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fediscience.org

https://fediscience.org· First analyzed 07 May 2026· Updated 07 May 2026
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fediscience.org
Desktop screenshot of fediscience.org
Mobile screenshot of fediscience.org
Mobile

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Hosting Provider

Hetzner
hetzner.com

IP Address

144.76.90.220

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Falkenstein, Germany

ASN

AS24940

Organization

Hetzner

Server

Mastodon

Nameservers

ns1088.ui-dns.com.ns1086.ui-dns.de.ns1058.ui-dns.org.ns1062.ui-dns.biz.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
1.0 s10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.4 MB
101 requests

Image Optimization

WebPAVIFResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Hetzner

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

1 Technologies Detected

CSS Frameworks

1
Tailwind CSS

SEO Analysis

C62/100
17
7
1
Meta Tags9/15
Content10/12
Headings7/8
Technical14/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
F
fediscience.orgfediscience.org

About - FediScience.org

fediscience.org is a social network for scientists run by FediScience e.V., an international association dedicated to promoting scientific communication.

Title Length23 chars

Recommended: 50-60 chars (~136px / 580px)

Description Length154 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (4/5) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

47 rules

Local SEO

Local Search Readiness

6/100
Poor
2 14 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

F29/100
Bot Access
7/25
Machine Read.
9/25
Schema Data
0/25
Citation
13/25

AI Bot Access

2/14 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
Text ratio:11%
Words:929
Token eff.:Optimal
Sections/1K:7.5

Structured Data

No Schema

Citation Readiness

Opening Summary56w
Descriptive Headingsavg 4w
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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
70/100
11
Passed
5
Critical
2
Warnings
Images & Alt Text
18/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
15/15
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
2/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 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.
61/100
C
149 mg
CO₂e / view
1.4 MB
Page Weight
60%
Cleaner Than
New Visitor
170 mg
vs
Returning (cached)
85 mg
Annual (10K/mo)
17.8 kg
Emission Segments
Data Center
7 mg
Network
44 mg
Device
98 mg
Resource Breakdown
JavaScript
721.0 KB
Images
106.0 KB
CSS
616.5 KB
HTML
15.5 KB
Other
11.5 KB
Green Hosting Verified
Hetzner Online GmbH
GWF Verified
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

81%Very Good
Interactive

HTTPS

No WAF

47d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

25.03.2026

Valid Until

23.06.2026

Subject Alternative Names (1)

fediscience.org

SHA-256 Fingerprint

39:95:C8:43:F1:3E:FC:DA:36:9D:F3:50:99:94:FD:3F:C4:98:4E:5C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 15s(max-age=15, public, stale-while-revalidate=30, stale-if-erro...)
content-encoding
📦 Gzip(gzip)
content-security-policy
base-uri 'none'; default-src 'none'; frame-ancestors 'none';...
content-type
text/html; charset=utf-8
date
Thu, 07 May 2026 09:06:24 GMT
etag
W/"9662b4f068bb880e897286c648a5c49e"
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx01.ionos.de
mx00.ionos.de

Domain Information

fediscience.org

Domain Age
5y 10m

Created

15.06.2020

Expires

15.06.2026

Last Updated

09.07.2025

Registrar

IONOS SE

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked
Data Protection Officer 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.
C
67/100
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, viewport-fit=cover
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

mastodon-font-sans-serif

WCAG Fail
66/100
Readability
/30
21/30

15px · LH 1.47

Hierarchy
/20
13/20

1.6x ratio

WCAG
/25
14/25

1:1 min contrast

Performance
/25
18/25

1 font · 3 req

Heading Font

mastodon-font-sans-serif

Sans24px

Body Font

mastodon-font-sans-serif

Sans15px

Contrast Ratio

1:1

44 issues

Reading Comfort

~36 CPL

Narrow lines
24px
h1
19px
h2
15px
h4
15px
p

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.47 ratio (ideal range 1.4–1.6).

❌ Low contrast: 44 elements fail WCAG AA (min 1.0:1). Increase text/background contrast.

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

⚠️ Fluid type without rem: clamp() detected but missing rem units. May fail WCAG 1.4.4 zoom test.

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

Buy on MyFontsFluid TypeFlesch 53

Color Palette

5 unique colors
Light
#181820
Primary· 68.6%
#36394c
Secondary· 16.3%
#66769a
Secondary· 5.9%
#b8e6f0
Accent· 5.2%
#2a2a39
Secondary· 4.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

8 Resources

3
Scripts
5
Styles
0
Async
0
Defer

Top Script Sources

local(3)

Website Identity

fediscience.org

support@fediscience.org
5 years old
Location detected: 🇩🇪 Germanyvia ip
IONOS SEen-GB

Social Profiles

GitHub

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Last analyzed: 07 May 2026 at 09:06

Historical Analysis & Change Tracking