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c3voc.de

https://c3voc.de· First analyzed 07 May 2026· Updated 07 May 2026
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c3voc.de
Desktop screenshot of c3voc.de
Mobile screenshot of c3voc.de
Mobile

Sponsored

Hosting Provider

in Berlin

IP Address

185.106.84.46

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Berlin, Germany

ASN

AS50472

Organization

in Berlin

Server

Nginx

Nameservers

ns.alb.c3voc.de.ns.bre.c3voc.de.ns.dus.c3voc.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
553 ms10%
Speed Index
719 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
122 KB
7 requests
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Hugov0.82.0
Infrastructure
Hosting
in Berlin

Technology Stack

2 Technologies Detected

Icon Libraries

1
Font Awesome

Web Servers

1
Nginx

SEO Analysis

C65/100
20
5
1
Meta Tags7/15
Content3/12
Headings8/8
Technical18/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
C
c3voc.dec3voc.de

CCC Video Operation Center

CCC Video Operation Center (C3VOC) is a working group consisting of Chaos Computer Club enthusiasts running lecture recording and streaming infrastructure on...

Description truncated.
Title Length26 chars

Recommended: 50-60 chars (~159px / 580px)

Description Length204 chars

Recommended: 120-160 chars

Issues (1)

  • • Very thin content (43 words). Search engines need substantial content for ranking.

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

9 URLs

robots.txt

5 rules

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.

Sponsored

AI & LLM Readiness

F26/100
Bot Access
3/25
Machine Read.
7/25
Schema Data
0/25
Citation
16/25

AI Bot Access

0/14 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:5%
Words:39
Token eff.:Too Short
Sections/1K:10
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 28w
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

Sponsored

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.
A
83/100
12
Passed
1
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •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.
65/100
A+
15 mg
CO₂e / view
122.4 KB
Page Weight
95%
Cleaner Than
New Visitor
17 mg
vs
Returning (cached)
9 mg
Annual (10K/mo)
1.8 kg
Emission Segments
Data Center
3 mg
Network
4 mg
Device
8 mg
Resource Breakdown
JavaScript
1.3 KB
Images
16.4 KB
CSS
12.9 KB
Fonts
89.8 KB
HTML
2.1 KB
Green Hosting Not Verified
in Berlin
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

75d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

22.04.2026

Valid Until

21.07.2026

Subject Alternative Names (1)

c3voc.de

SHA-256 Fingerprint

97:03:0B:6B:10:9E:7C:D0:13:4A:26:FE:1C:D4:19:51:D7:47:A6:C4...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin
*
connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-type
text/html
date
Thu, 07 May 2026 13:11:18 GMT
etag
W/"685447d5-180d"
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (1)

mail.c3voc.de

Domain Information

c3voc.de

Last Updated

17.04.2026

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.
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=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial
76/100
Readability
/30
21/30

16px · LH 1.25

Hierarchy
/20
17/20

2x ratio · ✓ H1→H6

WCAG
/25
17/25

1.4:1 min contrast

Performance
/25
21/25

System fonts

Heading Font

-apple-system

Sans32px

Body Font

-apple-system

Sans16px

Contrast Ratio

1.4:1

5 issues

Reading Comfort

Single Font Family

center aligned
32px
h1
24px
h2
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Tight line spacing (1.25). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 1.4:1).

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

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

Flesch 0

Color Palette

6 unique colors
14.64:1 AAA Dark
#212121
Other· 94%
#f4f4f4
Background· 1.1%

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

Sponsored

Scripts & Styles

3 Resources

1
Scripts
2
Styles
0
Async
0
Defer

Top Script Sources

local(1)

Website Identity

c3voc.de

Location detected: 🇩🇪 Germanyvia tld
en

Social Profiles

GitHub

Sponsored

Last analyzed: 07 May 2026 at 13:11

Historical Analysis & Change Tracking