Tools & Wizards About Us

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 91% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 96

    SEO

    Google-friendlier than
    90% of websites

hetutrechtsarchief.nl

Het Utrechts Archief - Ontdek de geschiedenis van Utrecht - Het Utrechts Archief

Page Load Speed

2.2 sec in total

First Response

313 ms

Resources Loaded

1.7 sec

Page Rendered

132 ms

About Website

Visit hetutrechtsarchief.nl now to see the best up-to-date Het Utrechts Archief content for Netherlands and also check out these interesting facts you probably never knew about hetutrechtsarchief.nl

Ontdek de geschiedenis van Utrecht bij Het Utrechts Archief in de collectie, activiteiten en tentoonstellingen in het centrum van Utrecht.

Visit hetutrechtsarchief.nl

Key Findings

We analyzed Hetutrechtsarchief.nl page load time and found that the first response time was 313 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

hetutrechtsarchief.nl performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value8.6 s

1/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value2,200 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value22.7 s

1/100

10%

Network Requests Diagram

www.hetutrechtsarchief.nl

313 ms

hua.css

87 ms

hua.js

249 ms

uitklapmenu.aspx

105 ms

huasociaal.js

316 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 87% of them (26 requests) were addressed to the original Hetutrechtsarchief.nl, 7% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Ab-c.nl. The less responsive or slowest element that took the longest time to load (475 ms) belongs to the original domain Hetutrechtsarchief.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 47.4 kB (37%)

Content Size

127.0 kB

After Optimization

79.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Hetutrechtsarchief.nl main page is 127.0 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 15% of websites need less resources to load. Images take 47.6 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 10.7 kB

  • Original 15.0 kB
  • After minification 14.4 kB
  • After compression 4.3 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 10.7 kB or 71% of the original size.

Image Optimization

-11%

Potential reduce by 5.3 kB

  • Original 47.6 kB
  • After minification 42.4 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, Het Utrechts Archief needs image optimization as it can save up to 5.3 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-37%

Potential reduce by 16.6 kB

  • Original 44.7 kB
  • After minification 40.2 kB
  • After compression 28.1 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 16.6 kB or 37% of the original size.

CSS Optimization

-76%

Potential reduce by 14.9 kB

  • Original 19.7 kB
  • After minification 18.1 kB
  • After compression 4.8 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. Hetutrechtsarchief.nl needs all CSS files to be minified and compressed as it can save up to 14.9 kB or 76% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

29

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Het Utrechts Archief. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

hetutrechtsarchief.nl accessibility score

97

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.

Best Practices

hetutrechtsarchief.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

hetutrechtsarchief.nl SEO score

96

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

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 Hetutrechtsarchief.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 Hetutrechtsarchief.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 description is not detected on the main page of Het Utrechts Archief. 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: