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nfk.nl

https://nfk.nl· First analyzed 28 May 2026· Updated 28 May 2026
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nfk.nl
Desktop screenshot of nfk.nl
Mobile screenshot of nfk.nl
Mobile

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Hosting Provider

Osso B.V.

IP Address

185.37.124.48

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Groningen, The Netherlands

ASN

AS43366

CDN

Varnish

Nameservers

dns.resolver.domains.nl.ns.vip.nl.be.ns.vip.nl.

Performance

96

Core Web Vitals

Weight

First Contentful Paint
1.1 s10%
Speed Index
1.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
828 KB
30 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Craft CMS

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

3 Technologies Detected

Analytics

2
Google Analytics
Segment

CSS Frameworks

1
Tailwind CSS

SEO Analysis

B77/100
24
5
1
Meta Tags7/15
Content10/12
Headings8/8
Technical24/25
E-E-A-T2/7
Images3/7
Links2/5
URL5/5
Social5/5
Freshness4/4
Mobile4/4
Indexability3/3
N
nfk.nlnfk.nl

Home - NFK

NFK komt op voor de ruim 900.000 mensen die leven met of na kanker en hun naasten. Maar ook voor mensen met een erfelijke aanleg of predispositie voor kanker...

Description truncated.
Title Length10 chars

Recommended: 50-60 chars (~64px / 580px)

Description Length239 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (26/27) — critical for accessibility and SEO

6 issues found

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Crawlability

Sitemap

Type: index

28 URLs

28 sub-sitemaps

robots.txt

6 rules

Sitemap reference found

Local SEO

Local Search Readiness

22/100
Needs Work
5 12 2

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AI & LLM Readiness

D58/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
7/25
Citation
18/25

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:626
Token eff.:Optimal
Sections/1K:33.5
Depth:2/5

Structured Data

4 JSON-LD
Person×1.3(min)Organization×1.1(min)WebSiteLocalBusiness×1.1(min)BreadcrumbList

Citation Readiness

Opening Summary13w
Descriptive Headingsavg 5w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (7)
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.
A+
94/100
16
Passed
0
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
13/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
11/15
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.
56/100
B
102 mg
CO₂e / view
828.1 KB
Page Weight
80%
Cleaner Than
New Visitor
117 mg
vs
Returning (cached)
59 mg
Annual (10K/mo)
12.3 kg
Emission Segments
Data Center
23 mg
Network
25 mg
Device
55 mg
Resource Breakdown
JavaScript
154.0 KB
Images
274.9 KB
CSS
202.5 KB
Fonts
182.2 KB
HTML
14.6 KB
Green Hosting Not Verified
Osso B.V.
5 recommendations
  • •Carbon footprint recommendation preview...
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A

Security Score

83%Very Good
Static / Informational

HTTPS

No WAF

30d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

29.03.2026

Valid Until

27.06.2026

Subject Alternative Names (2)

nfk.nlwww.nfk.nl

SHA-256 Fingerprint

92:7C:B8:07:7F:6C:56:53:27:51:17:51:98:7C:76:09:EC:56:65:D7...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
age
7287
content-encoding
📦 Gzip(gzip)
content-length
14623
content-type
text/html; charset=UTF-8
date
Thu, 28 May 2026 06:12:45 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

nfk-nl.mail.protection.outlook.com

Domain Information

nfk.nl

Domain Age
22y 2m

Created

31.03.2004

Last Updated

11.11.2021

Registrar

Realtime Register

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
72/100
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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Moderat + Inter

WCAG AA
78/100
Readability
/30
21/30

18px · LH 1.50

Hierarchy
/20
20/20

3.11x ratio · ✓ H1→H6

WCAG
/25
21/25

4.6:1 min contrast

Performance
/25
16/25

2 fonts · 9 req

Heading Font

Moderat

Sans56px

Body Font

Inter

Sans18px

Contrast Ratio

4.6:1

WCAG AA (≥4.5:1)

Reading Comfort

~32 CPL

Narrow lines
56px
h1
40px
h2
24px
h3
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 26/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.6:1).

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

✅ Strong hierarchy: Headlines are 3.1x larger than body text.

Buy on MyFontsFluid TypeFlesch 26

Color Palette

9 unique colors
9.17:1 AAA Light
#ffffff
Primary· 39.800000000000004%
#4f4643
Secondary· 4.2%
#2e261f
Secondary· 7%
#3d332c
Secondary· 5.5%
#231710
Secondary· 4.6%

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

4 Resources

3
Scripts
1
Styles
1
Async
0
Defer

Top Script Sources

google-analytics.com(1)local(1)nfk.nl(1)

Website Identity

NFK

LocalBusiness

NFK komt op voor de ruim 900.000 mensen die leven met of na kanker en hun naasten. Maar ook voor mensen met een erfelijke aanleg of predispositie voor kanker. Het belang van de kankerpatiënt is de dagelijkse drijfveer in alles wat we doen.

nfk.nl/
22 years old
Location detected: 🇳🇱 Netherlandsvia tld
Realtime Register📧 Microsoft 365nl

Social Profiles

LinkedIn

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Last analyzed: 28 May 2026 at 06:12

Historical Analysis & Change Tracking

nfk.nl Technology Stack - Built With Tailwind CSS, Google Analytics, Segment | StackOptic | StackOptic