Tools & Wizards About Us
nvvs.nl screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

nvvs.nl

Informatie over slechthorendheid, tinnitus en hooraandoeningen - Stichting Hoormij

Page Load Speed

5.1 sec in total

First Response

283 ms

Resources Loaded

4.6 sec

Page Rendered

233 ms

nvvs.nl screenshot

About Website

Click here to check amazing Nvvs content for Netherlands. Otherwise, check out these important facts you probably never knew about nvvs.nl

Een site voor iedereen geïnteresseerd in slechthorendheid, oorsuizen (tinnitus), de ziekte van Ménière (draaiduizelingen), een brughoektumor, overgevoelig voor geluiden (hyperacusis) of diverse hoorim...

Visit nvvs.nl

Key Findings

We analyzed Nvvs.nl page load time and found that the first response time was 283 ms and then it took 4.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

nvvs.nl performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value10.9 s

0/100

25%

SI (Speed Index)

Value14.5 s

1/100

10%

TBT (Total Blocking Time)

Value17,230 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.01

100/100

15%

TTI (Time to Interactive)

Value26.8 s

0/100

10%

Network Requests Diagram

nvvs.nl

283 ms

www.stichtinghoormij.nl

3136 ms

css.axd

386 ms

DXR.axd

460 ms

modernizr-2.8.3.min.js

126 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Nvvs.nl, 74% (31 requests) were made to Stichtinghoormij.nl and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (3.1 sec) relates to the external source Stichtinghoormij.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.0 MB (65%)

Content Size

1.5 MB

After Optimization

530.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nvvs.nl main page is 1.5 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. 60% of websites need less resources to load. CSS take 525.1 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 150.0 kB

  • Original 179.4 kB
  • After minification 179.4 kB
  • After compression 29.4 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 150.0 kB or 84% of the original size.

Image Optimization

-7%

Potential reduce by 21.8 kB

  • Original 307.2 kB
  • After minification 285.4 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. Nvvs images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 368.9 kB

  • Original 523.3 kB
  • After minification 501.9 kB
  • After compression 154.4 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 368.9 kB or 70% of the original size.

CSS Optimization

-88%

Potential reduce by 463.6 kB

  • Original 525.1 kB
  • After minification 422.4 kB
  • After compression 61.5 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. Nvvs.nl needs all CSS files to be minified and compressed as it can save up to 463.6 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (46%)

Requests Now

37

After Optimization

20

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nvvs. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

nvvs.nl

nvvs.nl

283 ms

www.stichtinghoormij.nl

www.stichtinghoormij.nl

3136 ms

css.axd

css.axd

386 ms

DXR.axd

DXR.axd

460 ms

modernizr-2.8.3.min.js

modernizr-2.8.3.min.js

126 ms

WebResource.axd

WebResource.axd

176 ms

jquery-1.11.3.min.js

jquery-1.11.3.min.js

8 ms

jslib.axd

jslib.axd

505 ms

DXR.axd

DXR.axd

496 ms

DXR.axd

DXR.axd

227 ms

jquery-ui.min.js

jquery-ui.min.js

9 ms

WebResource.axd

WebResource.axd

266 ms

WebResource.axd

WebResource.axd

490 ms

WebResource.axd

WebResource.axd

491 ms

WebResource.axd

WebResource.axd

492 ms

WebResource.axd

WebResource.axd

493 ms

DXR.axd

DXR.axd

651 ms

gpt.js

gpt.js

174 ms

analytics.js

analytics.js

174 ms

ajax-loader.gif

ajax-loader.gif

137 ms

DXR.axd

DXR.axd

133 ms

sprite.svg

sprite.svg

132 ms

DSC_0080_caroussel.jpg

DSC_0080_caroussel.jpg

426 ms

docuhyperacusis_caroussel.jpg

docuhyperacusis_caroussel.jpg

361 ms

ledenwerving.jpg

ledenwerving.jpg

214 ms

ervaringskennis.jpg

ervaringskennis.jpg

215 ms

LHbordjebewerkt.jpg

LHbordjebewerkt.jpg

360 ms

icon.svg

icon.svg

287 ms

ad_01.jpg

ad_01.jpg

359 ms

ad_03.jpg

ad_03.jpg

360 ms

banner_ervaringrijk.JPG

banner_ervaringrijk.JPG

424 ms

ad_04.jpg

ad_04.jpg

424 ms

devex.woff

devex.woff

292 ms

main.woff

main.woff

291 ms

icons.woff

icons.woff

292 ms

pubads_impl_82.js

pubads_impl_82.js

68 ms

collect

collect

52 ms

ads

ads

371 ms

container.html

container.html

290 ms

css.axd

css.axd

125 ms

28696594506442603

28696594506442603

42 ms

osd.js

osd.js

17 ms

Accessibility Review

nvvs.nl accessibility score

76

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA input fields do not have accessible names

High

ARIA toggle fields do not have accessible names

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

nvvs.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

nvvs.nl SEO score

86

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

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 Nvvs.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 Nvvs.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

nvvs.nl

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