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rathenau.nl

https://rathenau.nl· First analyzed 08 May 2026· Updated 08 May 2026
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rathenau.nl
Desktop screenshot of rathenau.nl
Mobile screenshot of rathenau.nl
Mobile

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Hosting Provider

Infrapod

IP Address

185.223.163.66

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Middelburg, Netherlands

ASN

AS212098

Organization

Infrapod

Server

Nginx

Nameservers

ns3.surfnet.nl.ns1.surfnet.nl.ns1.zurich.surf.net.ns2.surfnet.nl.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
579 ms10%
Speed Index
753 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.5 MB
46 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

6 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Matomo

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

B74/100
23
4
1
Meta Tags9/15
Content11/12
Headings8/8
Technical20/25
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social1/5
Freshness2/4
Mobile4/4
Indexability3/3
R
rathenau.nlrathenau.nl

Wetenschap, technologie en innovatie in de samenleving | Rathenau I...

Het Rathenau Instituut houdt zich al 40 jaar bezig met onderzoek en debat over de impact van wetenschap, technologie en innovatie op de samenleving.

Title truncated.
Title Length75 chars

Recommended: 50-60 chars (~446px / 580px)

Description Length148 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (75 chars, ~446px). Will be truncated in search results.

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

2 sub-sitemaps

robots.txt

54 rules

Sitemap reference found

Local SEO

Local Search Readiness

24/100
Needs Work
7 9 2

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AI & LLM Readiness

D47/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
0/25
Citation
16/25

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:5%
Words:692
Token eff.:Optimal
Sections/1K:41.9
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary41w
Descriptive Headingsavg 5.5w
Canonical URL
Open Graph1/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
AI readiness recommendation preview...
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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.
A
80/100
12
Passed
2
Critical
1
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
10/15
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.
2 recommendations
  • •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.
69/100
C
154 mg
CO₂e / view
1.5 MB
Page Weight
60%
Cleaner Than
New Visitor
176 mg
vs
Returning (cached)
88 mg
Annual (10K/mo)
18.5 kg
Emission Segments
Data Center
8 mg
Network
45 mg
Device
101 mg
Resource Breakdown
JavaScript
125.4 KB
Images
1023.3 KB
CSS
25.1 KB
Fonts
333.3 KB
HTML
17.3 KB
Other
2.2 KB
Green Hosting Verified
DevNomads
GWF Verified
4 recommendations
  • •Carbon footprint recommendation preview...
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A

Security Score

86%Very Good
Interactive

HTTPS

No WAF

61d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

10.04.2026

Valid Until

09.07.2026

Subject Alternative Names (2)

rathenau.nlwww.rathenau.nl

SHA-256 Fingerprint

DB:4C:40:23:7B:20:E0:0D:2C:C1:BD:57:B8:7B:E9:B7:5D:D9:81:23...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 900s(max-age=900, public)
content-encoding
📦 Gzip(gzip)
content-language
nl
content-length
17466
content-security-policy
report-uri /report-csp-violation
content-type
text/html; charset=UTF-8
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

98

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

rathenau-nl.mail.protection.outlook.com

Domain Information

rathenau.nl

Domain Age
26y 6m

Created

21.10.1999

Last Updated

31.03.2026

Registrar

SURF B.V.

DNSSEC
Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner
Cookiebot
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Cookiebot
Privacy policy page linked

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.
C
67/100
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
2 recommendations
  • •Mobile compatibility recommendation preview...
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Typography & Readability

Inter

WCAG AA
85/100
Readability
/30
22/30

22px · LH 1.50

Hierarchy
/20
20/20

3.27x ratio · ✓ H1→H6

WCAG
/25
23/25

4.87:1 min contrast

Performance
/25
20/25

1 font · 3 req

Heading Font

Inter

Sans72px

Body Font

Inter

Sans22px

Contrast Ratio

4.87:1

WCAG AA (≥4.5:1)

Reading Comfort

~33 CPL

Narrow lines
72px
h1
52px
h2
40px
h3
22px
p

✅ Excellent readability: 22px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 12/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.9:1).

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

✅ Strong hierarchy: Headlines are 3.3x larger than body text.

Buy on MyFontsFluid Type (rem)Flesch 12

Color Palette

9 unique colors
4.96:1 AA Light
#ffffff
Background· 82.1%
#70706e
Other· 1.8%
#a28490
Secondary· 2.5%
#971245
Primary· 1.9%
#35292e
Secondary· 1.9%

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

3
Google Tag ManagerFree
Google AnalyticsFree
Matomo (Piwik)Mid-Market

User behavior and product analytics

1

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

20 Resources

14
Scripts
6
Styles
3
Async
0
Defer

Top Script Sources

local(11)googletagmanager.com(2)flink-matomo.flinkinternet.nl(1)

Website Identity

rathenau.nl

info@rathenau.nl
0703421542
26 years old

Anna van Saksenlaan 512593 HW Den Haag

Location detected: 🇳🇱 Netherlandsvia tld
SURF B.V.📧 Microsoft 365nl

Social Profiles

InstagramLinkedIn

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Last analyzed: 08 May 2026 at 09:46

Historical Analysis & Change Tracking