Tools & Wizards About Us

Report Summary

  • 62

    Performance

    Renders faster than
    76% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 58

    SEO

    Google-friendlier than
    21% of websites

bu-ro.nl

buRO - bureau voor ruimtelijke ordening

Page Load Speed

2 sec in total

First Response

406 ms

Resources Loaded

1.4 sec

Page Rendered

170 ms

About Website

Visit bu-ro.nl now to see the best up-to-date BuRO content and also check out these interesting facts you probably never knew about bu-ro.nl

buRO - bureau voor ruimtelijke ordening en advies

Visit bu-ro.nl

Key Findings

We analyzed Bu-ro.nl page load time and found that the first response time was 406 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

bu-ro.nl performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

33/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

59/100

25%

SI (Speed Index)

Value5.0 s

64/100

10%

TBT (Total Blocking Time)

Value520 ms

56/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value6.7 s

56/100

10%

Network Requests Diagram

bu-ro.nl

406 ms

jscookmenu.js

370 ms

jquery-1.4.2.min.js

571 ms

bkgrnd.png

108 ms

background%20buRO.png

292 ms

Our browser made a total of 8 requests to load all elements on the main page. We found that all of those requests were addressed to Bu-ro.nl and no external sources were called. The less responsive or slowest element that took the longest time to load (571 ms) belongs to the original domain Bu-ro.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 131.6 kB (42%)

Content Size

310.2 kB

After Optimization

178.6 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Bu-ro.nl main page is 310.2 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. Only 10% of websites need less resources to load. Images take 176.0 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 21.0 kB

  • Original 25.4 kB
  • After minification 25.4 kB
  • After compression 4.4 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 21.0 kB or 83% of the original size.

Image Optimization

-19%

Potential reduce by 33.0 kB

  • Original 176.0 kB
  • After minification 143.0 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, BuRO needs image optimization as it can save up to 33.0 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-71%

Potential reduce by 77.6 kB

  • Original 108.7 kB
  • After minification 102.0 kB
  • After compression 31.1 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 77.6 kB or 71% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

7

After Optimization

7

  • Images
  • JavaScript

The browser has sent 7 CSS, Javascripts, AJAX and image requests in order to completely render the main page of BuRO. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

bu-ro.nl accessibility score

72

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.

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

bu-ro.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

SEO Factors

bu-ro.nl SEO score

58

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

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Bu-ro.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 Bu-ro.nl main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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