hetnatuurhistorisch.nl

https://hetnatuurhistorisch.nl· First analyzed 13 May 2026· Updated 13 May 2026

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Mobile

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Hosting Provider

Rootnet Managed Servers BIT

IP Address

185.173.20.159

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Nijmegen, The Netherlands

ASN

AS12859

Server

Nginx

Nameservers

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

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%

5.2 MB

43 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

TYPO3

Technology Stack

8 Technologies Detected

Fonts

Google Fonts Adobe Fonts (Typekit)Adobe Fonts

Analytics

CSS Frameworks

Icon Libraries

Web Servers

SEO Analysis

C61/100

Meta Tags4/15

Content11/12

Headings3/8

Technical22/25

E-E-A-T3/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

hetnatuurhistorisch.nlhetnatuurhistorisch.nl

Home

No description available for this page.

Title Length4 chars

Recommended: 50-60 chars (~27px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (55/57) — critical for accessibility and SEO

10 issues found

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Crawlability

Sitemap

Type: index

2 URLs

2 sub-sitemaps

robots.txt

Local SEO

Local Search Readiness

23/100

Needs Work

6 10 2

Sponsored

AI & LLM Readiness

D45/100

Bot Access

20/25

Machine Read.

8/25

Schema Data

3/25

Citation

14/25

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

header/footer

Text ratio:4%

Words:542

Token eff.:Optimal

Sections/1K:25.8

Depth:1/5

Structured Data

Microdata

Article×1.2microdata

Citation Readiness

Opening Summary32w

Descriptive Headingsavg 4.9w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

73/100

Passed

Critical

Warnings

Images & Alt Text

18/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

11/20

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

1/15

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.

34/100

533 mg

CO₂e / view

5.2 MB

Page Weight

15%

Cleaner Than

New Visitor

609 mg

Returning (cached)

304 mg

Annual (10K/mo)

63.9 kg

Emission Segments

Data Center

26 mg

Network

157 mg

Device

350 mg

Resource Breakdown

JavaScript

128.2 KB

Images

4.9 MB

CSS

159.2 KB

Fonts

859 B

HTML

10.2 KB

Green Hosting Verified

Rootnet

GWF Verified

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

56%Poor

Interactive

HTTPS

No WAF

81d

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

04.05.2026

Valid Until

02.08.2026

Subject Alternative Names (1)

www.hetnatuurhistorisch.nl

SHA-256 Fingerprint

3F:F1:7D:15:11:D3:FC:8A:F4:A6:86:D6:38:19:C2:A4:2F:C9:25:32...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(private, no-store)

content-encoding

📦 Gzip(gzip)

content-language

nl-NL

content-type

text/html; charset=utf-8

date

Wed, 13 May 2026 06:41:36 GMT

expect-ct

enforce,max-age=2592000

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

aspmx3.googlemail.com

aspmx2.googlemail.com

alt1.aspmx.l.google.com

alt2.aspmx.l.google.com

+1 more

Domain Information

hetnatuurhistorisch.nl

Domain Age

15y 2m

Created

16.02.2011

Last Updated

01.04.2022

Registrar

Hostnet B.V.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

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.

54/100

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, maximum-scale=1

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Afacad

WCAG AA

67/100

Readability

/30

18/30

18px · LH 1.67

Hierarchy

/20

7/20

WCAG

/25

22/25

4.59:1 min contrast

Performance

/25

20/25

1 font · 1 req

Heading Font

Afacad

Sans

Body Font

Afacad

Sans18px

Contrast Ratio

4.59:1

WCAG AA (≥4.5:1)

Reading Comfort

~37 CPL

Narrow lines

40px

30px

18px

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

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

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

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 1 font families keeps load times fast.

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

GGoogle Fonts AAdobe Fonts Buy on MyFontsFlesch 0

Color Palette

13 unique colors

6.77:1 AA Light

#ffffff

Background· 27.2%

#565d58

Other· 5.1%

#050507

Primary· 8.3%

#a09582

Secondary· 7.4%

#8c7359

Secondary· 7%

#d3cbc0

Secondary· 6.5%

#28211b

Secondary· 6.4%

#4d898d

Secondary· 6.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(2)googletagmanager.com(1)

Website Identity

hetnatuurhistorisch.nl

15 years old

Location detected: 🇳🇱 Netherlandsvia tld

Hostnet B.V.📧 Google Workspacenl

Social Profiles

Facebook Instagram Bluesky

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Last analyzed: 13 May 2026 at 06:41

Historical Analysis & Change Tracking