atlasleefomgeving.nl

https://atlasleefomgeving.nl· First analyzed 17 May 2026· Updated 17 May 2026

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Mobile

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Hosting Provider

Rijksinstituut voor Volksgezondheid en Milieuhygiene

IP Address

131.224.250.82

Site Location

🇳🇱 Bilthoven, Netherlandsvia schema_nap

Server Location

🇳🇱 Nijmegen, Netherlands

ASN

AS1103

Organization

Rijksinstituut voor Volksgezondheid en Milieuhygiene

Server

Apache

Nameservers

ns3.rijksoverheidnl.org.ns0.rijksoverheidnl.com.ns1.rijksoverheidnl.nl.ns2.rijksoverheidnl.eu.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.2 s10%

Speed Index

1.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

4.6 MB

31 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

5 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Analytics

Web Servers

SEO Analysis

B74/100

Meta Tags10/15

Content10/12

Headings8/8

Technical24/25

E-E-A-T2/7

Images2/7

Links5/5

URL5/5

Social1/5

Freshness0/4

Mobile4/4

Indexability3/3

atlasleefomgeving.nlatlasleefomgeving.nl

Atlas Leefomgeving | Atlas Leefomgeving

Verken je leefomgeving op de kaarten in de atlas; van luchtkwaliteit tot wandelroutes.

Title Length39 chars

Recommended: 50-60 chars (~236px / 580px)

Description Length86 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (9/12) — critical for accessibility and SEO

7 issues found

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Crawlability

Sitemap

Type: standard

1,019 URLs

robots.txt

161 rules

Sitemap reference found

Local SEO

Local Search Readiness

31/100

Needs Work

8 12

Sponsored

AI & LLM Readiness

D52/100

Bot Access

21/25

Machine Read.

13/25

Schema Data

6/25

Citation

12/25

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:8%

Words:400

Token eff.:Optimal

Sections/1K:42.5

Depth:2/5

Structured Data

3 JSON-LD

Organization×1.1WebSite

sameAs entity links

Citation Readiness

Opening Summary86w

Descriptive Headingsavg 2.7w

Canonical URL

Open Graph0/3

Twitter Card2/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (8)

AI readiness recommendation preview...

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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.

88/100

Passed

Critical

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

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

9/15

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.

23/100

585 mg

CO₂e / view

4.6 MB

Page Weight

15%

Cleaner Than

New Visitor

669 mg

Returning (cached)

334 mg

Annual (10K/mo)

70.2 kg

Emission Segments

Data Center

131 mg

Network

140 mg

Device

314 mg

Resource Breakdown

JavaScript

446.6 KB

Images

3.2 MB

CSS

960.4 KB

HTML

40.4 KB

Other

600 B

Green Hosting Not Verified

Rijksinstituut voor Volksgezondheid en Milieuhygiene

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

66%Fair

Interactive

HTTPS

No WAF

149d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

13.10.2025

Valid Until

13.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (5)

atlasleefomgeving.nlwww.atlasleefomgeving.nltest.atlasleefomgeving.nlacceptatie.atlasleefomgeving.nlontwikkel.atlasleefomgeving.nl

SHA-256 Fingerprint

6E:C6:D6:FA:8A:0B:32:22:B5:C9:2F:68:76:7B:FB:29:47:79:04:8B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 1 Hours(max-age=3600, public)

connection

Keep-Alive

content-security-policy-report-only

default-src 'self' https://themes.googleusercontent.com/ htt...

content-type

text/html; charset=UTF-8

content-language

date

Sat, 16 May 2026 21:08:23 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

Domain Information

atlasleefomgeving.nl

Domain Age

18y 2m

Created

29.02.2008

Last Updated

20.09.2021

Registrar

Rijksoverheid

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

70/100

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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

RO Sans

WCAG AA

77/100

Readability

/30

24/30

16px · LH 1.50

Hierarchy

/20

18/20

2.5x ratio · ✓ H1→H6

WCAG

/25

22/25

4.51:1 min contrast

Performance

/25

13/25

1 font · 5 req

Heading Font

RO Sans

Sans40px

Body Font

RO Sans

Sans16px

Contrast Ratio

4.51:1

WCAG AA (≥4.5:1)

Reading Comfort

~31 CPL

Narrow lines

40px

30px

16px

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

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

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

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

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

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

Buy on MyFontsFlesch 47

Color Palette

9 unique colors

5.03:1 AA Light

#ffffff

Background· 24.799999999999997%

#746c7b

Other· 2.8%

#b3d7ef

Accent· 20.7%

#d9ebf7

Background· 15.2%

#027bc7

Primary· 12.4%

#343d97

Secondary· 10.7%

#2686c6

Accent· 5.7%

#8faac0

Secondary· 5.4%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

statistiek.rijksoverheid.nl(2)local(2)deploy.mopinion.com(1)

Website Identity

rivm

Organization

Het Rijksinstituut voor Volksgezondheid en Milieu zet zich in voor een gezonde bevolking en een duurzame, veilige en gezonde leefomgeving voor huidige en toekomstige generaties. Dat doen we door wetenschap te verbinden aan praktijk en beleid. We adviseren op basis van wetenschappelijke kennis en ond

088 689 8989

www.atlasleefomgeving.nl/

18 years old

Antonie van Leeuwenhoeklaan 9, Bilthoven

3721 MA, Bilthoven

Location detected: 🇳🇱 Netherlands, Bilthovenvia schema_nap

Rijksoverheidnl

Social Profiles

Facebook X (Twitter)Bluesky

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Last analyzed: 17 May 2026 at 00:28

Historical Analysis & Change Tracking