Vzinfo.nl - SEO Checker

Overview of the SEO Check
Meta information
80% 
Page quality
55% 
Page structure
61% 
Link structure
85% 
Server
27% 
External factors
100% 
SEO Score
Response time
3.74 s
File size
43.70 kB
Words
387
Media files
6
Number of links
82 internal / 10 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
VZinfo | Volksgezondheid en Zorg
The length of the page title is perfect. (301 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
VZinfo staat voor betrouwbare informatie over ziekten, volksgezondheid, zorg en kosten. Gemaakt door experts van binnen en buiten het RIVM Rijksinstituut voor Volksgezondheid en Milieu (Rijksinstituut voor Volksgezondheid en Milieu).
The meta description is too long: 1457 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.vzinfo.nl/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: nl
Language defined in HTML: nl
Server location: Netherlands
The following language is defined by HTML: nl
Alternate/Hreflang Links
(Somewhat important)
The specified alternate links have no errors.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
The domain is no subdomain.
The domain length is good.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
descriptionVZinfo staat voor betrouwbare informatie over ziekten, volksgezondheid, zorg en kosten. Gemaakt door experts van binnen en buiten het RIVM Rijksinstituut voor Volksgezondheid en Milieu (Rijksinstituut voor Volksgezondheid en Milieu).
google-site-verificationPCePIfrhNtZ6e9yXgxTFN1D8DYQv8gyv7mDITlxJORA
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1.0
langnl
twitter:cardsummary_large_image
twitter:descriptionVZinfo staat voor betrouwbare informatie over ziekten, volksgezondheid, zorg en kosten. Gemaakt door experts van binnen en buiten het RIVM Rijksinstituut voor Volksgezondheid en Milieu (Rijksinstituut voor Volksgezondheid en Milieu).
x-ua-compatibleie=edge
charsetutf-8

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Page quality

Content
(Critically important)
There are only 387 words on this page. Good pages should have about 800 words of useful content.
The average number of words per sentence of 5.71 words is low.
19.4% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
The page contains a listing, which indicates a good text layout.
3 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 6 JavaScript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1.0" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 8 tags for this page.
Image SEO
(Somewhat important)
3 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

Page structure

H1 heading
(Critically important)
VZinfo
The H1 heading consists of only one word. There should be more information given.
The H1 heading is too short (6 characters). It should be at least 20 Characters long.
Headings
(Important)
Some headings occur twice on the page.

Heading structure

Heading levelContent
H1 VZinfo
H2 Informatie over Volksgezondheid en Zorg
H2 Op zoek naar feiten en cijfers?
H2 Atlas VZinfo
H2 10 jaar VZinfo
H2 Recent geactualiseerd
H2 Direct naar
H2 Contact
H2 Uitgelicht
H2 Zo werkt VZinfo
H2 Deel deze pagina
H2 Service
H3 Contact Duplicate text
H4 Atlas VZinfo Duplicate text
H4 10 jaar VZinfo Duplicate text
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
The number of internal links is ok.
All internal links are not using dynamic parameters.
There are 10 external links on this page.
LinkAttributesAnchor text
https://www.vzinfo.nl/Anchor Overslaan en naar de inhoud gaan
https://www.vzinfo.nl/Anchor Direct naar de hoofdnavigatie
https://www.vzinfo.nl/contactContact
https://www.vzinfo.nl/englishEnglish
https://www.vzinfo.nl/homeHome
https://www.vzinfo.nl/onderwerpenOnderwerpen A-Z
https://www.vzinfo.nl/dossiersDossiers
https://www.vzinfo.nl/dossiersOverzicht dossiers
/atlas-vzinfoAtlas VZinfo
/gezondheidsverschillenGezondheidsverschillen
/hersenaandoeningenHersenaandoeningen
/internationale-vergelijkingenInternationaal
/kosten-van-ziektenKosten van Ziekten
https://www.vzinfo.nl/leefstijlLeefstijl
https://www.vzinfo.nl/ouderenOuderen
https://www.vzinfo.nl/ranglijstenRanglijsten
/infographicsInfographics
/infographicsOverzicht infographics
/acute-zorg/infographicAcute zorg
/beroepsziekten/infographicBeroepsziekten
/dementie/infographicDementie
/eenzaamheid/infographicEenzaamheid
/zorg-rond-de-geboorte/infogra...Geboorte en zorg
/kosten-van-ziekten/infographicKosten van ziekten
/leefstijl/infographicText duplicate Leefstijl
/gezonde-levensverwachting/inf...Levensverwachting
/bevolking/infographicText duplicate Ouderen
/overgewicht/infographic/overg...Overgewicht
/bevolkingsonderzoek/infographicScreening en bevolkingsonderzoek
/seksueel-risicogedrag/infogra...Seksueel gedrag en gevolgen
https://www.vzinfo.nl/dashboardsDashboards
https://www.vzinfo.nl/dashboardsOverzicht dashboards
https://buurtatlas.vzinfo.nl/External Subdomain Anchor Buurtatlas
/kosten-van-ziekten/dashboardText duplicate Kosten van Ziekten
/digitale-zorg/monitor-digital...Monitor Digitale Zorg
/monitor-mondgezondheidMonitor Mondgezondheid
/sterfte/sterftecijfersSterftecijfers
/sterfte/regionaal/sterftecijfersSterftecijfers regionaal
/ziekenhuisopnamencijfersZiekenhuiszorg
/ziektelast-in-dalys/ziektelas...Ziektelast
https://www.vzinfo.nl/monitorsMonitors
https://www.vzinfo.nl/monitorsOverzicht monitors
/digitale-zorg/monitor-digital...Text duplicate Monitor Digitale Zorg
/monitor-missies-gezondheid-en...Subdomain Monitor missies Gezondheid Zorg
/monitor-mondgezondheidSubdomain Text duplicate Monitor Mondgezondheid
/prestatie-indicatorenPrestatie-indicatoren
https://www.vzinfo.nl/overOver VZinfo.nl
https://www.vzinfo.nl/nieuw/2025Nieuw en geactualiseerd
https://www.vzinfo.nl/expertsExperts en redactie
/veelgestelde-vragenVeelgestelde vragen
/bronnen-methoden-en-achtergro...Verantwoording
https://www.vzinfo.nl/mediaIn de media
https://www.vzinfo.nl/contactText duplicate Contact
https://www.vzinfo.nl/contactText duplicate Contact
https://www.vzinfo.nl/englishText duplicate English
https://www.vzinfo.nl/onderwerpenInformatie over Volksgezondheid en Zorg Cijfers en duiding voor professionals, door experts van binnen en buiten het RIVM.
A-TITLE Informatie over Volksgezondheid en Zorg
https://www.vzinfo.nl/onderwerpenOp zoek naar feiten en cijfers?
A-TITLE Onderwerpen
/atlas-vzinfoAtlas VZinfo Meer dan 500 kaarten brengen regionale verschillen in beeld, bijvoorbeeld rondom zorg en ziekten.
A-TITLE Atlas VZinfo
/vzinfo-10-jaar10 jaar VZinfo VZinfo is jarig! Zie onze feestpagina voor een terugblik op de ontwikkelingen in de afgelopen 10 jaar.
A-TITLE 10 jaar VZinfo
/atlas-vzinfo-kaarten-gezondhe...Kaarten Gezondheidsmonitor Jongvolwassenen 2024
https://www.vzinfo.nl/node/2031Schatting aantal mensen met een chronische ziekte door roken
/sociaaleconomische-gezondheid...Subdomain Dossier Sociaaleconomische gezondheidsverschillen
/ziekenhuisopnamenDashboard ziekenhuisopnamen
https://www.vzinfo.nl/nieuw/2025Bekijk alle updates
https://www.vzinfo.nl/nieuw/2025Subdomain Nieuw en geactualiseerd: updates april 2025
https://www.vzinfo.nl/dossiersText duplicate Dossiers
/infographicsText duplicate Infographics
https://www.vzinfo.nl/dashboardsText duplicate Dashboards
https://www.vzinfo.nl/monitorsText duplicate Monitors
/zorggegevensZorggegevens: informatie over gegevensbronnen
https://www.vzinfo.nl/contactStuur een bericht naar de redactie
/kosten-van-ziektenText duplicate Kosten van Ziekten
https://www.vzinfo.nl/leefstijlThemapagina Leefstijl
https://www.vzinfo.nl/ranglijstenText duplicate Ranglijsten
/prestatie-indicatorenText duplicate Prestatie-indicatoren
/zorggegevensText duplicate Zorggegevens: informatie over gegevensbronnen
https://www.rovid.nl/rivm/aco/...External Subdomain Video file high definition Publicatiedatum: 23-03-2023 MP4 | 7.4 MB
https://www.rovid.nl/rivm/aco/...External Subdomain Filmbestand Publicatiedatum: 18-11-2019 WEBM | 13.51 MB
https://www.rovid.nl/rivm/aco/...External Subdomain Audio description Publicatiedatum: 18-11-2019 MP3 | 531.75 kB
https://www.facebook.com/share...External Subdomain Facebook
A-TITLE Deel deze pagina via Facebook
https://x.com/intent/post?url=...External X
A-TITLE Deel deze pagina via X
https://www.linkedin.com/shari...External Subdomain LinkedIn
A-TITLE Deel deze pagina via LinkedIn
https://wa.me/send?text=https:...New window External WhatsApp
A-TITLE Deel deze pagina via WhatsApp
https://www.vzinfo.nl/overOver deze site
https://www.vzinfo.nl/contactText duplicate Contact
https://www.rivm.nl/abonneren/...External Subdomain Nieuwsbrief
https://www.vzinfo.nl/cookiesCookies
https://www.vzinfo.nl/disclaimerDisclaimer
/citeersuggestieCiteersuggestie
/responsible-disclosureResponsible disclosure
/toegankelijkheidToegankelijkheid
https://twitter.com/VZinfoNLExternal Volg ons
A-TITLE Volg ons

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.vzinfo.nl/"
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time is very slow (3.74 seconds). The response time should be less than 0.4 seconds. Slow websites are bad for search engine bots and also result in bad user experience.
This page loads 6 CSS files. This may affect the page load time negatively.
This page loads 6 JavaScript files. This may affect the load time negatively.
The file size of the HTML document is fine (44 kB).

HTTP Response Header

NameValue
dateFri, 01 Aug 2025 00:25:16 GMT
serverApache
cache-controlmax-age=3600, public
content-languagenl
x-content-type-optionsnosniff
x-frame-optionsSAMEORIGIN
expiresSun, 19 Nov 1978 05:00:00 GMT
varyCookie
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External factors

This website has excellent links from other websites.
This page has backlinks from 455 referring domains.
This page has 6,607 backlinks.
This page has backlinks from 320 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    https://example.com/robots.txt
# Ignored: https://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# https://www.robotstxt.org/robotstxt.html

User-agent: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
Disallow: /themes/
# Files
Disallow: /README.txt
Disallow: /web.config
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips/
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register
Disallow: /user/password
Disallow: /user/login
Disallow: /user/logout
Disallow: /media/oembed
Disallow: /*/media/oembed
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips/
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed
# External urls
Disallow: https://statistiek.rijksoverheid.nl/piwik/js/tracker.php

# Custom
Disallow: /agenda/month/*
Disallow: /agenda/maand/*
Disallow: /*?search

# Remove duplicate content from Google index. See D-RIVMweb-57041
Disallow: /*?search=*
Disallow: /*?objectid=*
Disallow: /*?sp=*
Disallow: /*?contenttype=*
Disallow: /*?type=*
#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    https://example.com/robots.txt
# Ignored: https://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# https://www.robotstxt.org/robotstxt.html

User-agent: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/README.txt
Disallow: /web.config
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register
Disallow: /user/password
Disallow: /user/login
Disallow: /user/logout
Disallow: /media/oembed
Disallow: /*/media/oembed
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed
#
# External urls
Disallow: https://statistiek.rijksoverheid.nl/piwik/js/tracker.php
#
# Custom
Disallow: /agenda/month/*
Disallow: /agenda/maand/*
Disallow: /*?search
#
# Remove duplicate content from Google index. See D-RIVMweb-57041
Disallow: /*?search=*
Disallow: /*?objectid=*
Disallow: /*?sp=*
Disallow: /*?contenttype=*
Disallow: /*?type=*
#
# Sitemap
Sitemap: https://www.vzinfo.nl/sitemap.xml
#
# Crawl delay
User-agent: anthropic-ai
Crawl-delay: 60
#
User-agent: ClaudeBot
Crawl-delay: 60
#
User-agent: Bytespider
Crawl-delay: 60
#
User-agent: SemrushBot
Crawl-delay: 60
#
User-agent: MJ12bot
Crawl-delay: 60
#
User-agent: barkrowler
Crawl-delay: 60
#
User-agent: WizenozeBot
Crawl-delay: 60
#
User-agent: GPTBot
Crawl-delay: 30
#
User-agent: Bingbot
Crawl-delay: 1
#
User-agent: AhrefsBot
Crawl-delay: 30
#
#
# User agent Disallow
User-agent: dotbot
Disallow: /
#
User-agent: fiperbot
Disallow: /
#
#
# Newsletter subscribe result status messages
Disallow: /en/node/140466
Disallow: /node/140466
Disallow: /en/node/140467
Disallow: /node/140467
Disallow: /en/node/140468
Disallow: /node/140468

Search preview

www.vzinfo.nl
VZinfo | Volksgezondheid en Zorg
VZinfo staat voor betrouwbare informatie over ziekten, volksgezondheid, zorg en kosten. Gemaakt door experts van binnen en buiten het RIVM Rijksinstituut voor Volksgezondheid en Milieu (Rijksinstituut voor Volksgezondheid en Milieu).

Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
VZinfo87%Check
en zorg65%Check
Volksgezondheid en Zorg65%Check
zorg62%Check
Volksgezondheid62%Check
binnen en buiten54%Check
Informatie50%Check
Nieuw en geactualiseerd48%Check
Volksgezondheid en Milieu47%Check
Kosten46%Check

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