observation.org

https://observation.org· First analyzed 09 May 2026· Updated 09 May 2026

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observation.org

Mobile

Sponsored

Hosting Provider

Naturalis

IP Address

145.136.253.21

Site Location

🇳🇱 Netherlandsvia ip

Server Location

🇳🇱 Rotterdam, Netherlands

ASN

AS1103

Organization

Naturalis

Server

Nginx

Nameservers

ns-339.awsdns-42.com.ns-545.awsdns-04.net.ns-1293.awsdns-33.org.ns-1622.awsdns-10.co.uk.

Performance

Core Web Vitals

Weight

First Contentful Paint

737 ms10%

Speed Index

958 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.6 MB

49 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

observation.orgobservation.org

Welcome - Observation.org

Biodiversity Citizen Science & Monitoring

Title Length33 chars

Recommended: 50-60 chars (~206px / 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:692

Token eff.:Optimal

Sections/1K:8.7

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary35w

Descriptive Headingsavg 4.5w

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.

25/100

330 mg

CO₂e / view

2.6 MB

Page Weight

30%

Cleaner Than

New Visitor

377 mg

Returning (cached)

188 mg

Annual (10K/mo)

39.5 kg

Emission Segments

Data Center

74 mg

Network

79 mg

Device

177 mg

Resource Breakdown

JavaScript

344.4 KB

Images

759.9 KB

CSS

1.5 MB

HTML

8.5 KB

Other

10.0 KB

Green Hosting Not Verified

Naturalis

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

36%Critical

Interactive

HTTPS

No WAF

69d

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

19.04.2026

Valid Until

18.07.2026

Subject Alternative Names (2)

*.observation.orgobservation.org

SHA-256 Fingerprint

06:85:F8:55:CA:0B:BC:DE:0F:36:3F:77:71:C3:2A:6C:6C:BA:2F:75...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

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

Sat, 09 May 2026 22:04:06 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)

aspmx3.googlemail.com

aspmx4.googlemail.com

aspmx5.googlemail.com

aspmx.l.google.com

+3 more

Domain Information

observation.org

Domain Age

23y 10m

Created

06.07.2002

Expires

06.07.2026

Last Updated

05.05.2026

Registrar

Amazon Registrar, Inc.

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

9 unique colors

Light

#ffffff

Primary· 58.400000000000006%

#9d8a5b

Secondary· 7.9%

#0266b1

Primary· 7.8%

#565137

Secondary· 7%

#67694a

Secondary· 5.6%

#a1b2a2

Secondary· 4%

#737c62

Secondary· 3%

#16405d

Accent· 2.5%

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

observation.org

23 years old

Location detected: 🇳🇱 Netherlandsvia ip

Amazon Registrar, Inc.📧 Google Workspaceen

Social Profiles

Facebook LinkedIn YouTube

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Last analyzed: 09 May 2026 at 22:04

Historical Analysis & Change Tracking