westermann.de

https://westermann.de· First analyzed 28 Apr 2026· Updated 28 Apr 2026

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westermann.de

Mobile

Sponsored

Hosting Provider

Georg Westermann Verlag GmbH & Co.

IP Address

217.13.73.82

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Lengede, Germany

ASN

AS24956

Organization

Georg Westermann Verlag GmbH & Co.

Server

Nginx

Nameservers

ns2.pop-hannover.net.ns.gaertner.de.ns.westermann.de.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.1 s10%

Speed Index

1.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

568 KB

38 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Georg Westermann Verlag GmbH & Co.

Technology Stack

2 Technologies Detected

CSS Frameworks

Tailwind CSS

Web Servers

Nginx

SEO Analysis

C65/100

Meta Tags13/15

Content11/12

Headings3/8

Technical18/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

westermann.dewestermann.de

Bildungsmedien und Services für Lehrkräfte – Westermann

Das Programm der Westermann Gruppe von der Vorschule bis zur Berufsschule.

Title Length55 chars

Recommended: 50-60 chars (~340px / 580px)

Description Length74 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (12/21) — critical for accessibility and SEO

8 issues found

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Crawlability

Sitemap

Type: index

2 URLs

2 sub-sitemaps

robots.txt

76 rules

Sitemap reference found

Local SEO

Local Search Readiness

10/100

Poor

3 12 2

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

Sponsored

AI & LLM Readiness

F36/100

Bot Access

18/25

Machine Read.

9/25

Schema Data

0/25

Citation

9/25

AI Bot Access

12/14 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:16%

Words:1,406

Token eff.:Optimal

Sections/1K:8.5

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary11w

Descriptive Headingsavg 3.7w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

73/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

13/20

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

13/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

7/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 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.

78/100

57 mg

CO₂e / view

567.7 KB

Page Weight

80%

Cleaner Than

New Visitor

66 mg

Returning (cached)

33 mg

Annual (10K/mo)

6.9 kg

Emission Segments

Data Center

3 mg

Network

17 mg

Device

38 mg

Resource Breakdown

JavaScript

149.0 KB

Images

11.0 KB

CSS

287.6 KB

HTML

15.2 KB

Other

104.8 KB

Green Hosting Verified

Gärtner Datensysteme GmbH & Co. KG

GWF Verified

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

76%Good

Interactive

HTTPS

No WAF

61d

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

30.03.2026

Valid Until

28.06.2026

Subject Alternative Names (1)

www.westermann.de

SHA-256 Fingerprint

20:2A:57:1C:B4:79:D9:6D:6D:B0:6A:AD:53:B3:75:51:59:3C:5D:62...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-security-policy

default-src c.wgr.de 'self'; script-src c.wgr.de 'self' 'uns...

content-type

text/html; charset=UTF-8

date

Tue, 28 Apr 2026 18:01:40 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

westermann-de.mail.protection.outlook.com

Domain Information

westermann.de

Last Updated

27.04.2026

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

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.

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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Open Sans

WCAG Partial

59/100

Readability

/30

18/30

16px · LH 1.15

Hierarchy

/20

6/20

WCAG

/25

19/25

3.04:1 min contrast

Performance

/25

16/25

1 font · 4 req

Heading Font

Open Sans

Sans

Body Font

Open Sans

Sans16px

Contrast Ratio

3.04:1

1 issue

Reading Comfort

~35 CPL

Narrow lines

24px

19px

18px

16px

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

⚠️ Tight line spacing (1.15). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 6/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 3.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

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

Buy on MyFontsFlesch 6

Color Palette

7 unique colors

2.14:1 Fail Light

#b1b1b1

Other· 34.900000000000006%

#ffffff

Background· 19%

#4c8388

Primary· 21.2%

#1d79a5

Accent· 7.2%

#436178

Secondary· 6.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)l.ecn-ldr.de(1)

Website Identity

westermann.de

+4953112325125

Location detected: 🇩🇪 Germanyvia phone

📧 Microsoft 365de

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Last analyzed: 28 Apr 2026 at 18:01

Historical Analysis & Change Tracking