rijksvaccinatieprogramma.nl

https://rijksvaccinatieprogramma.nl· First analyzed 12 May 2026· Updated 12 May 2026

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Mobile

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Hosting Provider

Rijksinstituut voor Volksgezondheid en Milieuhygiene

IP Address

131.224.250.222

Site Location

🇳🇱 Bilthoven, Netherlandsvia schema_nap

Server Location

🇳🇱 Nijmegen, Netherlands

ASN

AS1103

Organization

Rijksinstituut voor Volksgezondheid en Milieuhygiene

Server

Apache

Nameservers

ns2.surfnet.nl.ns1.surfnet.nl.ns2.ssc-campus.nl.ns1.ssc-campus.nl.

Performance

Core Web Vitals

Weight

First Contentful Paint

936 ms10%

Speed Index

1.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.7 MB

27 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

4 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Web Servers

SEO Analysis

A80/100

Meta Tags14/15

Content12/12

Headings8/8

Technical24/25

E-E-A-T2/7

Images2/7

Links5/5

URL5/5

Social1/5

Freshness0/4

Mobile4/4

Indexability3/3

rijksvaccinatieprogramma.nlrijksvaccinatieprogramma.nl

Rijksvaccinatieprogramma | Rijksvaccinatieprogramma.nl

Het Rijksvaccinatieprogramma beschermt kinderen al bijna 70 jaar tegen ernstige infectieziekten. Op deze site lees je over de ziekten en waarom vaccineren da...

Description truncated.

Title Length54 chars

Recommended: 50-60 chars (~326px / 580px)

Description Length179 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (5/8) — critical for accessibility and SEO

5 issues found

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Crawlability

Sitemap

Type: standard

824 URLs

robots.txt

163 rules

Sitemap reference found

Local SEO

Local Search Readiness

37/100

Needs Work

10 11

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AI & LLM Readiness

D49/100

Bot Access

21/25

Machine Read.

11/25

Schema Data

6/25

Citation

11/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

navheader/footer

Text ratio:8%

Words:504

Token eff.:Optimal

Sections/1K:25.8

Depth:2/5

Structured Data

3 JSON-LD

Organization×1.1WebSite

sameAs entity links

Citation Readiness

Opening Summary25w

Descriptive Headingsavg 2.6w

Canonical URL

Open Graph0/3

Twitter Card2/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

AI readiness recommendation preview...

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Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

85/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

17/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

9/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

1 recommendation

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

31/100

220 mg

CO₂e / view

1.7 MB

Page Weight

60%

Cleaner Than

New Visitor

252 mg

Returning (cached)

126 mg

Annual (10K/mo)

26.4 kg

Emission Segments

Data Center

49 mg

Network

53 mg

Device

118 mg

Resource Breakdown

JavaScript

452.8 KB

Images

203.5 KB

CSS

1.1 MB

HTML

45.5 KB

Other

600 B

Green Hosting Not Verified

Rijksinstituut voor Volksgezondheid en Milieuhygiene

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

61%Fair

Interactive

HTTPS

No WAF

57d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

08.07.2025

Valid Until

08.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (6)

rijksvaccinatieprogramma.nlwww.rijksvaccinatieprogramma.nlrsvirusprik.nlwww.rsvirusprik.nl22wekenprik.nlwww.22wekenprik.nl

SHA-256 Fingerprint

A5:77:0D:E4:04:0E:11:A0:70:8A:4F:9C:22:AB:1D:7C:50:33:23:AB...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 1 Hours(max-age=3600, public)

connection

Keep-Alive

content-security-policy-report-only

default-src 'self' https://themes.googleusercontent.com/ htt...

content-type

text/html; charset=UTF-8

content-language

date

Tue, 12 May 2026 11:21:25 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

externemail-mx2.rivm.nl

externemail.rivm.nl

Domain Information

rijksvaccinatieprogramma.nl

Domain Age

22y 7m

Created

15.10.2003

Last Updated

25.11.2025

Registrar

Rijksoverheid

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

71/100

Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1.0

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

RO Sans

WCAG AA

77/100

Readability

/30

24/30

16px · LH 1.50

Hierarchy

/20

18/20

2.5x ratio · ✓ H1→H6

WCAG

/25

22/25

6.08:1 min contrast

Performance

/25

13/25

1 font · 6 req

Heading Font

RO Sans

Sans40px

Body Font

RO Sans

Sans16px

Contrast Ratio

6.08:1

WCAG AA (≥4.5:1)

Reading Comfort

~35 CPL

Narrow lines

40px

30px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 18/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 6.1:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

Buy on MyFontsFlesch 18

Color Palette

11 unique colors

Light

#ffffff

Background· 34.8%

#f2d9e7

Primary· 14.200000000000001%

#aa0061

Accent· 13.7%

#e2d3cf

Secondary· 9.3%

#d5b2a7

Secondary· 5.6%

#603f41

Secondary· 5.5%

#8b7761

Secondary· 5.5%

#aba993

Secondary· 4.9%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

statistiek.rijksoverheid.nl(2)local(2)deploy.mopinion.com(1)

Website Identity

RIVM

Organization

Het Rijksinstituut voor Volksgezondheid en Milieu zet zich in voor een gezonde bevolking en een duurzame, veilige en gezonde leefomgeving voor huidige en toekomstige generaties. Dat doen we door wetenschap te verbinden aan praktijk en beleid. We adviseren op basis van wetenschappelijke kennis en ond

088 689 8989

rijksvaccinatieprogramma.nl/

22 years old

Antonie van Leeuwenhoeklaan 9, Bilthoven

3721 MA, Bilthoven

Location detected: 🇳🇱 Netherlands, Bilthovenvia schema_nap

Rijksoverheidnl

Social Profiles

Facebook X (Twitter)

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Last analyzed: 12 May 2026 at 12:47

Historical Analysis & Change Tracking