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bonn.social

https://bonn.social· First analyzed 29 May 2026· Updated 29 May 2026
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bonn.social
Desktop screenshot of bonn.social
Mobile screenshot of bonn.social
Mobile

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Hosting Provider

taenzermedien GmbH

IP Address

217.76.102.133

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Mechernich, Germany

ASN

AS20886

Organization

taenzermedien GmbH

Server

Mastodon

Nameservers

ns04.taenzer.hosting.ns03.taenzer.hosting.ns01.taenzer.hosting.ns02.taenzer.hosting.

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%
2.5 MB
102 requests

Image Optimization

Lazy LoadWebPAVIFResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
taenzermedien GmbH

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

1 Technologies Detected

CSS Frameworks

1
Tailwind CSS

SEO Analysis

D56/100
17
9
1
Meta Tags8/15
Content6/12
Headings5/8
Technical14/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
B
bonn.socialbonn.social

About - Bonn.social

Bonn.social ist ein Mastodon-Instanz für Bonn, Rhein-Sieg und für alle, die Bonn und die Region mögen. ❤️

Title Length19 chars

Recommended: 50-60 chars (~111px / 580px)

Description Length105 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (4/6) — critical for accessibility and SEO

10 issues found

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Crawlability

Sitemap
robots.txt

6 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

F38/100
Bot Access
19/25
Machine Read.
8/25
Schema Data
0/25
Citation
11/25

AI Bot Access

13/14 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:5%
Words:360
Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary54w
Descriptive Headings
Canonical URL
Open Graph3/3
Twitter Card0/3
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.
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.
38/100
E
314 mg
CO₂e / view
2.5 MB
Page Weight
30%
Cleaner Than
New Visitor
359 mg
vs
Returning (cached)
179 mg
Annual (10K/mo)
37.7 kg
Emission Segments
Data Center
70 mg
Network
75 mg
Device
169 mg
Resource Breakdown
JavaScript
721.3 KB
Images
963.7 KB
CSS
828.2 KB
HTML
15.3 KB
Other
9.8 KB
Green Hosting Not Verified
taenzermedien GmbH
5 recommendations
  • •Carbon footprint recommendation preview...
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A

Security Score

81%Very Good
Interactive

HTTPS

No WAF

33d

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 (2)

bonn.socialwww.bonn.social

SHA-256 Fingerprint

EC:A1:46:8E:85:90:FC:8C:A8:D9:AC:EC:F1:E1:91:C3:9D:1B:66:30...

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
Fri, 29 May 2026 17:18:14 GMT
etag
W/"edf536e126c96a86e230b3b20b4888c1"
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

75

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

mail1.taenzer.hosting

Domain Information

bonn.social

Domain Age
11y 3m

Created

03.02.2015

Expires

03.02.2027

Last Updated

20.03.2026

Registrar

InterNetX GmbH

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.
B
76/100
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

Typography & Readability

mastodon-font-sans-serif

WCAG Partial
63/100
Readability
/30
20/30

15px · LH 1.47

Hierarchy
/20
11/20

1.6x ratio

WCAG
/25
16/25

1:1 min contrast

Performance
/25
16/25

1 font · 4 req

Heading Font

mastodon-font-sans-serif

Sans24px

Body Font

mastodon-font-sans-serif

Sans15px

Contrast Ratio

1:1

19 issues

Reading Comfort

~37 CPL

Narrow lines
24px
h1
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).

⚠️ Partial contrast: 19 elements below WCAG AA threshold (min 1.0:1).

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

⚠️ 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 50

Color Palette

8 unique colors
5.06:1 AA Light
#a69e95
Secondary· 7%
#302e37
Secondary· 4.5%
#181820
Primary· 69.2%
#54413c
Secondary· 4.8%
#91775c
Secondary· 4.2%
#c1b5a7
Secondary· 3.5%
#4d111f
Accent· 2%

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

bonn.social

email@bonn.digital
11 years old
Location detected: 🇩🇪 Germanyvia ip
InterNetX GmbHen-GB

Social Profiles

GitHub

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Last analyzed: 29 May 2026 at 17:18

Historical Analysis & Change Tracking