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diercke.de

https://diercke.de· First analyzed 28 May 2026· Updated 28 May 2026
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diercke.de
Desktop screenshot of diercke.de
Mobile screenshot of diercke.de
Mobile

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Hosting Provider

Georg Westermann Verlag GmbH & Co.

IP Address

217.13.73.89

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Lengede, Germany

ASN

AS24956

Organization

Georg Westermann Verlag GmbH & Co.

Server

Nginx

CDN

Varnish

Nameservers

ns1.hosting.de.ns3.hosting.de.ns2.hosting.de.

Performance

95

Core Web Vitals

Weight

First Contentful Paint
1.2 s10%
Speed Index
1.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
22.1 MB
64 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Technology Stack

4 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Analytics

1
Matomo

Web Servers

1
Nginx

SEO Analysis

C69/100
20
5
1
Meta Tags10/15
Content12/12
Headings8/8
Technical18/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
D
diercke.dediercke.de

Diercke Weltatlas - Karten, Infos, Materialien | Diercke.de

No description available for this page.

Title Length59 chars

Recommended: 50-60 chars (~345px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

2 sub-sitemaps

robots.txt

47 rules

Sitemap reference found

Local SEO

Local Search Readiness

12/100
Poor
4 11 2

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

Sponsored

AI & LLM Readiness

D43/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
0/25
Citation
10/25

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
navheader/footer
Text ratio:7%
Words:950
Token eff.:Optimal
Sections/1K:10.5
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary33w
Descriptive Headingsavg 2.1w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
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.
B
79/100
12
Passed
2
Critical
1
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
5/15
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.
33/100
F
2.29 g
CO₂e / view
22.1 MB
Page Weight
5%
Cleaner Than
New Visitor
2.62 g
vs
Returning (cached)
1.31 g
Annual (10K/mo)
274.8 kg
Emission Segments
Data Center
112 mg
Network
673 mg
Device
1.50 g
Resource Breakdown
JavaScript
213.2 KB
Images
20.7 MB
CSS
1.2 MB
HTML
15.3 KB
Green Hosting Verified
Gärtner Datensysteme GmbH & Co. KG
GWF Verified
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

56%Poor
Interactive

HTTPS

No WAF

56d

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

24.04.2026

Valid Until

23.07.2026

Subject Alternative Names (1)

diercke.de

SHA-256 Fingerprint

D9:3D:E6:D8:3F:7E:53:48:C1:AE:DA:0B:13:A5:1E:9F:0D:2D:2C:A0...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

age
491
cache-control
🟡 900s(max-age=900, public)
content-encoding
📦 Gzip(gzip)
content-language
de
content-type
text/html; charset=UTF-8
date
Thu, 28 May 2026 07:43:24 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

98

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

diercke-de.mail.protection.outlook.com

Domain Information

diercke.de

Last Updated

24.09.2020

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
63/100
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

Open Sans

WCAG Partial
67/100
Readability
/30
25/30

18px · LH 1.60

Hierarchy
/20
16/20

3.56x ratio · ✓ H1→H6

WCAG
/25
15/25

1:1 min contrast

Performance
/25
11/25

1 font · 8 req

Heading Font

Open Sans

Sans64px

Body Font

Open Sans

Sans18px

Contrast Ratio

1:1

10 issues

Reading Comfort

~34 CPL

Narrow lines
64px
h1
40px
h2
40px
h3
18px
h4
18px
p

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

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 8/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 10 elements below WCAG AA threshold (min 1.0:1).

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

✅ Strong hierarchy: Headlines are 3.6x larger than body text.

Buy on MyFontsFluid TypeFlesch 8

Color Palette

9 unique colors
Light
#86856f
Secondary· 10.7%
#58859e
Secondary· 28.9%
#eef1f8
Background· 18.3%
#102666
Primary· 10.6%
#6e93a8
Secondary· 9.6%
#5d6b76
Secondary· 6.2%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Matomo (Piwik)Mid-Market
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

5 Resources

3
Scripts
2
Styles
1
Async
0
Defer

Top Script Sources

local(2)track.westermann.de(1)

Website Identity

diercke.de

[email protected]
+4953112325125
Location detected: 🇩🇪 Germanyvia phone
📧 Microsoft 365de

Social Profiles

FacebookInstagram

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Last analyzed: 28 May 2026 at 07:43

Historical Analysis & Change Tracking

diercke.de Technology Stack - Built With Tailwind CSS, Font Awesome, Matomo, Nginx | StackOptic | StackOptic