Tools & Wizards About Us
isosun.nl screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

isosun.nl

IsoSun B.V. - Spouwmuur - Dak - Vloer - Isolatie

Page Load Speed

3.3 sec in total

First Response

361 ms

Resources Loaded

2.5 sec

Page Rendered

445 ms

isosun.nl screenshot

About Website

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

Isoleren is een vak apart, maar onze professionals beheersen dit tot in de puntjes. IsoSun zet 25 jaar ervaring in isolatie graag voor u in!

Visit isosun.nl

Key Findings

We analyzed Isosun.nl page load time and found that the first response time was 361 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

isosun.nl performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

25/100

25%

SI (Speed Index)

Value4.3 s

75/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.739

6/100

15%

TTI (Time to Interactive)

Value3.6 s

91/100

10%

Network Requests Diagram

isosun.nl

361 ms

isosun.nl

703 ms

burger-menu-styles.min.css

187 ms

frontend-general.min.css

282 ms

menu_sideslide.min.css

283 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that all of those requests were addressed to Isosun.nl and no external sources were called. The less responsive or slowest element that took the longest time to load (703 ms) belongs to the original domain Isosun.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 349.1 kB (14%)

Content Size

2.5 MB

After Optimization

2.1 MB

  • HTML
  • Images

In fact, the total size of Isosun.nl main page is 2.5 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. 40% of websites need less resources to load. Images take 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 348.6 kB

  • Original 403.5 kB
  • After minification 394.0 kB
  • After compression 55.0 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 348.6 kB or 86% of the original size.

Image Optimization

-0%

Potential reduce by 489 B

  • Original 2.1 MB
  • After minification 2.1 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. Iso Sun images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 9 (29%)

Requests Now

31

After Optimization

22

  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Iso Sun. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

isosun.nl

isosun.nl

361 ms

isosun.nl

isosun.nl

703 ms

burger-menu-styles.min.css

burger-menu-styles.min.css

187 ms

frontend-general.min.css

frontend-general.min.css

282 ms

menu_sideslide.min.css

menu_sideslide.min.css

283 ms

divi-mobile-stop-stacking.min.css

divi-mobile-stop-stacking.min.css

370 ms

style.min.css

style.min.css

284 ms

style.min.css

style.min.css

199 ms

style.min.css

style.min.css

636 ms

carousel.min.css

carousel.min.css

292 ms

style.css

style.css

383 ms

lazyload.min.js

lazyload.min.js

298 ms

logo_IsoSun.svg

logo_IsoSun.svg

191 ms

smit-isolatiegroep.png

smit-isolatiegroep.png

104 ms

modules.woff

modules.woff

293 ms

fa-solid-900.woff

fa-solid-900.woff

283 ms

fa-brands-400.woff

fa-brands-400.woff

195 ms

fa-regular-400.woff

fa-regular-400.woff

108 ms

isosun-bv.jpg

isosun-bv.jpg

479 ms

leb-logo.png

leb-logo.png

188 ms

shutterstock_1562267464.jpg

shutterstock_1562267464.jpg

378 ms

Icoon_nr1_van_links.svg

Icoon_nr1_van_links.svg

284 ms

Icoon_nr2_van_links.svg

Icoon_nr2_van_links.svg

285 ms

Icoon_nr3_van_links.svg

Icoon_nr3_van_links.svg

359 ms

Icoon_nr4_van_links.svg

Icoon_nr4_van_links.svg

361 ms

Logo.jpeg

Logo.jpeg

368 ms

greany.png

greany.png

379 ms

bestisol.png

bestisol.png

548 ms

rouwenhorst.png

rouwenhorst.png

461 ms

Logo-12MNDN.png

Logo-12MNDN.png

465 ms

22_113_Logo_BOJH.jpg

22_113_Logo_BOJH.jpg

569 ms

Streamer_Partnerwebsites_25jaar.png

Streamer_Partnerwebsites_25jaar.png

480 ms

insula.jpg

insula.jpg

561 ms

vca.png

vca.png

562 ms

VENIN.jpg

VENIN.jpg

571 ms

natuur-vriendelijk-isoleren.png

natuur-vriendelijk-isoleren.png

577 ms

87cfe41b8eca.google-fonts.min.css

87cfe41b8eca.google-fonts.min.css

100 ms

Accessibility Review

isosun.nl accessibility score

87

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.

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

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

isosun.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

SEO Factors

isosun.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 Isosun.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 Isosun.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

isosun.nl

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