Tools & Wizards About Us
voedingscentrum.nl screenshot

Report Summary

  • 58

    Performance

    Renders faster than
    75% of other websites

  • 44

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 86

    SEO

    Google-friendlier than
    61% of websites

voedingscentrum.nl

Homepage Voedingscentrum | Voedingscentrum

Page Load Speed

3.1 sec in total

First Response

358 ms

Resources Loaded

2.5 sec

Page Rendered

259 ms

voedingscentrum.nl screenshot

About Website

Visit voedingscentrum.nl now to see the best up-to-date Voedingscentrum content for Netherlands and also check out these interesting facts you probably never knew about voedingscentrum.nl

Op Voedingscentrum.nl vind je onafhankelijke informatie over gezond eten, veilig eten en duurzaam eten. Actuele informatie over voeding voor consumenten en professionals.

Visit voedingscentrum.nl

Key Findings

We analyzed Voedingscentrum.nl page load time and found that the first response time was 358 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

voedingscentrum.nl performance score

58

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value8.4 s

2/100

25%

SI (Speed Index)

Value4.6 s

70/100

10%

TBT (Total Blocking Time)

Value170 ms

93/100

30%

CLS (Cumulative Layout Shift)

Value0.066

97/100

15%

TTI (Time to Interactive)

Value7.7 s

45/100

10%

Network Requests Diagram

voedingscentrum.nl

358 ms

www.voedingscentrum.nl

254 ms

nl.aspx

306 ms

default.min.css

180 ms

jquery.min.js

29 ms

Our browser made a total of 93 requests to load all elements on the main page. We found that 82% of them (76 requests) were addressed to the original Voedingscentrum.nl, 4% (4 requests) were made to Static.voedingscentrum.nl and 3% (3 requests) were made to Static-mijn.voedingscentrum.nl. The less responsive or slowest element that took the longest time to load (958 ms) belongs to the original domain Voedingscentrum.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 695.6 kB (39%)

Content Size

1.8 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Voedingscentrum.nl main page is 1.8 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. 50% of websites need less resources to load. Images take 900.2 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 56.6 kB

  • Original 73.2 kB
  • After minification 67.3 kB
  • After compression 16.6 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 56.6 kB or 77% of the original size.

Image Optimization

-3%

Potential reduce by 24.8 kB

  • Original 900.2 kB
  • After minification 875.3 kB

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. Voedingscentrum images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 488.3 kB

  • Original 682.4 kB
  • After minification 543.1 kB
  • After compression 194.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 488.3 kB or 72% of the original size.

CSS Optimization

-84%

Potential reduce by 125.9 kB

  • Original 149.4 kB
  • After minification 141.6 kB
  • After compression 23.5 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. Voedingscentrum.nl needs all CSS files to be minified and compressed as it can save up to 125.9 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 47 (57%)

Requests Now

82

After Optimization

35

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 82 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Voedingscentrum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

voedingscentrum.nl

voedingscentrum.nl

358 ms

www.voedingscentrum.nl

www.voedingscentrum.nl

254 ms

nl.aspx

nl.aspx

306 ms

default.min.css

default.min.css

180 ms

jquery.min.js

jquery.min.js

29 ms

modernizr.min.js

modernizr.min.js

260 ms

jquery.plugins.min.js

jquery.plugins.min.js

204 ms

scripts.min.js

scripts.min.js

275 ms

shadowbox.js

shadowbox.js

277 ms

flickr_init.js

flickr_init.js

279 ms

popup.js

popup.js

272 ms

GetFiles.aspx

GetFiles.aspx

273 ms

WebResource.axd

WebResource.axd

344 ms

ScriptResource.axd

ScriptResource.axd

348 ms

ScriptResource.axd

ScriptResource.axd

428 ms

GetFiles.aspx

GetFiles.aspx

435 ms

jquery-ui.min.js

jquery-ui.min.js

21 ms

autocomplete.min.js

autocomplete.min.js

287 ms

spinner.min.js

spinner.min.js

293 ms

jquery-ui-1.8.18.custom.css

jquery-ui-1.8.18.custom.css

343 ms

Telerik.Web.UI.WebResource.axd

Telerik.Web.UI.WebResource.axd

447 ms

sizzle.js

sizzle.js

154 ms

shadowbox-nl.js

shadowbox-nl.js

178 ms

shadowbox-img.js

shadowbox-img.js

186 ms

shadowbox-iframe.js

shadowbox-iframe.js

236 ms

swfobject.js

swfobject.js

240 ms

shadowbox-swf.js

shadowbox-swf.js

247 ms

shadowbox-jquery.js

shadowbox-jquery.js

268 ms

_v_c_vc_groentekookboek_hr.jpg-317-20160204134112-42.jpg

_v_c_vc_groentekookboek_hr.jpg-317-20160204134112-42.jpg

279 ms

banner_voedselafdruk_1.jpg

banner_voedselafdruk_1.jpg

299 ms

bgfoot.png

bgfoot.png

102 ms

logo-vc-zw-50.gif

logo-vc-zw-50.gif

103 ms

_v_c_vc_wwje_afvallen2014_cover_hr.jpg-9-20160204132700-42.jpg

_v_c_vc_wwje_afvallen2014_cover_hr.jpg-9-20160204132700-42.jpg

102 ms

swa_alert.png

swa_alert.png

104 ms

liggende-mensen.png

liggende-mensen.png

103 ms

zwanger.png

zwanger.png

102 ms

jump.png

jump.png

188 ms

weegschaal.png

weegschaal.png

187 ms

bloeddruk.png

bloeddruk.png

189 ms

boodschappen.png

boodschappen.png

187 ms

hne.jpg

hne.jpg

186 ms

ajax-loader.gif

ajax-loader.gif

188 ms

dc.js

dc.js

42 ms

gtm.js

gtm.js

42 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

259 ms

bgr-tommies.jpg

bgr-tommies.jpg

325 ms

headerbg.png

headerbg.png

246 ms

logo2012.png

logo2012.png

265 ms

search-white.png

search-white.png

244 ms

groen_pijltje-onder.png

groen_pijltje-onder.png

265 ms

groen_pijltje-rechts.png

groen_pijltje-rechts.png

322 ms

frutibol-webfont.woff

frutibol-webfont.woff

315 ms

sclose.gif

sclose.gif

321 ms

oranje.png

oranje.png

327 ms

recept-van-de-dag.jpg

recept-van-de-dag.jpg

332 ms

submit.png

submit.png

396 ms

facebook.png

facebook.png

398 ms

twitter.png

twitter.png

399 ms

googleplus.png

googleplus.png

401 ms

tweet.png

tweet.png

415 ms

fbpost.png

fbpost.png

423 ms

knop_eten-salade.jpg

knop_eten-salade.jpg

226 ms

knop-besparen.jpg

knop-besparen.jpg

228 ms

campagneheader-overgewicht.jpg

campagneheader-overgewicht.jpg

237 ms

calorie.png

calorie.png

468 ms

rss.png

rss.png

469 ms

googleplus.png

googleplus.png

469 ms

twitter.png

twitter.png

472 ms

facebook.png

facebook.png

496 ms

bgr-bottom-v2.png

bgr-bottom-v2.png

958 ms

archweb-webfont.woff

archweb-webfont.woff

550 ms

__utm.gif

__utm.gif

14 ms

analytics.js

analytics.js

38 ms

deurmat-2fnl-2fschijf-van-vijf.aspx.htm

deurmat-2fnl-2fschijf-van-vijf.aspx.htm

483 ms

deurmat-2fnl-2fmijn-gewicht.aspx.htm

deurmat-2fnl-2fmijn-gewicht.aspx.htm

485 ms

deurmat-2fnl-2fmijn-kind-en-ik.aspx.htm

deurmat-2fnl-2fmijn-kind-en-ik.aspx.htm

493 ms

deurmat-2fnl-2fmijn-boodschappen.aspx.htm

deurmat-2fnl-2fmijn-boodschappen.aspx.htm

510 ms

ui-bg_flat_100_666666_40x100.png

ui-bg_flat_100_666666_40x100.png

85 ms

ui-icons_ffffff_256x240.png

ui-icons_ffffff_256x240.png

160 ms

kader.png

kader.png

547 ms

autoplay.png

autoplay.png

549 ms

collect

collect

10 ms

collect

collect

63 ms

sluit.png

sluit.png

509 ms

prev-next.png

prev-next.png

512 ms

knop_eten-salade.jpg

knop_eten-salade.jpg

464 ms

knop-besparen.jpg

knop-besparen.jpg

505 ms

_v_c_vc_groentekookboek_hr.jpg-317-20160204134112-42.jpg

_v_c_vc_groentekookboek_hr.jpg-317-20160204134112-42.jpg

504 ms

campagneheader-overgewicht.jpg

campagneheader-overgewicht.jpg

498 ms

banner_voedselafdruk_1.jpg

banner_voedselafdruk_1.jpg

488 ms

schijf0_190.png

schijf0_190.png

209 ms

print.min.css

print.min.css

86 ms

nr-885.min.js

nr-885.min.js

16 ms

Accessibility Review

voedingscentrum.nl accessibility score

44

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

High

Some elements have a [tabindex] value greater than 0

Internationalization and localization

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

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Form elements do not have associated labels

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

voedingscentrum.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

SEO Factors

voedingscentrum.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 Voedingscentrum.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 Voedingscentrum.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

voedingscentrum.nl

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