO

    Google-friendlier than
    67% of websites

marianum.nl

Marianum – Scholengemeenschap

Page Load Speed

3.2 sec in total

First Response

283 ms

Resources Loaded

2.7 sec

Page Rendered

206 ms

marianum.nl screenshot

About Website

Welcome to marianum.nl homepage info - get ready to check Marianum best content for Netherlands right away, or after learning these important things about marianum.nl

Scholengemeenschap

Visit marianum.nl

Key Findings

We analyzed Marianum.nl page load time and found that the first response time was 283 ms and then it took 2.9 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

marianum.nl performance score

65

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

90/100

10%

LCP (Largest Contentful Paint)

Value7.7 s

3/100

25%

SI (Speed Index)

Value6.3 s

42/100

10%

TBT (Total Blocking Time)

Value110 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.012

100/100

15%

TTI (Time to Interactive)

Value6.0 s

65/100

10%

Network Requests Diagram

marianum.nl

283 ms

www.marianum.nl

376 ms

style.css

256 ms

size1.css

172 ms

fonts.css

172 ms

Our browser made a total of 65 requests to load all elements on the main page. We found that 74% of them (48 requests) were addressed to the original Marianum.nl, 14% (9 requests) were made to Static.xx.fbcdn.net and 5% (3 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Marianum.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 212.8 kB (21%)

Content Size

1.0 MB

After Optimization

804.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Marianum.nl main page is 1.0 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. 40% of websites need less resources to load. Images take 734.9 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 28.9 kB

  • Original 35.4 kB
  • After minification 24.8 kB
  • After compression 6.5 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 10.6 kB, which is 30% 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 28.9 kB or 82% of the original size.

Image Optimization

-2%

Potential reduce by 18.3 kB

  • Original 734.9 kB
  • After minification 716.6 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. Marianum images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 133.0 kB

  • Original 208.3 kB
  • After minification 161.9 kB
  • After compression 75.3 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 133.0 kB or 64% of the original size.

CSS Optimization

-85%

Potential reduce by 32.6 kB

  • Original 38.5 kB
  • After minification 25.0 kB
  • After compression 5.9 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. Marianum.nl needs all CSS files to be minified and compressed as it can save up to 32.6 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (51%)

Requests Now

63

After Optimization

31

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Marianum. 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 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

marianum.nl

marianum.nl

283 ms

www.marianum.nl

www.marianum.nl

376 ms

style.css

style.css

256 ms

size1.css

size1.css

172 ms

fonts.css

fonts.css

172 ms

validationEngine.jquery.css

validationEngine.jquery.css

173 ms

jflow.style.css

jflow.style.css

174 ms

jquery.min.js

jquery.min.js

31 ms

jquery.fancybox.js

jquery.fancybox.js

335 ms

jquery.fancybox.css

jquery.fancybox.css

341 ms

jquery.validationEngine-nl.js

jquery.validationEngine-nl.js

342 ms

jquery.validationEngine.js

jquery.validationEngine.js

509 ms

jflow.plus.min.js

jflow.plus.min.js

342 ms

jquery.dotdotdot.min.js

jquery.dotdotdot.min.js

347 ms

analytics.js

analytics.js

29 ms

bg-body.png

bg-body.png

142 ms

trans-white.png

trans-white.png

181 ms

logo-marianum.png

logo-marianum.png

268 ms

bg-form.png

bg-form.png

183 ms

btn-search.png

btn-search.png

182 ms

font-size-1.png

font-size-1.png

183 ms

font-size-2.png

font-size-2.png

267 ms

font-size-3.png

font-size-3.png

433 ms

but_fotovideo.png

but_fotovideo.png

433 ms

btn-inlog.png

btn-inlog.png

433 ms

bg-submenu.png

bg-submenu.png

433 ms

6.jpg

6.jpg

688 ms

5.jpg

5.jpg

603 ms

8.jpg

8.jpg

688 ms

1.jpg

1.jpg

690 ms

9.jpg

9.jpg

777 ms

2.jpg

2.jpg

784 ms

10.jpg

10.jpg

979 ms

7.jpg

7.jpg

1110 ms

banner_underconstruction.png

banner_underconstruction.png

942 ms

noor.jpg

noor.jpg

1114 ms

bg-slidecontent.png

bg-slidecontent.png

942 ms

bullet.png

bullet.png

948 ms

arrows.png

arrows.png

1105 ms

maxprolight.svg

maxprolight.svg

1195 ms

collect

collect

91 ms

bg-actueel.png

bg-actueel.png

1081 ms

arrows-green-white.png

arrows-green-white.png

1104 ms

bg-sliderbot.png

bg-sliderbot.png

1234 ms

arrows-blue-green.png

arrows-blue-green.png

1237 ms

bg-agenda-top.png

bg-agenda-top.png

1239 ms

arrows-blue-small.png

arrows-blue-small.png

1250 ms

bg-agenda-middle.png

bg-agenda-middle.png

1274 ms

agenda_beide.png

agenda_beide.png

1330 ms

bg-agenda-bottom.png

bg-agenda-bottom.png

1403 ms

widgets.js

widgets.js

90 ms

like.php

like.php

182 ms

maxprosemibold.svg

maxprosemibold.svg

1403 ms

button.0308b81ff1714e446f674b5b9793f2cd.js

button.0308b81ff1714e446f674b5b9793f2cd.js

2 ms

tweet_button.b9740740e0bcf9b0657c5b11bd4388da.nl.html

tweet_button.b9740740e0bcf9b0657c5b11bd4388da.nl.html

18 ms

TD3k6ckEuVD.css

TD3k6ckEuVD.css

43 ms

Ad-mJyRG8CK.css

Ad-mJyRG8CK.css

53 ms

AdP_CKHZFBh.css

AdP_CKHZFBh.css

49 ms

q68gy-v_YMF.js

q68gy-v_YMF.js

46 ms

DFmZn3_ZO2h.js

DFmZn3_ZO2h.js

45 ms

mfqI3d6rUg1.js

mfqI3d6rUg1.js

79 ms

_Qp3v7kqEMi.js

_Qp3v7kqEMi.js

79 ms

jot

jot

149 ms

Bw8qRoQ9D-v.js

Bw8qRoQ9D-v.js

11 ms

4ylGxU24Rah.js

4ylGxU24Rah.js

15 ms

Accessibility Review

marianum.nl accessibility score

89

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.

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

ARIA IDs are not unique

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

marianum.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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

marianum.nl SEO score

89

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

    N/A

  • Encoding

    UTF-8

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

marianum.nl

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