Tools & Wizards About Us
onderwaterhuis.nl screenshot

Report Summary

  • 10

    Performance

    Renders faster than
    23% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

onderwaterhuis.nl

Onderwaterhuis.NL - Onderwatercamera's, onderwaterbehuizingen, verhuur, service - Europa's Nr. 1 voor onderwaterfotografie en -video

Page Load Speed

6.7 sec in total

First Response

287 ms

Resources Loaded

5.9 sec

Page Rendered

538 ms

onderwaterhuis.nl screenshot

About Website

Welcome to onderwaterhuis.nl homepage info - get ready to check Onderwaterhuis best content for Netherlands right away, or after learning these important things about onderwaterhuis.nl

Enorm assortiment onderwatercamera's, onderwaterhuizen, flitsers en alle accessoires voor onderwaterfotografie. Van compacte toestellen tot professionele sets. Ook voor het huren van een set voor een ...

Visit onderwaterhuis.nl

Key Findings

We analyzed Onderwaterhuis.nl page load time and found that the first response time was 287 ms and then it took 6.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

onderwaterhuis.nl performance score

10

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value19.5 s

0/100

25%

SI (Speed Index)

Value18.5 s

0/100

10%

TBT (Total Blocking Time)

Value3,690 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.197

63/100

15%

TTI (Time to Interactive)

Value23.4 s

1/100

10%

Network Requests Diagram

onderwaterhuis.nl

287 ms

www.onderwaterhuis.nl

2743 ms

72a8b27d338e49afdf78de6bc747add3.min.css

360 ms

ec.min.css

269 ms

styles-l.min.css

393 ms

Our browser made a total of 95 requests to load all elements on the main page. We found that 85% of them (81 requests) were addressed to the original Onderwaterhuis.nl, 8% (8 requests) were made to Static.klaviyo.com and 2% (2 requests) were made to Static-tracking.klaviyo.com. The less responsive or slowest element that took the longest time to load (2.7 sec) belongs to the original domain Onderwaterhuis.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.1 MB (42%)

Content Size

4.9 MB

After Optimization

2.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Onderwaterhuis.nl main page is 4.9 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. 65% of websites need less resources to load. Images take 2.7 MB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 445.0 kB

  • Original 490.0 kB
  • After minification 484.7 kB
  • After compression 45.0 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 445.0 kB or 91% of the original size.

Image Optimization

-42%

Potential reduce by 1.1 MB

  • Original 2.7 MB
  • After minification 1.6 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. Obviously, Onderwaterhuis needs image optimization as it can save up to 1.1 MB or 42% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-19%

Potential reduce by 276.2 kB

  • Original 1.5 MB
  • After minification 1.5 MB
  • After compression 1.2 MB

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 276.2 kB or 19% of the original size.

CSS Optimization

-91%

Potential reduce by 192.1 kB

  • Original 212.0 kB
  • After minification 25.6 kB
  • After compression 19.9 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. Onderwaterhuis.nl needs all CSS files to be minified and compressed as it can save up to 192.1 kB or 91% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (18%)

Requests Now

87

After Optimization

71

  • Images
  • JavaScript
  • CSS

The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Onderwaterhuis. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

onderwaterhuis.nl

onderwaterhuis.nl

287 ms

www.onderwaterhuis.nl

www.onderwaterhuis.nl

2743 ms

72a8b27d338e49afdf78de6bc747add3.min.css

72a8b27d338e49afdf78de6bc747add3.min.css

360 ms

ec.min.css

ec.min.css

269 ms

styles-l.min.css

styles-l.min.css

393 ms

dee747ccbd96cd81ead85dbbfb9ec009.min.js

dee747ccbd96cd81ead85dbbfb9ec009.min.js

908 ms

klaviyo.js

klaviyo.js

188 ms

pa-5a2174ea41f2c200070000a7.js

pa-5a2174ea41f2c200070000a7.js

372 ms

d52945e1cdfd6ae35f6f43aa7c9c92adf44c6c09373334dced2fcad9bb4794fd.js

d52945e1cdfd6ae35f6f43aa7c9c92adf44c6c09373334dced2fcad9bb4794fd.js

315 ms

gtm.js

gtm.js

150 ms

nl.svg

nl.svg

148 ms

default.svg

default.svg

147 ms

logo-email_nl.png

logo-email_nl.png

149 ms

pand_banner-2.jpg

pand_banner-2.jpg

306 ms

banner-workshops_1.jpg

banner-workshops_1.jpg

200 ms

Diver-451_1.jpg

Diver-451_1.jpg

232 ms

cat1_1.jpg

cat1_1.jpg

398 ms

cat-2-200_1.jpg

cat-2-200_1.jpg

233 ms

cat3_1.jpg

cat3_1.jpg

369 ms

cat4-200-bw_1.jpg

cat4-200-bw_1.jpg

403 ms

strobes-lights_1__1.jpg

strobes-lights_1__1.jpg

314 ms

cat5_1.jpg

cat5_1.jpg

312 ms

stoltg7rstrtpck.jpg

stoltg7rstrtpck.jpg

394 ms

summer-deal-250_1.jpg

summer-deal-250_1.jpg

402 ms

ins220-1.jpg

ins220-1.jpg

404 ms

na17433nw-1.png

na17433nw-1.png

545 ms

wf089-1.png

wf089-1.png

571 ms

dvdaddb-1.jpg

dvdaddb-1.jpg

486 ms

ik40232eu-1.jpg

ik40232eu-1.jpg

491 ms

bbvtl4200p-1.jpg

bbvtl4200p-1.jpg

491 ms

wfwed7pro-1.jpg

wfwed7pro-1.jpg

492 ms

web_01_strobe_1_1024x1024_2x_1.jpg

web_01_strobe_1_1024x1024_2x_1.jpg

575 ms

1OPRUIMING.png

1OPRUIMING.png

580 ms

stsorx100mk5favacu_1.jpg

stsorx100mk5favacu_1.jpg

582 ms

vakantiekit-OM-system-TG7_1.jpg

vakantiekit-OM-system-TG7_1.jpg

672 ms

onderwaterfotografie-met-je-smartphone.jpg

onderwaterfotografie-met-je-smartphone.jpg

811 ms

Backscatter_Hybrid_Flash_strobe_HF-12.jpg

Backscatter_Hybrid_Flash_strobe_HF-12.jpg

747 ms

laatste-nieuws-60.jpg

laatste-nieuws-60.jpg

663 ms

sealife-sportdiver-ultra-sl405-front.jpg

sealife-sportdiver-ultra-sl405-front.jpg

669 ms

bahybrflas-1.jpg

bahybrflas-1.jpg

672 ms

olom1markiibody-1.jpg

olom1markiibody-1.jpg

753 ms

dvdadgw-1.jpg

dvdadgw-1.jpg

759 ms

dvdaddbblue-1.jpg

dvdaddbblue-1.jpg

760 ms

na85207-1.jpg

na85207-1.jpg

761 ms

aouhgpx-1.jpg

aouhgpx-1.jpg

836 ms

wfhtg6pro-1.png

wfhtg6pro-1.png

827 ms

fender_analytics.113876fdc67592e7cbfd.js

fender_analytics.113876fdc67592e7cbfd.js

88 ms

static.047f24ade89e4aff54a9.js

static.047f24ade89e4aff54a9.js

115 ms

runtime.7dea67c1e75d4ade908e.js

runtime.7dea67c1e75d4ade908e.js

9 ms

sharedUtils.9a6c7cead1cefc328bca.js

sharedUtils.9a6c7cead1cefc328bca.js

78 ms

vendors~signup_forms~post_identification_sync~web_personalization~reviews~atlas.b0930143925bb765e2d3.js

vendors~signup_forms~post_identification_sync~web_personalization~reviews~atlas.b0930143925bb765e2d3.js

80 ms

vendors~signup_forms~post_identification_sync~onsite-triggering.98adbd4f3c00592d4b9b.js

vendors~signup_forms~post_identification_sync~onsite-triggering.98adbd4f3c00592d4b9b.js

79 ms

vendors~signup_forms.87a8144324ad4ca548d7.js

vendors~signup_forms.87a8144324ad4ca548d7.js

79 ms

default~signup_forms~onsite-triggering.39d05cf4fd44271c1730.js

default~signup_forms~onsite-triggering.39d05cf4fd44271c1730.js

79 ms

signup_forms.14aea6243661fa58c6fa.js

signup_forms.14aea6243661fa58c6fa.js

80 ms

opensans-400.woff

opensans-400.woff

708 ms

opensans-300.woff

opensans-300.woff

720 ms

opensans-600.woff

opensans-600.woff

720 ms

PAJJhLM6sSoWKfWCAAwDAjgbRAAB42mNgYGBkAIIbCZo5IPrmUn0hGA0AO8EFTQAA

PAJJhLM6sSoWKfWCAAwDAjgbRAAB42mNgYGBkAIIbCZo5IPrmUn0hGA0AO8EFTQAA

2 ms

opensans-700.woff

opensans-700.woff

707 ms

Luma-Icons.woff

Luma-Icons.woff

699 ms

wfs07-1.png

wfs07-1.png

711 ms

babsmf2-1.jpg

babsmf2-1.jpg

646 ms

wfwed5-1.jpg

wfwed5-1.jpg

638 ms

aoucl900pro-2.jpg

aoucl900pro-2.jpg

636 ms

na17338-1.jpg

na17338-1.jpg

627 ms

aouhom1-1.png

aouhom1-1.png

627 ms

opruiming.png

opruiming.png

805 ms

workshops.png

workshops.png

630 ms

smartphone.png

smartphone.png

631 ms

creatief.png

creatief.png

721 ms

Ikelite-logo.jpg

Ikelite-logo.jpg

597 ms

Keldan-logo-125.jpg

Keldan-logo-125.jpg

617 ms

DIVEVOLK-logo-300.jpg

DIVEVOLK-logo-300.jpg

631 ms

AOI-logo-300.jpg

AOI-logo-300.jpg

631 ms

weefine-logo-300.jpg

weefine-logo-300.jpg

628 ms

INON-logo-300.jpg

INON-logo-300.jpg

628 ms

Nauticam-logo-300.jpg

Nauticam-logo-300.jpg

636 ms

TeamWebsite.png

TeamWebsite.png

721 ms

ShowroomWebsite_2.png

ShowroomWebsite_2.png

812 ms

footer-top.png

footer-top.png

597 ms

ideal.svg

ideal.svg

617 ms

paypal.svg

paypal.svg

618 ms

visa.svg

visa.svg

630 ms

mastercard.svg

mastercard.svg

603 ms

sofort.svg

sofort.svg

623 ms

bancontact.svg

bancontact.svg

620 ms

iban.svg

iban.svg

629 ms

postnl.svg

postnl.svg

629 ms

dhl.svg

dhl.svg

629 ms

ups.svg

ups.svg

629 ms

webshop-keurmerk.svg

webshop-keurmerk.svg

631 ms

OM-system-TG7-onderwatercamera-banner738x428.jpg

OM-system-TG7-onderwatercamera-banner738x428.jpg

617 ms

Divevolk-smartphone-housing.jpg

Divevolk-smartphone-housing.jpg

616 ms

print.min.css

print.min.css

90 ms

Accessibility Review

onderwaterhuis.nl accessibility score

87

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

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

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>).

High

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

Best Practices

onderwaterhuis.nl best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

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

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

onderwaterhuis.nl SEO score

90

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

    NL

  • Encoding

    UTF-8

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

onderwaterhuis.nl

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