Tools & Wizards About Us
demercuur.nl screenshot

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

demercuur.nl

De Mercuur b.v. - Actuele en betrouwbare bouwberichten

Page Load Speed

2.8 sec in total

First Response

355 ms

Resources Loaded

2.3 sec

Page Rendered

226 ms

demercuur.nl screenshot

About Website

Welcome to demercuur.nl homepage info - get ready to check De Mercuur best content right away, or after learning these important things about demercuur.nl

De Mercuur is een familiebedrijf en al meer dan 100 jaar kwaliteitsleverancier van bouw­be­richten.

Visit demercuur.nl

Key Findings

We analyzed Demercuur.nl page load time and found that the first response time was 355 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

demercuur.nl performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

36/100

10%

LCP (Largest Contentful Paint)

Value7.5 s

4/100

25%

SI (Speed Index)

Value24.6 s

0/100

10%

TBT (Total Blocking Time)

Value200 ms

89/100

30%

CLS (Cumulative Layout Shift)

Value0.068

96/100

15%

TTI (Time to Interactive)

Value6.7 s

56/100

10%

Network Requests Diagram

demercuur.nl

355 ms

www.demercuur.nl

584 ms

mercuur.css

93 ms

bootstrap.min.css

279 ms

style.css

254 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 59% of them (22 requests) were addressed to the original Demercuur.nl, 5% (2 requests) were made to Maxcdn.bootstrapcdn.com and 5% (2 requests) were made to Code.jquery.com. The less responsive or slowest element that took the longest time to load (584 ms) belongs to the original domain Demercuur.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 444.2 kB (48%)

Content Size

915.8 kB

After Optimization

471.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Demercuur.nl main page is 915.8 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. 35% of websites need less resources to load. Javascripts take 422.2 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 12.1 kB

  • Original 16.3 kB
  • After minification 14.7 kB
  • After compression 4.2 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 12.1 kB or 74% of the original size.

Image Optimization

-4%

Potential reduce by 12.0 kB

  • Original 307.2 kB
  • After minification 295.2 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. De Mercuur images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 279.4 kB

  • Original 422.2 kB
  • After minification 422.2 kB
  • After compression 142.9 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 279.4 kB or 66% of the original size.

CSS Optimization

-83%

Potential reduce by 140.7 kB

  • Original 170.1 kB
  • After minification 165.7 kB
  • After compression 29.4 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. Demercuur.nl needs all CSS files to be minified and compressed as it can save up to 140.7 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (36%)

Requests Now

33

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of De Mercuur. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

demercuur.nl

demercuur.nl

355 ms

www.demercuur.nl

www.demercuur.nl

584 ms

mercuur.css

mercuur.css

93 ms

bootstrap.min.css

bootstrap.min.css

279 ms

style.css

style.css

254 ms

font-awesome.min.css

font-awesome.min.css

43 ms

jquery-1.11.0.min.js

jquery-1.11.0.min.js

48 ms

jquery-ui.min.js

jquery-ui.min.js

64 ms

jquery.cycle2.min.js

jquery.cycle2.min.js

256 ms

bootstrap.min.js

bootstrap.min.js

268 ms

2ce949

2ce949

42 ms

gtm.js

gtm.js

72 ms

languages.png

languages.png

96 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

17 ms

2CE949_1_0.woff

2CE949_1_0.woff

268 ms

2CE949_0_0.woff

2CE949_0_0.woff

254 ms

de-mercuur-bv

de-mercuur-bv

95 ms

01.jpg

01.jpg

452 ms

de-mercuur-bv.jpg

de-mercuur-bv.jpg

342 ms

proef-aanvragen.jpg

proef-aanvragen.jpg

268 ms

referenties.jpg

referenties.jpg

456 ms

bouwnieuws.jpg

bouwnieuws.jpg

420 ms

zublin.jpg

zublin.jpg

338 ms

secumon.jpg

secumon.jpg

353 ms

plegt.jpg

plegt.jpg

438 ms

hevo.jpg

hevo.jpg

433 ms

zumtobel.jpg

zumtobel.jpg

443 ms

grohe.jpg

grohe.jpg

509 ms

WidgetScript

WidgetScript

369 ms

analytics.js

analytics.js

20 ms

collect

collect

4 ms

collect

collect

52 ms

ga-audiences

ga-audiences

47 ms

_WidgetJPCB0

_WidgetJPCB0

382 ms

_WidgetJPCB1.js

_WidgetJPCB1.js

71 ms

jquery.min.js

jquery.min.js

21 ms

147285691458255940421.js

147285691458255940421.js

10 ms

Accessibility Review

demercuur.nl accessibility score

94

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

Links do not have a discernible name

Best Practices

demercuur.nl best practices score

83

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

Page has valid source maps

SEO Factors

demercuur.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

    NL

  • Encoding

    ISO-8859-1

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

demercuur.nl

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