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clariah.nl

https://clariah.nl· First analyzed 14 May 2026· Updated 14 May 2026
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clariah.nl
Desktop screenshot of clariah.nl
Mobile screenshot of clariah.nl
Mobile

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Hosting Provider

Knaw

IP Address

195.169.88.31

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Amersfoort, Netherlands

ASN

AS1103

Organization

Knaw

Server

Nginx

Nameservers

ns0.socialhistoryservices.org.ns1.zurich.surf.net.ns1.surfnet.nl.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
584 ms10%
Speed Index
759 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.7 MB
52 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9.4
cms
Twenty Twenty-Fourv1.3
by the WordPress team
View Theme

Technology Stack

10 Technologies Detected

Plugins

4
Contact Form 7
Events Manager
Reactpress
Zotpress

Libraries

2
jQueryv3.7.1
jQuery UI

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Web Servers

1
Nginx

Languages

1
PHPv8.2.31

SEO Analysis

D48/100
14
8
3
Meta Tags4/15
Content7/12
Headings8/8
Technical14/25
E-E-A-T0/7
Images2/7
Links2/5
URL5/5
Social0/5
Freshness0/4
Mobile3/4
Indexability3/3
C
clariah.nlclariah.nl

CLARIAH-NL – Common Lab Research Infrastructure for the Arts and Hu...

No description available for this page.

Title truncated.
Title Length75 chars

Recommended: 50-60 chars (~464px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

  • • Title is too long (75 chars, ~464px). Will be truncated in search results.
  • • Missing meta description — important for click-through rates in SERPs
  • • Most images missing alt text (20/21) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

8 URLs

8 sub-sitemaps

robots.txt

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

F33/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
6/25

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
nav
Text ratio:1%
Words:239
Token eff.:Too Short
Sections/1K:8.4
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary22w
Descriptive Headingsavg 1w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
AI readiness recommendation preview...
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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
89/100
15
Passed
1
Critical
0
Warnings
Images & Alt Text
18/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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
15/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

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.
30/100
D
218 mg
CO₂e / view
1.7 MB
Page Weight
60%
Cleaner Than
New Visitor
249 mg
vs
Returning (cached)
124 mg
Annual (10K/mo)
26.1 kg
Emission Segments
Data Center
49 mg
Network
52 mg
Device
117 mg
Resource Breakdown
JavaScript
232.0 KB
Images
994.2 KB
CSS
513.3 KB
HTML
21.0 KB
Green Hosting Not Verified
Knaw
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

151d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.10.2025

Valid Until

12.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

clariah.nlwww.clariah.nl

SHA-256 Fingerprint

F0:D6:B3:B3:BE:D5:AF:44:E1:32:C0:71:3C:6C:D7:C8:18:62:07:FD...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-length
21193
content-type
text/html; charset=UTF-8
date
Thu, 14 May 2026 05:22:04 GMT
server
nginx
vary
Accept-Encoding
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

50

SPF
DKIM
DMARC

MX Records (1)

clariah-nl.mail.protection.outlook.com

Domain Information

clariah.nl

Domain Age
14y 6m

Created

03.11.2011

Last Updated

03.06.2020

Registrar

SURF B.V.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked
Data Protection Officer mentioned

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.
A
81/100
Mobile Friendly11 breakpoints
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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Cardo + Inter

WCAG AA
82/100
Readability
/30
23/30

17px · LH 1.55

Hierarchy
/20
16/20

2.38x ratio · ✓ H1→H6

WCAG
/25
23/25

5.73:1 min contrast

Performance
/25
20/25

2 fonts · 2 req

Heading Font

Cardo

Serif40px

Body Font

Inter

Sans17px

Contrast Ratio

5.73:1

WCAG AA (≥4.5:1)

Reading Comfort

~35 CPL

Narrow lines
40px
h1
40px
h2
17px
p
Minor Second
Scale

✅ Excellent readability: 17px body text is ideal for all devices.

✅ Optimal line spacing: 1.55 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 23/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.7:1).

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

✅ Strong hierarchy: Headlines are 2.4x larger than body text.

Buy on MyFontsFluid Type (rem)Flesch 23

Color Palette

7 unique colors
3.7:1 AA Large Light
#ffffff
Background· 66.30000000000001%
#8e837b
Secondary· 3%
#000c48
Primary· 14.100000000000001%
#0a0f2c
Accent· 4.1%
#22233c
Secondary· 1.6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

25 Resources

20
Scripts
5
Styles
0
Async
1
Defer

Top Script Sources

clariah.nl(19)kit.fontawesome.com(1)

Website Identity

clariah.nl

14 years old
Location detected: 🇳🇱 Netherlandsvia tld
SURF B.V.📧 Microsoft 365en-US

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Last analyzed: 14 May 2026 at 05:22

Historical Analysis & Change Tracking