waarneming.nl

https://waarneming.nl· First analyzed 03 May 2026· Updated 03 May 2026

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waarneming.nl

Mobile

Sponsored

Hosting Provider

Naturalis

IP Address

145.136.253.21

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Rotterdam, Netherlands

ASN

AS1103

Organization

Naturalis

Server

Nginx

Nameservers

ns-138.awsdns-17.com.ns-1436.awsdns-51.org.ns-2016.awsdns-60.co.uk.ns-995.awsdns-60.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.4 s10%

Speed Index

1.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.3 MB

50 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

Naturalis

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

7 Technologies Detected

CSS Frameworks

Libraries

UI Components

Icon Libraries

Web Servers

Analytics

SEO Analysis

D59/100

Meta Tags8/15

Content12/12

Headings3/8

Technical13/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

waarneming.nlwaarneming.nl

Welcome - Waarneming.nl

Biodiversity Citizen Science & Monitoring

Title Length31 chars

Recommended: 50-60 chars (~194px / 580px)

Description Length41 chars

Recommended: 120-160 chars

Issues (1)

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

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

40 rules

Local SEO

Local Search Readiness

12/100

Poor

4 13 2

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

Sponsored

AI & LLM Readiness

F38/100

Bot Access

12/25

Machine Read.

13/25

Schema Data

0/25

Citation

13/25

AI Bot Access

5/14 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

nav

Text ratio:5%

Words:685

Token eff.:Optimal

Sections/1K:7.3

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary49w

Descriptive Headingsavg 3.6w

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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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.

53/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

9/20

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

9/15

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

ARIA & Roles

0/15

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

5 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.

23/100

288 mg

CO₂e / view

2.3 MB

Page Weight

50%

Cleaner Than

New Visitor

329 mg

Returning (cached)

165 mg

Annual (10K/mo)

34.6 kg

Emission Segments

Data Center

64 mg

Network

69 mg

Device

155 mg

Resource Breakdown

JavaScript

344.4 KB

Images

425.6 KB

CSS

1.5 MB

HTML

8.3 KB

Other

10.6 KB

Green Hosting Not Verified

Naturalis

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

36%Critical

Interactive

HTTPS

No WAF

74d

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/1.1

Valid From

17.04.2026

Valid Until

16.07.2026

Subject Alternative Names (2)

*.waarneming.nlwaarneming.nl

SHA-256 Fingerprint

62:B5:80:22:97:C7:C1:B8:D4:75:71:82:57:0D:A5:6A:19:10:11:3C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Sun, 03 May 2026 10:58:13 GMT

server

nginx/1.24.0 (Ubuntu)

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (7)

alt1.aspmx.l.google.com

aspmx5.googlemail.com

aspmx3.googlemail.com

aspmx2.googlemail.com

+3 more

Domain Information

waarneming.nl

Domain Age

26y 1m

Created

23.03.2000

Last Updated

07.03.2022

Registrar

Gandi

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

66/100

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, user-scalable=no

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Ubuntu

WCAG Partial

64/100

Readability

/30

24/30

14px · LH 1.43

Hierarchy

/20

8/20

WCAG

/25

18/25

2.39:1 min contrast

Performance

/25

14/25

1 font · 8 req

Heading Font

Ubuntu

Sans

Body Font

Ubuntu

Sans14px

Contrast Ratio

2.39:1

2 issues

Reading Comfort

~45 CPL

Optimal (45–75)

24px

20px

16px

14px

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

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~45 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 2.4:1).

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

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

Buy on MyFonts

Color Palette

8 unique colors

Light

#ffffff

Primary· 58.5%

#78795d

Secondary· 10.4%

#18699b

Accent· 9.1%

#e9edf1

Secondary· 5.3%

#829976

Secondary· 5.1%

#d2dadb

Border· 4.9%

#aaae99

Secondary· 3.8%

#2c5466

Secondary· 3.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(15)browser.sentry-cdn.com(1)scripts.simpleanalyticscdn.com(1)

Website Identity

waarneming.nl

26 years old

Location detected: 🇳🇱 Netherlandsvia tld

Gandi📧 Google Workspaceen

Social Profiles

Facebook LinkedIn YouTube

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Last analyzed: 03 May 2026 at 10:58

Historical Analysis & Change Tracking