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heerlen.nl

https://heerlen.nl· First analyzed 16 May 2026· Updated 16 May 2026
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heerlen.nl
Desktop screenshot of heerlen.nl
Mobile screenshot of heerlen.nl
Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

54.72.84.243

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇮🇪 Dublin, Ireland

ASN

AS16509

Organization

AWS EC2 (eu-west-1)

Nameservers

sec2.rcode0.net.ns1.d-zone.ca.ns2.d-zone.ca.sec1.rcode0.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
683 ms10%
Speed Index
888 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
469 KB
94 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Hybrid
⚙️ SSR
Frontend
Framework
Next.js
CMS
Drupal
Infrastructure
Hosting
Amazon Web Services (AWS)

Progressive Web App

Web ManifestTheme Color

Technology Stack

6 Technologies Detected

Icon Libraries

2
Font AwesomeIonicons

Analytics

2
Google Analytics
Matomo

Meta Frameworks

1
Next.jsv2.10.1

CSS Frameworks

1
Tailwind CSS

SEO Analysis

C69/100
22
6
2
Meta Tags4/15
Content8/12
Headings8/8
Technical21/25
E-E-A-T2/7
Images2/7
Links5/5
URL5/5
Social3/5
Freshness4/4
Mobile4/4
Indexability3/3
H
heerlen.nlheerlen.nl

Home | Gemeente Heerlen

No description available for this page.

Title Length23 chars

Recommended: 50-60 chars (~146px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Most images missing alt text (5/7) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

474 URLs

robots.txt

10 rules

Local SEO

Local Search Readiness

15/100
Poor
4 13 1

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

D49/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
1/25
Citation
17/25

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:1%
Words:427
Token eff.:Optimal
Sections/1K:25.8
Depth:2/5

Structured Data

2 JSON-LD
Person×1.3(min)

Citation Readiness

Opening Summary10w
Descriptive Headingsavg 3.7w
Canonical URL
Open Graph1/3
Twitter Card2/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
AI readiness recommendation preview...
Upgrade to view recommendations

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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
86/100
15
Passed
3
Critical
0
Warnings
Images & Alt Text
18/20
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
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
12/15
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.
80/100
A
47 mg
CO₂e / view
469.1 KB
Page Weight
90%
Cleaner Than
New Visitor
54 mg
vs
Returning (cached)
27 mg
Annual (10K/mo)
5.7 kg
Emission Segments
Data Center
2 mg
Network
14 mg
Device
31 mg
Resource Breakdown
HTML
35.6 KB
Other
433.5 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Interactive

HTTPS

No WAF

247d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

19.01.2026

Valid Until

18.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.heerlen.nlheerlen.nl

SHA-256 Fingerprint

7C:A7:DD:8A:8A:85:7F:6F:0A:35:E6:91:6A:C6:F9:97:25:7C:98:F4...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-headers
content-type
access-control-allow-methods
POST, GET, OPTIONS
cache-control
🟡 30s(public, s-maxage=60, max-age=30, stale-while-revalidate=59)
content-encoding
📦 Gzip(gzip)
content-security-policy
default-src 'self'; img-src * data: 'unsafe-inline' blob:; s...
content-security-policy-report-only
default-src 'self'; img-src * data: blob:; style-src * 'unsa...
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

fm02.as38915.net
fm01.as38915.net

Domain Information

heerlen.nl

Domain Age
29y 4m

Created

02.01.1997

Last Updated

15.01.2025

Registrar

Solido IT voor overheden

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected

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
71/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Montserrat

WCAG Partial
79/100
Readability
/30
21/30

19px · LH 1.50

Hierarchy
/20
19/20

2.14x ratio · ✓ H1→H6

WCAG
/25
19/25

1:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

Montserrat

Sans40px

Body Font

Montserrat

Sans19px

Contrast Ratio

1:1

1 issue

Reading Comfort

Single Font Family

left aligned
40px
h1
31px
h2
23px
h3
23px
h4
19px
p

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

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

⚠️ Hard to read: Flesch score 33/100. Simplify sentences for wider reach.

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

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

✅ Strong hierarchy: Headlines are 2.1x larger than body text.

Buy on MyFontsFlesch 33

Color Palette

13 unique colors
2.81:1 Fail Light
#ffffff
Background· 34%
#9f98a1
Other· 7.3%
#000000
Primary· 0%
#0b7978
Primary· 8.1%
#b1b5c9
Secondary· 6.6%
#b31fb2
Accent· 6.4%
#44616c
Secondary· 5.8%
#ece8ec
Secondary· 5.7%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Matomo (Piwik)Mid-Market
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

30 Resources

20
Scripts
10
Styles
1
Async
20
Defer

Top Script Sources

cuatro.sim-cdn.nl(19)heerlen.logging.simanalytics.nl(1)

Website Identity

Gemeente Heerlen

Gemeente Heerlen

GovernmentOrganization

Bezoek de website van Gemeente Heerlen voor meer informatie.

045-5605040
www.heerlen.nl
29 years old
Location detected: 🇳🇱 Netherlandsvia tld
Solido IT voor overhedennl

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Last analyzed: 16 May 2026 at 00:42

Historical Analysis & Change Tracking