Tools & Wizards About Us
volzicht.nl screenshot

Report Summary

  • 69

    Performance

    Renders faster than
    80% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

volzicht.nl

Goed zien zonder bril, lenzen of laseren - VolZicht

Page Load Speed

5.4 sec in total

First Response

270 ms

Resources Loaded

3.9 sec

Page Rendered

1.3 sec

volzicht.nl screenshot

About Website

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

Zie je wazig, zie je slecht. Heb je last van je ogen, droge ogen, vermoeide ogen, pijn in jouw ogen, staar, ben je bijziend, verziend etc. Volzicht helpt op weg je naar veel beter zien.

Visit volzicht.nl

Key Findings

We analyzed Volzicht.nl page load time and found that the first response time was 270 ms and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

volzicht.nl performance score

69

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

53/100

10%

LCP (Largest Contentful Paint)

Value2.9 s

81/100

25%

SI (Speed Index)

Value6.8 s

35/100

10%

TBT (Total Blocking Time)

Value340 ms

75/100

30%

CLS (Cumulative Layout Shift)

Value0.016

100/100

15%

TTI (Time to Interactive)

Value10.2 s

25/100

10%

Network Requests Diagram

volzicht.nl

270 ms

volzicht.nl

456 ms

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23 ms

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23 ms

jquery.min.js

85 ms

Our browser made a total of 89 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Volzicht.nl, 30% (27 requests) were made to Media-01.imu.nl and 19% (17 requests) were made to App.phoenixsite.nl. The less responsive or slowest element that took the longest time to load (3.2 sec) relates to the external source Media-01.imu.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 129.4 kB (1%)

Content Size

17.4 MB

After Optimization

17.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Volzicht.nl main page is 17.4 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. Only a small number of websites need less resources to load. Images take 17.0 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 125.6 kB

  • Original 151.4 kB
  • After minification 151.2 kB
  • After compression 25.8 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 125.6 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 802 B

  • Original 17.0 MB
  • After minification 17.0 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. Vol Zicht images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 2.9 kB

  • Original 208.3 kB
  • After minification 208.3 kB
  • After compression 205.3 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 0 B

  • Original 59.2 kB
  • After minification 59.2 kB
  • After compression 59.2 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. Volzicht.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 32 (39%)

Requests Now

83

After Optimization

51

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 83 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vol Zicht. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

volzicht.nl

volzicht.nl

270 ms

volzicht.nl

volzicht.nl

456 ms

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23 ms

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javascript;base64,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

23 ms

jquery.min.js

jquery.min.js

85 ms

parameter-vars.js

parameter-vars.js

119 ms

img-popup-box.js

img-popup-box.js

174 ms

video-popup-box.js

video-popup-box.js

117 ms

portfolio-popup-box.js

portfolio-popup-box.js

117 ms

menu-scroll.js

menu-scroll.js

117 ms

anchor-scroll-script.js

anchor-scroll-script.js

116 ms

box-slider-script.js

box-slider-script.js

178 ms

common-scripts-ps.js

common-scripts-ps.js

178 ms

two-step-optin-trigger.js

two-step-optin-trigger.js

177 ms

phx-admin-menu.js

phx-admin-menu.js

176 ms

fake-scroll.js

fake-scroll.js

177 ms

player.js

player.js

113 ms

video-bg-popup-script.js

video-bg-popup-script.js

176 ms

animation-script.js

animation-script.js

231 ms

youtube-playlist.js

youtube-playlist.js

278 ms

news-unit-new.js

news-unit-new.js

198 ms

optin-forms.js

optin-forms.js

255 ms

phx-analytics.js

phx-analytics.js

112 ms

beter-zien-zonder-bril.png

beter-zien-zonder-bril.png

114 ms

froogaloop2.min.js

froogaloop2.min.js

101 ms

sddefault.jpg

sddefault.jpg

284 ms

lazyload.min.js

lazyload.min.js

188 ms

css

css

158 ms

css

css

164 ms

css

css

187 ms

css

css

245 ms

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1003 ms

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599 ms

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396 ms

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600 ms

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709 ms

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849 ms

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834 ms

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836 ms

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835 ms

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1308 ms

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1292 ms

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1184 ms

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1289 ms

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1290 ms

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1511 ms

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2513 ms

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2275 ms

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2333 ms

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2225 ms

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2246 ms

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2454 ms

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3150 ms

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3097 ms

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3115 ms

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2718 ms

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2726 ms

sddefault.jpg

sddefault.jpg

704 ms

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758 ms

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300 ms

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757 ms

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758 ms

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761 ms

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762 ms

sddefault.jpg

sddefault.jpg

831 ms

analytics.js

analytics.js

94 ms

sdk.js

sdk.js

93 ms

sdk.js

sdk.js

60 ms

collect

collect

27 ms

122 ms

js

js

133 ms

929955135

929955135

514 ms

jxzIOn2ex-0

jxzIOn2ex-0

151 ms

qE3vKZyYuoY

qE3vKZyYuoY

508 ms

font

font

38 ms

font

font

50 ms

www-player.css

www-player.css

11 ms

www-embed-player.js

www-embed-player.js

27 ms

base.js

base.js

50 ms

ad_status.js

ad_status.js

248 ms

lA2ntTx-2QuHkXZslM9sAF03Z9lhVUC55dA1orjIb5A.js

lA2ntTx-2QuHkXZslM9sAF03Z9lhVUC55dA1orjIb5A.js

240 ms

embed.js

embed.js

152 ms

id

id

49 ms

Create

Create

116 ms

Create

Create

118 ms

GenerateIT

GenerateIT

21 ms

GenerateIT

GenerateIT

22 ms

log_event

log_event

22 ms

log_event

log_event

15 ms

Accessibility Review

volzicht.nl accessibility score

86

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

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

volzicht.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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

volzicht.nl SEO score

86

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

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 Volzicht.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 Volzicht.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

volzicht.nl

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