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ellis.eu

https://ellis.eu· First analyzed 17 May 2026· Updated 17 May 2026
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ellis.eu
Desktop screenshot of ellis.eu
Mobile screenshot of ellis.eu
Mobile

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Hosting Provider

Hetzner
hetzner.com

IP Address

188.245.46.51

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Nuremberg, Germany

ASN

AS24940

Organization

Hetzner

Server

Nginx

Nameservers

ns1.first-ns.de.robotns2.second-ns.de.robotns3.second-ns.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
535 ms10%
Speed Index
696 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
581 KB
22 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Framework
Alpine.js
Infrastructure
Hosting
Hetzner

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

5 Technologies Detected

Frameworks

1
Alpine.js

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Web Servers

1
Nginxv1.27.5

Languages

1
PHPv8.3.27

SEO Analysis

B74/100
22
4
1
Meta Tags15/15
Content11/12
Headings3/8
Technical18/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
E
ellis.euellis.eu

European Laboratory for Learning and Intelligent Systems

ELLIS unites top AI researchers in Europe through Programs, Sites, and a PhD program to advance excellence in machine learning.

Title Length56 chars

Recommended: 50-60 chars (~339px / 580px)

Description Length127 chars

Recommended: 120-160 chars

Issues (1)

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

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

11,440 URLs

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

6/100
Poor
2 13 2

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

D48/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
0/25
Citation
15/25

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:4%
Words:711
Token eff.:Optimal
Sections/1K:15.5
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary94w
Descriptive Headingsavg 2.3w
Canonical URL
Open Graph2/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
B
73/100
9
Passed
1
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
18/20
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
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
79/100
A
59 mg
CO₂e / view
581.0 KB
Page Weight
80%
Cleaner Than
New Visitor
67 mg
vs
Returning (cached)
34 mg
Annual (10K/mo)
7.0 kg
Emission Segments
Data Center
3 mg
Network
17 mg
Device
39 mg
Resource Breakdown
JavaScript
249.3 KB
Images
171.4 KB
CSS
146.5 KB
HTML
13.8 KB
Green Hosting Verified
Hetzner Online GmbH
GWF Verified
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

56%Poor
Interactive

HTTPS

No WAF

62d

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

20.04.2026

Valid Until

19.07.2026

Subject Alternative Names (1)

ellis.eu

SHA-256 Fingerprint

73:1F:F3:C4:ED:12:99:54:9B:A4:F0:CB:1E:E6:4A:6F:7F:05:48:12...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-cache, private)
content-encoding
📦 Gzip(gzip)
content-security-policy
frame-ancestors 'self' https://ellis.eu https://preview.elli...
content-type
text/html; charset=utf-8
date
Sun, 17 May 2026 15:54:42 GMT
permissions-policy
interest-cohort=()
Good Warning Issue

Email Infrastructure

Google Workspace

Score

90

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

smtp.google.com

Domain Information

ellis.eu

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

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.
B
73/100
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...
Upgrade to view recommendations

Typography & Readability

Roboto Slab

WCAG Partial
71/100
Readability
/30
20/30

36px · LH 1.38

Hierarchy
/20
13/20

1.67x ratio · ✓ H1→H6

WCAG
/25
16/25

2.27:1 min contrast

Performance
/25
22/25

System fonts

Heading Font

Roboto Slab

Sans60px

Body Font

Roboto Slab

Sans36px

Contrast Ratio

2.27:1

17 issues

Reading Comfort

~37 CPL

Narrow lines
60px
h1
36px
h2
128px
h3
36px
p
Octave
Scale

✅ Excellent readability: 36px body text is ideal for all devices.

⚠️ Tight line spacing (1.38). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 9/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 17 elements below WCAG AA threshold (min 2.3:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Buy on MyFontsFlesch 9

Color Palette

5 unique colors
12.63:1 AAA Dark
#333333
Other· 68.60000000000001%
#ffffff
Text· 7.8%
#cad8ce
Primary· 3.2%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Matomo (Piwik)Mid-Market
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

8 Resources

5
Scripts
3
Styles
1
Async
0
Defer

Top Script Sources

local(3)analytics.ellis.eu(1)ellis.eu(1)

Website Identity

ellis.eu

Location detected: 🇩🇪 Germanyvia ip
📧 Google Workspaceen

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Last analyzed: 17 May 2026 at 15:55

Historical Analysis & Change Tracking