Tools & Wizards About Us
demolis.nl screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

demolis.nl

Demolis - Adviesbureau op gebied van asbest, sloop en bodem

Page Load Speed

1.7 sec in total

First Response

316 ms

Resources Loaded

1.2 sec

Page Rendered

158 ms

demolis.nl screenshot

About Website

Click here to check amazing Demolis content. Otherwise, check out these important facts you probably never knew about demolis.nl

Demolis is een onafhankelijk adviesbureau dat garant staat voor een gedegen oplossing van uw milieuvraagstuk .Advies op gebied van asbest, Sloop en Bodem

Visit demolis.nl

Key Findings

We analyzed Demolis.nl page load time and found that the first response time was 316 ms and then it took 1.4 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

demolis.nl performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.1 s

3/100

10%

LCP (Largest Contentful Paint)

Value6.3 s

10/100

25%

SI (Speed Index)

Value12.3 s

3/100

10%

TBT (Total Blocking Time)

Value4,270 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.022

100/100

15%

TTI (Time to Interactive)

Value11.4 s

19/100

10%

Network Requests Diagram

demolis.nl

316 ms

reset.css

202 ms

style.css

172 ms

zerogrid.css

196 ms

responsive.css

221 ms

Our browser made a total of 23 requests to load all elements on the main page. We found that all of those requests were addressed to Demolis.nl and no external sources were called. The less responsive or slowest element that took the longest time to load (479 ms) belongs to the original domain Demolis.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 162.0 kB (32%)

Content Size

507.4 kB

After Optimization

345.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Demolis.nl main page is 507.4 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. 20% of websites need less resources to load. Images take 279.0 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 7.1 kB

  • Original 9.5 kB
  • After minification 7.5 kB
  • After compression 2.5 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 2.0 kB, which is 21% 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 7.1 kB or 74% of the original size.

Image Optimization

-3%

Potential reduce by 7.7 kB

  • Original 279.0 kB
  • After minification 271.3 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. Demolis images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 135.8 kB

  • Original 204.0 kB
  • After minification 188.4 kB
  • After compression 68.2 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 135.8 kB or 67% of the original size.

CSS Optimization

-77%

Potential reduce by 11.4 kB

  • Original 14.9 kB
  • After minification 12.2 kB
  • After compression 3.5 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. Demolis.nl needs all CSS files to be minified and compressed as it can save up to 11.4 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (68%)

Requests Now

22

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 22 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Demolis. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

demolis.nl

demolis.nl

316 ms

reset.css

reset.css

202 ms

style.css

style.css

172 ms

zerogrid.css

zerogrid.css

196 ms

responsive.css

responsive.css

221 ms

jquery-1.6.3.min.js

jquery-1.6.3.min.js

268 ms

cufon-yui.js

cufon-yui.js

177 ms

cufon-replace.js

cufon-replace.js

254 ms

Kozuka_Gothic_Pro_OpenType_300.font.js

Kozuka_Gothic_Pro_OpenType_300.font.js

292 ms

Kozuka_Gothic_Pro_OpenType_700.font.js

Kozuka_Gothic_Pro_OpenType_700.font.js

293 ms

Kozuka_Gothic_Pro_OpenType_900.font.js

Kozuka_Gothic_Pro_OpenType_900.font.js

307 ms

FF-cash.js

FF-cash.js

316 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

339 ms

tms-0.3.js

tms-0.3.js

354 ms

tms_presets.js

tms_presets.js

361 ms

easyTooltip.js

easyTooltip.js

376 ms

script.js

script.js

394 ms

css3-mediaqueries.js

css3-mediaqueries.js

399 ms

header-tail.gif

header-tail.gif

113 ms

logo2.jpg

logo2.jpg

187 ms

afb1.jpg

afb1.jpg

479 ms

afb7.jpg

afb7.jpg

242 ms

marker-1.gif

marker-1.gif

108 ms

Accessibility Review

demolis.nl accessibility score

80

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

Links do not have a discernible name

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

demolis.nl best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

demolis.nl SEO score

91

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Demolis.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it does not match the claimed English language. Our system also found out that Demolis.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

demolis.nl

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