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openluchtmuseum.nl

https://openluchtmuseum.nl· First analyzed 07 May 2026· Updated 07 May 2026
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openluchtmuseum.nl
Desktop screenshot of openluchtmuseum.nl
Mobile screenshot of openluchtmuseum.nl
Mobile

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Hosting Provider

Driebit Hosting B.V.

IP Address

83.98.140.23

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS8315

Organization

Driebit Hosting B.V.

Nameservers

ns2.driebit.nl.ns1.driebit.nl.

Performance

94

Core Web Vitals

Weight

First Contentful Paint
1.2 s10%
Speed Index
1.6 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.6 MB
61 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Driebit Hosting B.V.

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Advertising

1
TikTok Pixel

Popups & Forms

1
Sleeknote

SEO Analysis

C67/100
20
6
1
Meta Tags9/15
Content10/12
Headings6/8
Technical19/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
O
openluchtmuseum.nlopenluchtmuseum.nl

Nederlands Openluchtmuseum

In het Openluchtmuseum komt het verleden tot leven. Een dagje uit voor de hele familie, met school, een zakelijke bijeenkomst of feestlocatie.

Title Length26 chars

Recommended: 50-60 chars (~165px / 580px)

Description Length142 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (4/4) — critical for accessibility and SEO

7 issues found

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Crawlability

Sitemap

Type: standard

1,336 URLs

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

18/100
Poor
5 11 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

D48/100
Bot Access
20/25
Machine Read.
12/25
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
def. listsnavheader/footer
Text ratio:2%
Words:521
Token eff.:Optimal
Sections/1K:138.2
Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary40w
Descriptive Headingsavg 4w
Canonical URL
Open Graph3/3
Twitter Card3/3
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.
C
65/100
10
Passed
4
Critical
0
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
15/20
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
6/15
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.
4/100
F
453 mg
CO₂e / view
3.6 MB
Page Weight
15%
Cleaner Than
New Visitor
518 mg
vs
Returning (cached)
259 mg
Annual (10K/mo)
54.4 kg
Emission Segments
Data Center
101 mg
Network
109 mg
Device
243 mg
Resource Breakdown
JavaScript
228.3 KB
Images
19.1 KB
CSS
3.1 MB
HTML
98.4 KB
Other
123.3 KB
Green Hosting Not Verified
Driebit Hosting B.V.
7 recommendations
  • •Carbon footprint recommendation preview...
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C

Security Score

61%Fair
Interactive

HTTPS

No WAF

33d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.03.2026

Valid Until

10.06.2026

Subject Alternative Names (5)

collectie.openluchtmuseum.nlnederlandsopenluchtmuseum.nlopenluchtmuseum.nlwww.nederlandsopenluchtmuseum.nlwww.openluchtmuseum.nl

SHA-256 Fingerprint

14:F8:23:E6:76:A2:64:1A:12:B3:F4:E0:FE:18:84:2C:86:04:D8:0F...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)
content-length
100466
content-type
text/html; charset=utf-8
date
Thu, 07 May 2026 08:03:31 GMT
expires
Wed, 10 Dec 2008 14:30:00 GMT
p3p
CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

93

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

openluchtmuseum-nl.mail.protection.outlook.com

Domain Information

openluchtmuseum.nl

Domain Age
29y 11m

Created

29.05.1996

Last Updated

29.01.2019

Registrar

Driebit Hosting 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
69/100
Mobile Friendly
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
3 recommendations
  • •Mobile compatibility recommendation preview...
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Typography & Readability

GT + Cerebri

WCAG Partial
72/100
Readability
/30
26/30

19px · LH 1.47

Hierarchy
/20
17/20

4.55x ratio

WCAG
/25
16/25

1:1 min contrast

Performance
/25
13/25

2 fonts · 5 req

Heading Font

GT

Sans86px

Body Font

Cerebri

Sans19px

Contrast Ratio

1:1

9 issues

Reading Comfort

~37 CPL

Narrow lines
86px
h1
35px
h2
19px
h3
29px
h4
19px
p

✅ Excellent readability: 19px body text is ideal for all devices.

✅ Optimal line spacing: 1.47 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 47/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 4.5x larger than body text.

Buy on MyFontsFlesch 47

Color Palette

11 unique colors
Dark
#36393f
Secondary· 9.1%
#433580
Primary· 28.6%
#90a8c3
Secondary· 13.3%
#212830
Secondary· 11.6%
#afbbca
Secondary· 9.3%
#8590a0
Secondary· 6.6%
#606f80
Secondary· 6.3%
#8b6e62
Secondary· 4.1%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Lead Generation

1
SleeknoteSMB

Popups, forms, and lead capture tools

Advertising

1
TikTok PixelMid-Market

Ad platforms and retargeting pixels

3

Categories

4

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

14 Resources

13
Scripts
1
Styles
9
Async
0
Defer

Top Script Sources

analytics.tiktok.com(3)googletagmanager.com(3)sleeknotestaticcontent.sleeknote.com(3)sleeknotecustomerscripts.sleeknote.com(1)lessonup.com(1)

Website Identity

openluchtmuseum.nl

29 years old

Hoeferlaan 46816 SG ArnhemAlle contactgegevens

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

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Last analyzed: 07 May 2026 at 08:03

Historical Analysis & Change Tracking