onh.nl

https://onh.nl· First analyzed 21 May 2026· Updated 21 May 2026

Export

onh.nl

Mobile

Sponsored

Hosting Provider

Rootnet Managed Servers BIT

IP Address

185.173.21.203

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Nijmegen, The Netherlands

ASN

AS12859

Server

Nginx

Nameservers

ns2.transip.eu.ns0.transip.net.ns1.transip.nl.

Performance

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%

7.3 MB

69 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPress

Infrastructure

Hosting

Rootnet Managed Servers BIT

Technology Stack

9 Technologies Detected

Analytics

Libraries

UI Components

CSS Frameworks

Icon Libraries

Tag Managers

Web Servers

Plugins

SEO Analysis

B78/100

Meta Tags13/15

Content10/12

Headings3/8

Technical24/25

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social4/5

Freshness4/4

Mobile3/4

Indexability3/3

onh.nlonh.nl

ONH.nl - Beleef de geschiedenis van Noord Holland

Ga mee op reis door de grote collectie historische verhalen en ontdek het cultureel erfgoed van Noord-Holland. Blijf op de hoogte van het laatste nieuws over...

Description truncated.

Title Length49 chars

Recommended: 50-60 chars (~291px / 580px)

Description Length191 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

22 URLs

22 sub-sitemaps

robots.txt

6 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

13/100

Poor

4 12 1

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D46/100

Bot Access

20/25

Machine Read.

6/25

Schema Data

4/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:11%

Words:3,462

Token eff.:Poor Structure

Structured Data

3 JSON-LD

WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary396w

Descriptive Headingsavg 6.5w

Canonical URL

Open Graph2/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

68/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

13/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

10/15

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

8/15

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

ARIA & Roles

2/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

4 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.

26/100

758 mg

CO₂e / view

7.3 MB

Page Weight

Cleaner Than

New Visitor

867 mg

Returning (cached)

433 mg

Annual (10K/mo)

91.0 kg

Emission Segments

Data Center

37 mg

Network

223 mg

Device

498 mg

Resource Breakdown

JavaScript

80.3 KB

Images

6.6 MB

CSS

706.1 KB

HTML

11.8 KB

Other

659 B

Green Hosting Verified

Rootnet

GWF Verified

7 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

51%Poor

Interactive

HTTPS

No WAF

52d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

13.04.2026

Valid Until

12.07.2026

Subject Alternative Names (1)

onh.nl

SHA-256 Fingerprint

6E:EA:54:80:74:5D:B0:F2:ED:2C:38:47:57:0B:C3:7D:C1:C2:DA:61...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Thu, 21 May 2026 00:15:27 GMT

link

<https://onh.nl/wp-json/>; rel="https://api.w.org/", <https:...

referrer-policy

same-origin

server

nginx

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt2.aspmx.l.google.com

aspmx2.l.google.com

alt1.aspmx.l.google.com

aspmx3.l.google.com

+1 more

Domain Information

onh.nl

Domain Age

26y 3m

Created

17.02.2000

Last Updated

13.05.2026

Registrar

team.blue nl B.V.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Legitimate interest basis 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.

70/100

Mobile Friendly25 breakpoints

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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Exo 2 + PT Sans

WCAG Partial

59/100

Readability

/30

18/30

14px · LH 1.60

Hierarchy

/20

8/20

WCAG

/25

17/25

4.38:1 min contrast

Performance

/25

16/25

2 fonts · 5 req

Heading Font

Exo 2

Sans

Body Font

PT Sans

Sans14px

Contrast Ratio

4.38:1

14 issues

Reading Comfort

~37 CPL

Narrow lines

36px

32px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 39/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 14 elements below WCAG AA threshold (min 4.4:1).

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

✅ Lean font stack: 2 font families keeps load times fast.

Buy on MyFontsFlesch 39

Color Palette

11 unique colors

5.56:1 AA Light

#ffffff

Background· 63.00000000000001%

#676963

Other· 3.7%

#543941

Primary· 4.6%

#c0b8b0

Secondary· 4.3%

#e5dbcb

Secondary· 3.8%

#8d7568

Secondary· 3.8%

#b5a194

Secondary· 2.5%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

onh.nl(12)googletagmanager.com(2)consent.cookiebot.com(2)consentcdn.cookiebot.com(1)

Website Identity

ONH.nl - Beleef de geschiedenis van Noord Holland

Ga mee op reis door de grote collectie historische verhalen en ontdek het cultureel erfgoed van Noord-Holland. Blijf op de hoogte van het laatste nieuws over musea, monumenten en archeologie.

onh.nl/

26 years old

Location detected: 🇳🇱 Netherlandsvia tld

team.blue nl B.V.📧 Google Workspacenl

Social Profiles

Facebook X (Twitter)Instagram

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Last analyzed: 21 May 2026 at 00:15

Historical Analysis & Change Tracking