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boekman.nl

https://boekman.nl· First analyzed 01 Jun 2026· Updated 01 Jun 2026
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boekman.nl
Desktop screenshot of boekman.nl
Mobile screenshot of boekman.nl
Mobile

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Hosting Provider

Rootnet Managed Servers BIT

IP Address

185.173.21.226

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Nijmegen, The Netherlands

ASN

AS12859

Server

Nginx

Nameservers

ns02.hostnet.nl.ns01.hostnet.nl.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
1.0 s10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.9 MB
56 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms
Boekman Theme by Van Onsv1.0.0Custom
by Saskia Bouten and Timo Verkroost
View Theme

Technology Stack

10 Technologies Detected

CSS Frameworks

2
Tailwind CSS
Foundation

Analytics

2
Google Analytics
Google Analytics 4

Plugins

2
Vo Gdpr Compliance
Yoast SEO

Libraries

1
jQuery

Icon Libraries

1
Font Awesome

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

A83/100
25
4
1
Meta Tags13/15
Content11/12
Headings8/8
Technical24/25
E-E-A-T0/7
Images3/7
Links4/5
URL5/5
Social4/5
Freshness4/4
Mobile4/4
Indexability3/3
B
boekman.nlboekman.nl

Boekmanstichting - Kenniscentrum voor kunst- en cultuurbeleid

De Boekmanstichting zorgt voor kennis over kunst- en cultuurbeleid als voeding voor een gefundeerd cultuurdebat.

Title Length61 chars

Recommended: 50-60 chars (~370px / 580px)

Description Length112 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (5/6) — critical for accessibility and SEO

5 issues found

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Crawlability

Sitemap

Type: index

16 URLs

16 sub-sitemaps

robots.txt

10 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

25/100
Needs Work
7 9 1

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AI & LLM Readiness

D53/100
Bot Access
20/25
Machine Read.
14/25
Schema Data
4/25
Citation
15/25

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
def. listsnavheader/footer
Text ratio:5%
Words:648
Token eff.:Optimal
Sections/1K:41.7
Depth:3/5

Structured Data

3 JSON-LD
WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary21w
Descriptive Headingsavg 3.2w
Canonical URL
Open Graph2/3
Twitter Card1/3
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
88/100
15
Passed
1
Critical
0
Warnings
Images & Alt Text
20/20
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
11/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
7/15
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.
59/100
C
196 mg
CO₂e / view
1.9 MB
Page Weight
50%
Cleaner Than
New Visitor
224 mg
vs
Returning (cached)
112 mg
Annual (10K/mo)
23.5 kg
Emission Segments
Data Center
10 mg
Network
58 mg
Device
129 mg
Resource Breakdown
JavaScript
117.9 KB
Images
199.8 KB
CSS
1.6 MB
HTML
16.4 KB
Other
1.7 KB
Green Hosting Verified
Rootnet
GWF Verified
3 recommendations
  • •Carbon footprint recommendation preview...
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D

Security Score

51%Poor
Interactive

HTTPS

No WAF

70d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.05.2026

Valid Until

10.08.2026

Subject Alternative Names (1)

www.boekman.nl

SHA-256 Fingerprint

A9:DF:2B:2A:DF:29:6E:7F:E2:7D:91:AB:5F:BD:CF:CC:68:27:43:44...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Mon, 01 Jun 2026 08:59:56 GMT
link
<https://www.boekman.nl/>; rel=shortlink
referrer-policy
same-origin
server
nginx
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

70

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

boekman-nl.mail.protection.outlook.com

Domain Information

boekman.nl

Domain Age
29 years

Created

27.05.1997

Last Updated

28.07.2024

Registrar

Hostnet B.V.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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.
B
74/100
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, maximum-scale=1.0
1 recommendation
  • •Mobile compatibility recommendation preview...
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Typography & Readability

Plantin + Untitled Sans

WCAG Partial
60/100
Readability
/30
20/30

16px · LH 1.60

Hierarchy
/20
15/20

1.31x ratio · ✓ H1→H6

WCAG
/25
10/25

1:1 min contrast

Performance
/25
15/25

2 fonts · 2 req

Heading Font

Plantin

Sans21px

Body Font

Untitled Sans

Sans16px

Contrast Ratio

1:1

14 issues

Reading Comfort

~33 CPL

Narrow lines
21px
h1
50px
h2
35px
h3
16px
p
Perfect Fifth
Scale

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

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 8/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 14 elements below WCAG AA threshold (min 1.0:1).

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

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

Buy on MyFontsFlesch 8

Color Palette

7 unique colors
2.76:1 Fail Light
#ffffff
Background· 17.9%
#9d9d89
Secondary· 3.7%
#f9423a
Primary· 58.89999999999999%
#2a100f
Primary· 7.9%
#f19892
Accent· 6.2%
#f2f1d9
Secondary· 3.4%
#b55754
Secondary· 2.1%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

19 Resources

15
Scripts
4
Styles
4
Async
0
Defer

Top Script Sources

boekman.nl(10)googletagmanager.com(3)google-analytics.com(1)cdnjs.cloudflare.com(1)

Website Identity

Boekmanstichting - Kenniscentrum voor kunst- en cultuurbeleid

De Boekmanstichting zorgt voor kennis over kunst- en cultuurbeleid als voeding voor een gefundeerd cultuurdebat.

020-6243736
www.boekman.nl/
29 years old
Location detected: 🇳🇱 Netherlandsvia tld
Hostnet B.V.📧 Microsoft 365nl-NL

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Last analyzed: 01 Jun 2026 at 09:00

Historical Analysis & Change Tracking