Tools & Wizards About Us
peterkoorn.nl screenshot

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

peterkoorn.nl

Marketing- en Reclamebureau Amsterdam & Texel - 53 Graden Noord

Page Load Speed

8.8 sec in total

First Response

271 ms

Resources Loaded

7.9 sec

Page Rendered

633 ms

peterkoorn.nl screenshot

About Website

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

53 Graden Noord is een full-service internet- en reclamebureau met een vestiging in Amsterdam en op Texel. Gespecialiseerd in websites, ontwerp en drukwerk.

Visit peterkoorn.nl

Key Findings

We analyzed Peterkoorn.nl page load time and found that the first response time was 271 ms and then it took 8.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

peterkoorn.nl performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

35/100

25%

SI (Speed Index)

Value10.8 s

6/100

10%

TBT (Total Blocking Time)

Value680 ms

44/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value13.3 s

11/100

10%

Network Requests Diagram

peterkoorn.nl

271 ms

peterkoorn.nl

352 ms

www.53gradennoord.nl

287 ms

www.53gradennoord.nl

961 ms

font-awesome.min.css

29 ms

Our browser made a total of 63 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Peterkoorn.nl, 59% (37 requests) were made to 53gradennoord.nl and 8% (5 requests) were made to Scontent-ams4-1.cdninstagram.com. The less responsive or slowest element that took the longest time to load (5.6 sec) relates to the external source Scontent-ams4-1.cdninstagram.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 297.5 kB (3%)

Content Size

10.5 MB

After Optimization

10.2 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Peterkoorn.nl main page is 10.5 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. Images take 10.4 MB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 70.6 kB

  • Original 98.3 kB
  • After minification 88.6 kB
  • After compression 27.7 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 70.6 kB or 72% of the original size.

Image Optimization

-2%

Potential reduce by 224.9 kB

  • Original 10.4 MB
  • After minification 10.2 MB

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. Peterkoorn images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 2.0 kB

  • Original 37.6 kB
  • After minification 37.6 kB
  • After compression 35.6 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.

Requests Breakdown

Number of requests can be reduced by 15 (27%)

Requests Now

55

After Optimization

40

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Peterkoorn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

peterkoorn.nl

peterkoorn.nl

271 ms

peterkoorn.nl

peterkoorn.nl

352 ms

www.53gradennoord.nl

www.53gradennoord.nl

287 ms

www.53gradennoord.nl

www.53gradennoord.nl

961 ms

font-awesome.min.css

font-awesome.min.css

29 ms

main.1583507790.css

main.1583507790.css

300 ms

jquery.js

jquery.js

485 ms

efc.js

efc.js

232 ms

js

js

47 ms

counter.js

counter.js

43 ms

41c59c4b5aedf8f6dbf5954dc6a61403595bc35a.js

41c59c4b5aedf8f6dbf5954dc6a61403595bc35a.js

192 ms

jquery.countdown.js

jquery.countdown.js

287 ms

app.min.276255754.js

app.min.276255754.js

387 ms

callus.js

callus.js

139 ms

tr2.onlinesucces.nl

tr2.onlinesucces.nl

721 ms

goal.min.js

goal.min.js

255 ms

fbevents.js

fbevents.js

115 ms

hotjar-593278.js

hotjar-593278.js

346 ms

441189876_970540785076907_8131313764676731521_n.jpg

441189876_970540785076907_8131313764676731521_n.jpg

2885 ms

441505748_973944624736523_562175148401299842_n.jpg

441505748_973944624736523_562175148401299842_n.jpg

801 ms

441186413_970613795069606_2009719004448232645_n.jpg

441186413_970613795069606_2009719004448232645_n.jpg

3666 ms

441140777_970537735077212_2626205449180483137_n.jpg

441140777_970537735077212_2626205449180483137_n.jpg

5646 ms

444791227_2651207238413688_5227865372423302201_n.webp

444791227_2651207238413688_5227865372423302201_n.webp

4001 ms

441148579_970521211745531_1054569780819456960_n.jpg

441148579_970521211745531_1054569780819456960_n.jpg

3825 ms

logo-53gradennoord.png

logo-53gradennoord.png

247 ms

scroll-down-line.png

scroll-down-line.png

247 ms

baume-et-mercier_wit.png

baume-et-mercier_wit.png

247 ms

nieuw-leven_logo_wit.png

nieuw-leven_logo_wit.png

338 ms

logo-koorn-aar.png

logo-koorn-aar.png

247 ms

logo-flowresulting.png

logo-flowresulting.png

338 ms

nioz_wit.png

nioz_wit.png

338 ms

videolux_logo_wit.png

videolux_logo_wit.png

338 ms

rival_logo_wit.png

rival_logo_wit.png

354 ms

villa-verhuur_logo_wit.png

villa-verhuur_logo_wit.png

511 ms

6b79b3fada274dae2d3006c47c347ee9.jpg

6b79b3fada274dae2d3006c47c347ee9.jpg

1261 ms

3d19149d55bf574e384ac23d9e5a6dbf.jpg

3d19149d55bf574e384ac23d9e5a6dbf.jpg

887 ms

b7f516c2ec339a65f6f296a821aa84f4.jpg

b7f516c2ec339a65f6f296a821aa84f4.jpg

1631 ms

logo_53n.png

logo_53n.png

428 ms

js

js

178 ms

analytics.js

analytics.js

171 ms

307A88_1_0.woff

307A88_1_0.woff

650 ms

307A88_0_0.woff

307A88_0_0.woff

674 ms

fa-large.woff

fa-large.woff

643 ms

53n_website_slide_de-vrijheid.jpg

53n_website_slide_de-vrijheid.jpg

1923 ms

53n_website_slide_hotel-texel.jpg

53n_website_slide_hotel-texel.jpg

2285 ms

53n_website_drukwerk-slide_roestverfshop.jpg

53n_website_drukwerk-slide_roestverfshop.jpg

1995 ms

53n_silde_drukwerk_baumemercier.jpg

53n_silde_drukwerk_baumemercier.jpg

2746 ms

53n_silde_nioz.jpg

53n_silde_nioz.jpg

2030 ms

53n_website_drukwerk-koopplein.jpg

53n_website_drukwerk-koopplein.jpg

2212 ms

53n_website_slide_bruuzer.jpg

53n_website_slide_bruuzer.jpg

2387 ms

sprite.png

sprite.png

2094 ms

footer-texel.jpg

footer-texel.jpg

2116 ms

footer-amsterdam.jpg

footer-amsterdam.jpg

2181 ms

footer-alkmaar.jpg

footer-alkmaar.jpg

2312 ms

futy-widget.js

futy-widget.js

250 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

139 ms

t.php

t.php

291 ms

default-large.jpg

default-large.jpg

2310 ms

bg-reviews-large.jpg

bg-reviews-large.jpg

2328 ms

collect

collect

65 ms

modules.305879d9d5e96288a7f4.js

modules.305879d9d5e96288a7f4.js

23 ms

collect

collect

33 ms

futy-widget-legacy.js

futy-widget-legacy.js

69 ms

Accessibility Review

peterkoorn.nl accessibility score

70

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-*] attributes do not match their roles

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[aria-*] attributes do not have valid values

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

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

[lang] attributes do not have a valid value

Best Practices

peterkoorn.nl best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

peterkoorn.nl SEO score

83

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

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 Peterkoorn.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 Peterkoorn.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

peterkoorn.nl

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