StackOptic
Back to Search
kopp-verlag.de favicon

kopp-verlag.de

https://kopp-verlag.de· First analyzed 28 Apr 2026· Updated 28 Apr 2026
Export
kopp-verlag.de
Desktop screenshot of kopp-verlag.de
Mobile screenshot of kopp-verlag.de
Mobile

Sponsored

Hosting Provider

Websale AG

IP Address

185.38.119.221

Site Location

🇩🇪 Rottenburg a. N., Germanyvia schema_nap

Server Location

🇩🇪 Nuremberg, Germany

ASN

AS62297

Organization

Websale AG

Server

Nginx

Nameservers

ns2.pns.de.ns3.pns.de.ns4.pns.de.ns1.pns.de.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
741 ms10%
Speed Index
963 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2 MB
109 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
Websale AG

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

14 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
FullStory

Advertising

3
Microsoft AdvertisingTaboolaOutbrain

CSS Frameworks

2
Tailwind CSS
Chakra UI

Frameworks

1
Alpine.js

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

Customer Support

1
Zendesk

SEO Analysis

B71/100
23
6
1
Meta Tags14/15
Content10/12
Headings0/8
Technical23/25
E-E-A-T2/7
Images5/7
Links4/5
URL5/5
Social3/5
Freshness0/4
Mobile2/4
Indexability3/3
K
kopp-verlag.dekopp-verlag.de

Kopp - portofrei bestellen bei Kopp-verlag.de

Kopp Verlag Shop ✔ Über 17 Mio. Artikel ✔ Brisante Bücher, Wohlbefinden & Gesundheit, Outdoor & Survival. ✔ Portofrei in der EU

Title Length45 chars

Recommended: 50-60 chars (~265px / 580px)

Description Length127 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: index

2 URLs

2 sub-sitemaps

robots.txt

9 rules

Sitemap reference found

Local SEO

Local Search Readiness

49/100
Fair
13 9

Sponsored

AI & LLM Readiness

D46/100
Bot Access
20/25
Machine Read.
8/25
Schema Data
7/25
Citation
11/25

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.txtinvalid
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:2%
Words:3,612
Token eff.:Poor Structure

Structured Data

2 JSON-LD
Organization×1.1WebSiteSearchAction
sameAs entity links

Citation Readiness

Opening Summary132w
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 (10)
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.
D
52/100
7
Passed
7
Critical
1
Warnings
Images & Alt Text
13/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
10/20
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
3/15
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.
4 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.
36/100
D
248 mg
CO₂e / view
2.0 MB
Page Weight
50%
Cleaner Than
New Visitor
283 mg
vs
Returning (cached)
142 mg
Annual (10K/mo)
29.7 kg
Emission Segments
Data Center
55 mg
Network
59 mg
Device
133 mg
Resource Breakdown
JavaScript
269.9 KB
Images
1.2 MB
CSS
188.6 KB
Fonts
178.2 KB
HTML
82.6 KB
Other
19.8 KB
Green Hosting Not Verified
Websale AG
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

65%Fair
Critical / Transactional

HTTPS

No WAF

77d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

16.04.2026

Valid Until

15.07.2026

Subject Alternative Names (2)

kopp-verlag.dewww.kopp-verlag.de

SHA-256 Fingerprint

6E:D2:2D:B2:E5:F3:2A:FB:6A:B8:42:12:EB:21:C0:30:9A:26:F3:F7...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-cache)
content-encoding
📦 Gzip(gzip)
content-security-policy
frame-ancestors 'self';
content-type
text/html; charset=ISO-8859-1
date
Tue, 28 Apr 2026 16:15:02 GMT
pragma
no-cache
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

95

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

koppverlag-de01b.mail.protection.outlook.com

Domain Information

kopp-verlag.de

Last Updated

21.07.2022

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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.
A+
91/100
Mobile Friendly26 breakpoints
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

Typography & Readability

Roboto Condensed + Roboto

WCAG AA
69/100
Readability
/30
19/30

12px · LH 1.50

Hierarchy
/20
14/20

2.5x ratio

WCAG
/25
18/25

5.05:1 min contrast

Performance
/25
18/25

System fonts

Heading Font

Roboto Condensed

Sans30px

Body Font

Roboto

Sans12px

Contrast Ratio

5.05:1

WCAG AA (≥4.5:1)

Reading Comfort

~47 CPL

Optimal (45–75)
30px
h1
12px
p

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

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

✅ Optimal line length: ~47 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 34/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.0:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

Buy on MyFontsFlesch 34

Color Palette

9 unique colors
Light
#7f7f7f
Other· 30.000000000000004%
#f1f2f4
Background· 20.1%
#337ab7
Primary· 0%
#221f0d
Secondary· 10.5%
#544b37
Secondary· 10.5%
#413223
Secondary· 9.9%
#6f6152
Secondary· 6.3%
#6c1217
Accent· 5.2%

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Advertising

2
Microsoft AdsEnterprise
TaboolaMid-Market

Ad platforms and retargeting pixels

Affiliate & Partnerships

1
AWINMid-Market

Affiliate networks and partner tracking

3

Categories

5

Total Tools

1

Enterprise

2

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

Sponsored

Scripts & Styles

23 Resources

20
Scripts
3
Styles
8
Async
3
Defer

Top Script Sources

..(4)googletagmanager.com(3)static.scarabresearch.com(2)bat.bing.com(2)google-analytics.com(1)

Website Identity

Kopp Verlag e.K.

Kopp Verlag e.K.

Organization
info@kopp-verlag.de
07472980610
www.kopp-verlag.de

Bertha-Benz-Str. 10, Rottenburg a. N.

72108, Rottenburg a. N.

DE

Location detected: 🇩🇪 Germany, Rottenburg a. N.via schema_nap
📧 Microsoft 365de

Social Profiles

Facebook

Sponsored

Last analyzed: 28 Apr 2026 at 16:15

Historical Analysis & Change Tracking