Tools & Wizards About Us
strijkeraquarium.nl screenshot

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

strijkeraquarium.nl

Strijker aquarium : de aquariumspeciaalzaak van Rotterdam

Page Load Speed

3.9 sec in total

First Response

31 ms

Resources Loaded

3.4 sec

Page Rendered

501 ms

strijkeraquarium.nl screenshot

About Website

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

De aquariumwinkel met al 40 jaar de ruimste keuze in aquariumvissen en alle toebehoren. Tevens kunt u alle benodigdheden online kopen in de webwinkel.

Visit strijkeraquarium.nl

Key Findings

We analyzed Strijkeraquarium.nl page load time and found that the first response time was 31 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

strijkeraquarium.nl performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value8.0 s

3/100

25%

SI (Speed Index)

Value9.7 s

11/100

10%

TBT (Total Blocking Time)

Value1,620 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.007

100/100

15%

TTI (Time to Interactive)

Value19.1 s

3/100

10%

Network Requests Diagram

strijkeraquarium.nl

31 ms

strijkeraquarium.nl

427 ms

www.strijkeraquarium.nl

818 ms

8ST8QHtl0rl7PvAkQkR5SsWcPkviMED.css

44 ms

modernizr.js

58 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 4% of them (3 requests) were addressed to the original Strijkeraquarium.nl, 54% (45 requests) were made to Cdn.myonlinestore.eu and 27% (23 requests) were made to Static.myonlinestore.eu. The less responsive or slowest element that took the longest time to load (1.7 sec) relates to the external source Cdn.myonlinestore.eu.

Page Optimization Overview & Recommendations

Page size can be reduced by 134.9 kB (5%)

Content Size

2.6 MB

After Optimization

2.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Strijkeraquarium.nl main page is 2.6 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. 70% of websites need less resources to load. Images take 1.9 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 129.5 kB

  • Original 158.7 kB
  • After minification 158.0 kB
  • After compression 29.2 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. 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 129.5 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 21 B

  • Original 1.9 MB
  • After minification 1.9 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. Strijker Aquarium images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 5.2 kB

  • Original 567.3 kB
  • After minification 567.1 kB
  • After compression 562.1 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

-10%

Potential reduce by 146 B

  • Original 1.4 kB
  • After minification 1.4 kB
  • After compression 1.3 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. Strijkeraquarium.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 30 (38%)

Requests Now

78

After Optimization

48

  • Images
  • JavaScript
  • CSS

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Strijker Aquarium. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

strijkeraquarium.nl

strijkeraquarium.nl

31 ms

strijkeraquarium.nl

strijkeraquarium.nl

427 ms

www.strijkeraquarium.nl

www.strijkeraquarium.nl

818 ms

8ST8QHtl0rl7PvAkQkR5SsWcPkviMED.css

8ST8QHtl0rl7PvAkQkR5SsWcPkviMED.css

44 ms

modernizr.js

modernizr.js

58 ms

jquery.min.js

jquery.min.js

61 ms

jquery.cookie.js

jquery.cookie.js

71 ms

shop.js

shop.js

70 ms

category.js

category.js

76 ms

jquery.fancybox.pack.js

jquery.fancybox.pack.js

72 ms

jquery.fancybox-thumbs.js

jquery.fancybox-thumbs.js

70 ms

image.js

image.js

70 ms

2.js

2.js

77 ms

delay.js

delay.js

78 ms

ajax.js

ajax.js

93 ms

foundation.min.js

foundation.min.js

80 ms

foundation.topbar.js

foundation.topbar.js

81 ms

foundation.tooltip.js

foundation.tooltip.js

85 ms

2-defer.js

2-defer.js

85 ms

bootstrapper.a7b9cebf.js

bootstrapper.a7b9cebf.js

88 ms

vendor.ee13d5e3.css

vendor.ee13d5e3.css

89 ms

vendor.38017c7e.js

vendor.38017c7e.js

326 ms

main.53cb2d29.js

main.53cb2d29.js

93 ms

render.f2cbb19b.js

render.f2cbb19b.js

170 ms

js

js

65 ms

css

css

37 ms

css

css

54 ms

router.js

router.js

86 ms

routes.js

routes.js

88 ms

webvitals.f5b8a1c5.js

webvitals.f5b8a1c5.js

208 ms

rollbar.min.js

rollbar.min.js

257 ms

gtm.js

gtm.js

226 ms

gtm.js

gtm.js

238 ms

nl_NL_image_header_4.png

nl_NL_image_header_4.png

595 ms

sdk.js

sdk.js

244 ms

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265 ms

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Vissen%20laten%20bezorgen%20200h.png

302 ms

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305 ms

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304 ms

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304 ms

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303 ms

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338 ms

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338 ms

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337 ms

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338 ms

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339 ms

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341 ms

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340 ms

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508 ms

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537 ms

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572 ms

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535 ms

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601 ms

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708 ms

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717 ms

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726 ms

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751 ms

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857 ms

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856 ms

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1012 ms

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985 ms

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888 ms

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916 ms

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863 ms

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1080 ms

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1107 ms

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1243 ms

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1234 ms

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1351 ms

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1027 ms

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67 ms

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105 ms

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107 ms

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4 ms

80 ms

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1583 ms

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1461 ms

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1193 ms

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1513 ms

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1416 ms

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1740 ms

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1402 ms

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1653 ms

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1610 ms

Accessibility Review

strijkeraquarium.nl accessibility score

72

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

[role]s do not have all required [aria-*] attributes

High

[aria-*] attributes do not have valid values

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

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

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

[id] attributes on active, focusable elements are not unique

Best Practices

strijkeraquarium.nl best practices score

75

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

Missing source maps for large first-party JavaScript

SEO Factors

strijkeraquarium.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 Strijkeraquarium.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 Strijkeraquarium.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

strijkeraquarium.nl

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