Tools & Wizards About Us
telefoonboek.nl screenshot

Report Summary

  • 61

    Performance

    Renders faster than
    76% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 91% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

telefoonboek.nl

Telefoonboek - telefoongids in Nederland - Telefoonnummer

Page Load Speed

2.6 sec in total

First Response

358 ms

Resources Loaded

1.8 sec

Page Rendered

490 ms

telefoonboek.nl screenshot

About Website

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

Zoek telefoonnummers online in de officiële bedrijven- en personengids van Nederland.

Visit telefoonboek.nl

Key Findings

We analyzed Telefoonboek.nl page load time and found that the first response time was 358 ms and then it took 2.2 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

telefoonboek.nl performance score

61

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value4.5 s

36/100

25%

SI (Speed Index)

Value3.3 s

91/100

10%

TBT (Total Blocking Time)

Value440 ms

64/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.1 s

41/100

10%

Network Requests Diagram

telefoonboek.nl

358 ms

www.telefoonboek.nl

396 ms

home.1711462938.css

120 ms

home.1702382481.css

183 ms

company.desktop-min.1711462938.js

374 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 77% of them (33 requests) were addressed to the original Telefoonboek.nl, 16% (7 requests) were made to Fonts.gstatic.com and 2% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (717 ms) belongs to the original domain Telefoonboek.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 43.0 kB (11%)

Content Size

374.4 kB

After Optimization

331.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Telefoonboek.nl main page is 374.4 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. 40% of websites need less resources to load. Images take 291.4 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 36.7 kB

  • Original 46.9 kB
  • After minification 35.7 kB
  • After compression 10.2 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. This page needs HTML code to be minified as it can gain 11.2 kB, which is 24% 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 36.7 kB or 78% of the original size.

Image Optimization

-2%

Potential reduce by 6.3 kB

  • Original 291.4 kB
  • After minification 285.1 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. Telefoonboek images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 12.5 kB
  • After minification 12.5 kB
  • After compression 12.5 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 37 B

  • Original 23.6 kB
  • After minification 23.6 kB
  • After compression 23.6 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. Telefoonboek.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 12 (35%)

Requests Now

34

After Optimization

22

  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Telefoonboek. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

telefoonboek.nl

telefoonboek.nl

358 ms

www.telefoonboek.nl

www.telefoonboek.nl

396 ms

home.1711462938.css

home.1711462938.css

120 ms

home.1702382481.css

home.1702382481.css

183 ms

company.desktop-min.1711462938.js

company.desktop-min.1711462938.js

374 ms

tt_bedrijf_icon.svg

tt_bedrijf_icon.svg

365 ms

tt_persoon_icon.svg

tt_persoon_icon.svg

369 ms

tt_postcode_icon.svg

tt_postcode_icon.svg

374 ms

tt_adres_icon.svg

tt_adres_icon.svg

367 ms

tt_omgekeerd_icon.svg

tt_omgekeerd_icon.svg

372 ms

gf_add_circle.svg

gf_add_circle.svg

386 ms

js

js

67 ms

places_nl.svg

places_nl.svg

387 ms

google_icon.svg

google_icon.svg

384 ms

google-review.svg

google-review.svg

384 ms

timmerman-aan-het-werk.png

timmerman-aan-het-werk.png

717 ms

tb_bedrijf_icon_hover.svg

tb_bedrijf_icon_hover.svg

380 ms

tb_persoon_icon_hover.svg

tb_persoon_icon_hover.svg

472 ms

tb_postcode_icon_hover.svg

tb_postcode_icon_hover.svg

474 ms

tb_adres_icon_hover.svg

tb_adres_icon_hover.svg

467 ms

tb_omgekeerd_icon_hover.svg

tb_omgekeerd_icon_hover.svg

469 ms

linkedin.svg

linkedin.svg

470 ms

facebook.svg

facebook.svg

555 ms

twitter.svg

twitter.svg

553 ms

places_logo_w.svg

places_logo_w.svg

557 ms

css2

css2

41 ms

telefoonboek-logo.png

telefoonboek-logo.png

296 ms

tb_bedrijf_icon.svg

tb_bedrijf_icon.svg

292 ms

tb_persoon_icon.svg

tb_persoon_icon.svg

366 ms

tb_postcode_icon.svg

tb_postcode_icon.svg

367 ms

tb_adres_icon.svg

tb_adres_icon.svg

369 ms

tb_omgekeerd_icon.svg

tb_omgekeerd_icon.svg

371 ms

tb_bedrijf_bg.svg

tb_bedrijf_bg.svg

372 ms

search_btn_icon.svg

search_btn_icon.svg

450 ms

1822_profile_pointer.png

1822_profile_pointer.png

536 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM70w9.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM70w9.woff

129 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr70w9.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr70w9.woff

138 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC70w9.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC70w9.woff

170 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCu170w9.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCu170w9.woff

187 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtZ6Ew9.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtZ6Ew9.woff

198 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Ew9.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Ew9.woff

198 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCs16Ew9.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCs16Ew9.woff

201 ms

AGSKWxUfJDLpbwEUlbwlCAc6UHIlPh4xtHyTOj2H1CV8V4MWL4Diam-69bRDGRRmKi-483WFACjBXIFlXain3yxvexw=

AGSKWxUfJDLpbwEUlbwlCAc6UHIlPh4xtHyTOj2H1CV8V4MWL4Diam-69bRDGRRmKi-483WFACjBXIFlXain3yxvexw=

108 ms

Accessibility Review

telefoonboek.nl accessibility score

97

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.

Best Practices

telefoonboek.nl best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

telefoonboek.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

    UTF-8

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

telefoonboek.nl

Open Graph data is detected on the main page of Telefoonboek. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: