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3dcenter.org

https://3dcenter.org· First analyzed 07 May 2026· Updated 07 May 2026
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3dcenter.org
Desktop screenshot of 3dcenter.org
Mobile screenshot of 3dcenter.org
Mobile

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Hosting Provider

GD MASS Network

IP Address

37.61.206.102

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Strasbourg, France

ASN

AS8972

Organization

GD MASS Network

Server

Nginx

Nameservers

ns25.domaincontrol.com.ns26.domaincontrol.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
508 ms10%
Speed Index
660 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
126 KB
64 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Technology Stack

7 Technologies Detected

Analytics

2
Google Analytics
Segment

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Payments

1
PayPal

Web Servers

1
Nginx

SEO Analysis

D56/100
14
9
3
Meta Tags10/15
Content12/12
Headings3/8
Technical13/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
3
3dcenter.org3dcenter.org

3DCenter.org | Hintergründe, Fakten, Analysen zu Gamer-Hardware & IT

3DCenter ist die größte deutschsprachige Grafikkarten-Webseite. Schwerpunkte sind die Berichterstattung über Grafikkarten und andere Hardware für den Gamer, ...

Description truncated.
Title Length68 chars

Recommended: 50-60 chars (~414px / 580px)

Description Length232 chars

Recommended: 120-160 chars

Issues (3)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (24/29) — critical for accessibility and SEO
  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

11,956 URLs

robots.txt

38 rules

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

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

Sponsored

AI & LLM Readiness

F38/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
8/25

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
blockquotes
Text ratio:24%
Words:3,081
Token eff.:Good
Sections/1K:7.5
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary163w
Descriptive Headingsavg 3.2w
Canonical URL
Open Graph0/3
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.
C
67/100
10
Passed
3
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
14/20
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
4/15
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.
47/100
A+
16 mg
CO₂e / view
125.9 KB
Page Weight
95%
Cleaner Than
New Visitor
18 mg
vs
Returning (cached)
9 mg
Annual (10K/mo)
1.9 kg
Emission Segments
Data Center
4 mg
Network
4 mg
Device
8 mg
Resource Breakdown
JavaScript
24.7 KB
Images
9.2 KB
CSS
75.6 KB
HTML
16.3 KB
Green Hosting Not Verified
GD MASS Network
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

25%Critical
Critical / Transactional

HTTPS

No WAF

85d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

02.05.2026

Valid Until

31.07.2026

Subject Alternative Names (7)

3dcenter.de3dcenter.orgalt.3dcenter.orgm.3dcenter.orgmail.3dcenter.orgwww.3dcenter.dewww.3dcenter.org

SHA-256 Fingerprint

EF:C6:9B:0A:9D:B8:4C:74:AC:D3:FC:BD:B0:75:8C:DE:7D:D0:AB:5B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=2592000
cache-control
🔴 No Cache(store, no-cache, must-revalidate, post-check=0, pre-check=0)
content-encoding
📦 Gzip(gzip)
content-length
16406
content-type
text/html; charset=utf-8
cross-origin-opener-policy
same-origin
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

98

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mail.3dcenter.org

Domain Information

3dcenter.org

Domain Age
24y 3m

Created

28.01.2002

Expires

28.01.2027

Last Updated

01.02.2026

Registrar

Mesh Digital Limited

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

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.
D
41/100
Not 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.
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial
60/100
Readability
/30
17/30

13px · LH 1.50

Hierarchy
/20
9/20

1.2x ratio · ✓ H1→H6

WCAG
/25
14/25

1.04:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

-apple-system

Sans15px

Body Font

-apple-system

Sans13px

Contrast Ratio

1.04:1

7 issues

Reading Comfort

~99 CPL

Wide lines
15px
h1
18px
h2
13px
p
Minor Third
Scale

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Wide lines: ~99 chars/line. Use max-width: 65ch for comfortable reading.

❌ Very complex text: Flesch score 21/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.0:1).

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

Flesch 21

Color Palette

8 unique colors
Light
#ffffff
Background· 45.5%
#ef8c2b
Accent· 25.4%
#ee7500
Primary· 0%
#b2a597
Secondary· 5.7%
#f0a856
Accent· 5.2%
#c1762f
Accent· 4.7%

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

18 Resources

14
Scripts
4
Styles
4
Async
1
Defer

Top Script Sources

local(9)gstatic.com(1)google-analytics.com(1)translate.googleapis.com(1)translate.google.com(1)

Website Identity

3dcenter.org

24 years old
Location detected: 🇫🇷 Francevia ip
Mesh Digital Limitedde

Social Profiles

FacebookX (Twitter)

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Last analyzed: 07 May 2026 at 10:10

Historical Analysis & Change Tracking