catalogueoflife.org

https://catalogueoflife.org· First analyzed 02 May 2026· Updated 02 May 2026

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catalogueoflife.org

Mobile

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Hosting Provider

Danmarks Tekniske Universitet

IP Address

130.225.43.34

Site Location

🇩🇰 Denmarkvia ip

Server Location

🇩🇰 Aarhus, Denmark

ASN

AS1835

Organization

Danmarks Tekniske Universitet

Server

Apache

CDN

Nameservers

ns-943.awsdns-53.net.ns-1212.awsdns-23.org.ns-1600.awsdns-08.co.uk.ns-508.awsdns-63.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.3 s10%

Speed Index

1.7 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.1 MB

43 requests

0–49

50–89

90–100

Architecture Stack

JAMstack

⚡ SSG

Frontend

Framework

Jekyllv4.2.2

Infrastructure

Hosting

Danmarks Tekniske Universitet

CDN

Technology Stack

9 Technologies Detected

CSS Frameworks

Tailwind CSS

Foundation Ant Design

Frameworks

UI Components

Icon Libraries

Fonts

Analytics

Web Servers

SEO Analysis

D55/100

Meta Tags5/15

Content10/12

Headings1/8

Technical15/25

E-E-A-T2/7

Images1/7

Links5/5

URL5/5

Social4/5

Freshness0/4

Mobile4/4

Indexability3/3

catalogueoflife.orgcatalogueoflife.org

COL | The Catalogue of Life

The Catalogue of Life

Title Length27 chars

Recommended: 50-60 chars (~163px / 580px)

Description Length21 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (8/8) — critical for accessibility and SEO

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

20 URLs

robots.txt

98 rules

Sitemap reference found

Local SEO

Local Search Readiness

7/100

Poor

2 14 1

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

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AI & LLM Readiness

D47/100

Bot Access

20/25

Machine Read.

11/25

Schema Data

6/25

Citation

10/25

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

nav

Text ratio:8%

Words:307

Token eff.:Optimal

Sections/1K:13

Depth:1/5

Structured Data

1 JSON-LD

Organization×1.1WebSite

sameAs entity links

Citation Readiness

Opening Summary92w

Descriptive Headingsavg 1.8w

Canonical URL

Open Graph2/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

49/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

8/20

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

Forms & Inputs

5/15

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

7/15

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.

42/100

134 mg

CO₂e / view

1.1 MB

Page Weight

70%

Cleaner Than

New Visitor

153 mg

Returning (cached)

76 mg

Annual (10K/mo)

16.0 kg

Emission Segments

Data Center

30 mg

Network

32 mg

Device

72 mg

Resource Breakdown

JavaScript

626.4 KB

Images

103.9 KB

CSS

344.2 KB

Fonts

896 B

HTML

5.0 KB

Green Hosting Not Verified

Danmarks Tekniske Universitet

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

60d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

02.04.2026

Valid Until

01.07.2026

Subject Alternative Names (10)

*.catalogoflife.org*.catalogueoflife.com*.catalogueoflife.org*.checklistbank.org*.dev.catalogueoflife.org*.dev.checklistbank.orgcatalogoflife.orgcatalogueoflife.com+2 more

SHA-256 Fingerprint

C9:FB:A7:EC:5F:93:D7:86:32:2C:40:C9:83:8D:41:7C:BE:E9:1C:5E...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

225

content-encoding

📦 Gzip(gzip)

content-length

4812

content-type

text/html

date

Sat, 02 May 2026 10:27:45 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

aspmx.l.google.com

alt4.aspmx.l.google.com

alt3.aspmx.l.google.com

alt2.aspmx.l.google.com

+1 more

Domain Information

catalogueoflife.org

Domain Age

24y 11m

Created

07.06.2001

Expires

07.06.2026

Last Updated

08.05.2025

Registrar

Amazon Registrar, Inc.

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.

61/100

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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica Neue

WCAG Partial

70/100

Readability

/30

21/30

14px · LH 1.60

Hierarchy

/20

11/20

1.21x ratio

WCAG

/25

17/25

2.85:1 min contrast

Performance

/25

21/25

System fonts

Heading Font

Helvetica Neue

Sans17px

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

2.85:1

19 issues

Reading Comfort

~48 CPL

Optimal (45–75)

17px

16px

14px

Minor Second

Scale

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

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

✅ Optimal line length: ~48 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 32/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 19 elements below WCAG AA threshold (min 2.9:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

GGoogle FontsFlesch 32

Color Palette

9 unique colors

4.96:1 AA Light

#ffffff

Background· 77%

#6f7166

Other· 3%

#c5c0b3

Primary· 4.1%

#b47945

Secondary· 2.4%

#664431

Secondary· 2.4%

#261f18

Secondary· 2.4%

#bcad97

Secondary· 1.5%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

PlausibleSMB

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(11)unpkg.com(2)cdn.jsdelivr.net(1)plausible.io(1)

Website Identity

The Catalogue of Life

www.catalogueoflife.org/

24 years old

Location detected: 🇩🇰 Denmarkvia ip

Amazon Registrar, Inc.📧 Google Workspace

Social Profiles

Facebook LinkedIn

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Last analyzed: 02 May 2026 at 10:31

Historical Analysis & Change Tracking