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petra.de

https://petra.de· First analyzed 31 May 2026· Updated 31 May 2026
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petra.de
Desktop screenshot of petra.de
Mobile screenshot of petra.de
Mobile

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Hosting Provider

First Colo

IP Address

212.224.122.231

Site Location

🇩🇪 Hamburg, Germanyvia schema_nap

Server Location

🇩🇪 Neu-Isenburg, Germany

ASN

AS44066

Organization

First Colo

CDN

Fastly

Nameservers

ns6.klambt.de.ns6.klambt.services.ns5.klambt.de.ns5.klambt.services.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
802 ms10%
Speed Index
1.0 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
990 KB
91 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

4 Technologies Detected

Analytics

2
Google Analytics
Matomo

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

SEO Analysis

B71/100
20
6
1
Meta Tags12/15
Content11/12
Headings1/8
Technical21/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
P
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Title Length33 chars

Recommended: 50-60 chars (~198px / 580px)

Description Length121 chars

Recommended: 120-160 chars

Issues (1)

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

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

21 URLs

robots.txt

62 rules

Sitemap reference found

Local SEO

Local Search Readiness

24/100
Needs Work
7 12 1

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AI & LLM Readiness

D45/100
Bot Access
18/25
Machine Read.
11/25
Schema Data
4/25
Citation
12/25

AI Bot Access

11/14 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
data-nosnippet

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
navheader/footer
Text ratio:4%
Words:554
Token eff.:Optimal
Depth:2/5

Structured Data

3 JSON-LD
WebSiteSearchAction
sameAs entity links

Citation Readiness

Opening Summary
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 (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
75/100
11
Passed
4
Critical
1
Warnings
Images & Alt Text
18/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
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
6/15
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.
73/100
B
100 mg
CO₂e / view
990.1 KB
Page Weight
70%
Cleaner Than
New Visitor
114 mg
vs
Returning (cached)
57 mg
Annual (10K/mo)
12.0 kg
Emission Segments
Data Center
5 mg
Network
29 mg
Device
66 mg
Resource Breakdown
JavaScript
17.3 KB
Images
895.2 KB
CSS
45.3 KB
HTML
12.9 KB
Other
19.4 KB
Green Hosting Verified
firstcolo
GWF Verified
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

56%Poor
Interactive

HTTPS

No WAF

48d

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+H3

Valid From

20.04.2026

Valid Until

19.07.2026

Subject Alternative Names (2)

stage.petra.dewww.petra.de

SHA-256 Fingerprint

7B:AB:2E:5A:9A:E9:72:E6:A8:3E:84:4D:9C:22:39:9A:8F:E4:44:B7...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
age
7498
alt-svc
h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=864...
cache-control
🟡 5s(max-age=5, public)
content-encoding
⚡ Brotli(br)
content-language
de
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

50

SPF
DKIM
DMARC

MX Records (1)

petra-de.mail.protection.outlook.com

Domain Information

petra.de

Last Updated

12.09.2019

DNSSEC
Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner
Quantcast Choice
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Quantcast Choice
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
66/100
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

Source Sans Pro

WCAG Partial
70/100
Readability
/30
21/30

18px · LH 1.65

Hierarchy
/20
15/20

1.78x ratio · ✓ H1→H6

WCAG
/25
16/25

2.2:1 min contrast

Performance
/25
18/25

1 font · 2 req

Heading Font

Source Sans Pro

Sans32px

Body Font

Source Sans Pro

Sans18px

Contrast Ratio

2.2:1

4 issues

Reading Comfort

Single Font Family

left aligned
32px
h1
20px
h4

✅ Excellent readability: 18px body text is ideal for all devices.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 2.2:1).

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

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

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

Buy on MyFonts

Color Palette

4 unique colors
14.9:1 AAA Light
#ffffff
Background· 86.19999999999999%
#282727
Other· 4.4%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

14 Resources

9
Scripts
5
Styles
6
Async
0
Defer

Top Script Sources

cdn.consentmanager.net(3)local(2)d.delivery.consentmanager.net(2)cp.petra.de(1)delivery.consentmanager.net(1)

Website Identity

Petra

Petra

NewsMediaOrganization

Petra

[email protected]
+49 40 4118825-800
www.petra.de/

Gänsemarkt 21-23, Hamburg

20354, Hamburg

DE

Location detected: 🇩🇪 Germany, Hamburgvia schema_nap
📧 Microsoft 365deEst. 1843

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Last analyzed: 31 May 2026 at 12:10

Historical Analysis & Change Tracking

petra.de Technology Stack - Built With Tailwind CSS, Google Analytics, Google Tag Manager, Matomo | StackOptic | StackOptic