Tools & Wizards About Us
nirv.nl screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

nirv.nl

NiRV: Nederlands Instituut voor Register Valuators

Page Load Speed

3.1 sec in total

First Response

468 ms

Resources Loaded

2.4 sec

Page Rendered

241 ms

nirv.nl screenshot

About Website

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

Het NiRV is de beroepsvereniging voor Register Valuators in Nederland. Deze specialisten verzorgen een heldere waardebepaling voor al uw vraagstukken.

Visit nirv.nl

Key Findings

We analyzed Nirv.nl page load time and found that the first response time was 468 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

nirv.nl performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value8.9 s

1/100

25%

SI (Speed Index)

Value20.0 s

0/100

10%

TBT (Total Blocking Time)

Value20,000 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value34.3 s

0/100

10%

Network Requests Diagram

nirv.nl

468 ms

home

321 ms

css

24 ms

jquery.min.js

277 ms

jquery.fancybox.js

277 ms

Our browser made a total of 40 requests to load all elements on the main page. We found that 80% of them (32 requests) were addressed to the original Nirv.nl, 13% (5 requests) were made to Fonts.gstatic.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (641 ms) belongs to the original domain Nirv.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 232.0 kB (20%)

Content Size

1.2 MB

After Optimization

919.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nirv.nl main page is 1.2 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. 30% of websites need less resources to load. Images take 913.0 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 25.3 kB

  • Original 29.7 kB
  • After minification 17.9 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. This page needs HTML code to be minified as it can gain 11.8 kB, which is 40% 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 25.3 kB or 85% of the original size.

Image Optimization

-8%

Potential reduce by 76.5 kB

  • Original 913.0 kB
  • After minification 836.5 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. NiRV images are well optimized though.

JavaScript Optimization

-61%

Potential reduce by 115.0 kB

  • Original 188.3 kB
  • After minification 170.7 kB
  • After compression 73.3 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 115.0 kB or 61% of the original size.

CSS Optimization

-75%

Potential reduce by 15.2 kB

  • Original 20.3 kB
  • After minification 16.2 kB
  • After compression 5.1 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. Nirv.nl needs all CSS files to be minified and compressed as it can save up to 15.2 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (70%)

Requests Now

33

After Optimization

10

  • Images
  • JavaScript
  • CSS

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of NiRV. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

nirv.nl

nirv.nl

468 ms

home

home

321 ms

css

css

24 ms

jquery.min.js

jquery.min.js

277 ms

jquery.fancybox.js

jquery.fancybox.js

277 ms

jquery.fancybox.pack.js

jquery.fancybox.pack.js

185 ms

UNI_functions.js

UNI_functions.js

185 ms

UNI_slider.js

UNI_slider.js

182 ms

import.css

import.css

183 ms

jquery.fancybox.css

jquery.fancybox.css

272 ms

homepage.css

homepage.css

274 ms

WEBSITE_navigation.css

WEBSITE_navigation.css

274 ms

WEBSITE_actual.css

WEBSITE_actual.css

274 ms

WEBSITE_events.css

WEBSITE_events.css

361 ms

reset.css

reset.css

91 ms

style.css

style.css

92 ms

nirv-logo.jpg

nirv-logo.jpg

236 ms

icon-nl.jpg

icon-nl.jpg

237 ms

banner_VanWaarde_nr._15_-_dec._2015.jpg

banner_VanWaarde_nr._15_-_dec._2015.jpg

282 ms

Verlichting3.jpg

Verlichting3.jpg

593 ms

Vogelhuisje3.jpg

Vogelhuisje3.jpg

630 ms

Slider1_JongeOndernemers3.jpg

Slider1_JongeOndernemers3.jpg

621 ms

Slider3_WaardeBedrijf.jpg

Slider3_WaardeBedrijf.jpg

641 ms

cover.jpg

cover.jpg

371 ms

analytics.js

analytics.js

137 ms

search-icon.jpg

search-icon.jpg

138 ms

submenu-bg.png

submenu-bg.png

228 ms

shadow.png

shadow.png

234 ms

li-ffffff-bg.jpg

li-ffffff-bg.jpg

317 ms

li-c3af4e-bg.jpg

li-c3af4e-bg.jpg

323 ms

li-5b758e-bg.jpg

li-5b758e-bg.jpg

406 ms

li-c6c7c9-bg.jpg

li-c6c7c9-bg.jpg

421 ms

li-48becc-bg.jpg

li-48becc-bg.jpg

453 ms

li-3b8576-bg.jpg

li-3b8576-bg.jpg

481 ms

2UX7WLTfW3W8TclTUvlFyQ.woff

2UX7WLTfW3W8TclTUvlFyQ.woff

26 ms

RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff

RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff

28 ms

Hgo13k-tfSpn0qi1SFdUfT8E0i7KZn-EPnyo3HZu7kw.woff

Hgo13k-tfSpn0qi1SFdUfT8E0i7KZn-EPnyo3HZu7kw.woff

27 ms

d-6IYplOFocCacKzxwXSOD8E0i7KZn-EPnyo3HZu7kw.woff

d-6IYplOFocCacKzxwXSOD8E0i7KZn-EPnyo3HZu7kw.woff

26 ms

mnpfi9pxYH-Go5UiibESIj8E0i7KZn-EPnyo3HZu7kw.woff

mnpfi9pxYH-Go5UiibESIj8E0i7KZn-EPnyo3HZu7kw.woff

26 ms

collect

collect

14 ms

Accessibility Review

nirv.nl accessibility score

84

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-hidden="true"] elements contain focusable descendents

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

nirv.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

High

Page has valid source maps

SEO Factors

nirv.nl SEO score

98

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

    NL

  • Encoding

    UTF-8

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

nirv.nl

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