Tools & Wizards About Us
openmonumentendag.nl screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

openmonumentendag.nl

Bezoek gratis een monument - Open Monumentendag

Page Load Speed

8.4 sec in total

First Response

30 ms

Resources Loaded

7.3 sec

Page Rendered

1.1 sec

openmonumentendag.nl screenshot

About Website

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

Bezoek gratis een monument tijdens Open Monumentendag. Jaarlijks het tweede weekend van september. In 2024 op 14 en 15 september.

Visit openmonumentendag.nl

Key Findings

We analyzed Openmonumentendag.nl page load time and found that the first response time was 30 ms and then it took 8.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

openmonumentendag.nl performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.6 s

2/100

10%

LCP (Largest Contentful Paint)

Value17.2 s

0/100

25%

SI (Speed Index)

Value18.4 s

0/100

10%

TBT (Total Blocking Time)

Value4,260 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.033

100/100

15%

TTI (Time to Interactive)

Value36.8 s

0/100

10%

Network Requests Diagram

openmonumentendag.nl

30 ms

openmonumentendag.nl

335 ms

www.openmonumentendag.nl

520 ms

f8a7c863eb.js

126 ms

css

69 ms

Our browser made a total of 175 requests to load all elements on the main page. We found that 73% of them (128 requests) were addressed to the original Openmonumentendag.nl, 7% (12 requests) were made to Fonts.gstatic.com and 3% (5 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Openmonumentendag.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 480.7 kB (9%)

Content Size

5.6 MB

After Optimization

5.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Openmonumentendag.nl main page is 5.6 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. Only a small number of websites need less resources to load. Images take 4.3 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 134.8 kB

  • Original 171.2 kB
  • After minification 171.1 kB
  • After compression 36.4 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 134.8 kB or 79% of the original size.

Image Optimization

-0%

Potential reduce by 2.5 kB

  • Original 4.3 MB
  • After minification 4.3 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. Open Monumentendag images are well optimized though.

JavaScript Optimization

-35%

Potential reduce by 328.8 kB

  • Original 949.3 kB
  • After minification 949.3 kB
  • After compression 620.6 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 328.8 kB or 35% of the original size.

CSS Optimization

-7%

Potential reduce by 14.6 kB

  • Original 204.4 kB
  • After minification 202.3 kB
  • After compression 189.8 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. Openmonumentendag.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 110 (70%)

Requests Now

158

After Optimization

48

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 158 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Open Monumentendag. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 67 to 1 for JavaScripts and from 45 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

openmonumentendag.nl

openmonumentendag.nl

30 ms

openmonumentendag.nl

openmonumentendag.nl

335 ms

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www.openmonumentendag.nl

520 ms

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126 ms

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69 ms

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320 ms

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user-registration.css

128 ms

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39 ms

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431 ms

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345 ms

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431 ms

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614 ms

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358 ms

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423 ms

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gtm.js

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96 ms

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523 ms

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1156 ms

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481 ms

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1000 ms

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www-player.css

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base.js

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analytics.js

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fbevents.js

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collect

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Accessibility Review

openmonumentendag.nl accessibility score

91

Accessibility Issues

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

openmonumentendag.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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

openmonumentendag.nl SEO score

85

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    NL

  • Encoding

    UTF-8

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

openmonumentendag.nl

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