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computerwissen.de

https://computerwissen.de· First analyzed 24 May 2026· Updated 24 May 2026
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computerwissen.de
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Mobile

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Hosting Provider

Hetzner
hetzner.com

IP Address

178.63.35.25

Site Location

🇩🇪 Germanyvia schema_nap

Server Location

🇩🇪 Falkenstein, Germany

ASN

AS24940

Organization

Constructiva Solutions GmbH

Server

Apache

Nameservers

c.ns14.net.b.ns14.net.d.ns14.net.a.ns14.net.

Performance

90

Core Web Vitals

Weight

First Contentful Paint
1.5 s10%
Speed Index
1.9 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.3 MB
66 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
TYPO3

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

4 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

SEO Analysis

B75/100
22
5
1
Meta Tags9/15
Content11/12
Headings6/8
Technical24/25
E-E-A-T2/7
Images5/7
Links5/5
URL5/5
Social2/5
Freshness0/4
Mobile3/4
Indexability3/3
C
computerwissen.decomputerwissen.de

computerwissen.de - Leicht verständliche Computer-Tipps und Problem...

Das Portal für leichtverständliche Tipps und Tricks zu Windows, Software, Internet und Netzwerk, Sicherheit, Smartphone, Hardware, Apple und Linux.

Title truncated.
Title Length88 chars

Recommended: 50-60 chars (~537px / 580px)

Description Length147 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (88 chars, ~537px). Will be truncated in search results.

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

9 URLs

9 sub-sitemaps

robots.txt

5 rules

Sitemap reference found

Local SEO

Local Search Readiness

29/100
Needs Work
8 12

Sponsored

AI & LLM Readiness

D40/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
2/25
Citation
9/25

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
nav
Text ratio:10%
Words:2,394
Token eff.:Optimal
Depth:1/5

Structured Data

2 JSON-LD
Organization×1.1

Citation Readiness

Opening Summary741w
Descriptive Headings
Canonical URL
Open Graph1/3
Twitter Card1/3
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.
B
74/100
14
Passed
2
Critical
3
Warnings
Images & Alt Text
18/20
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
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
11/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
5/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 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.
75/100
B
135 mg
CO₂e / view
1.3 MB
Page Weight
70%
Cleaner Than
New Visitor
154 mg
vs
Returning (cached)
77 mg
Annual (10K/mo)
16.2 kg
Emission Segments
Data Center
7 mg
Network
40 mg
Device
89 mg
Resource Breakdown
JavaScript
86.3 KB
Images
948.6 KB
CSS
110.3 KB
Fonts
161.6 KB
HTML
28.9 KB
Green Hosting Verified
Hetzner Online GmbH
GWF Verified
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

31%Critical
Interactive

HTTPS

No WAF

77d

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

12.05.2026

Valid Until

10.08.2026

Subject Alternative Names (2)

computerwissen.dewww.computerwissen.de

SHA-256 Fingerprint

AE:E8:72:FD:BF:02:98:A0:02:6C:B2:60:D5:E9:50:24:5D:B5:EB:5F...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
cache-control
🟡 3 Hours(max-age=13658)
content-encoding
📦 Gzip(gzip)
content-language
de
content-length
29337
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (4)

mx03.hornetsecurity.com
mx01.hornetsecurity.com
mx02.hornetsecurity.com
mx04.hornetsecurity.com

Domain Information

computerwissen.de

Last Updated

13.12.2023

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked
Data Protection Officer mentioned

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.
B
71/100
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, viewport-fit=cover
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Merriweather + Open Sans

WCAG Partial
64/100
Readability
/30
14/30

12px · LH 1.50

Hierarchy
/20
17/20

4x ratio · ✓ H1→H6

WCAG
/25
17/25

1.89:1 min contrast

Performance
/25
16/25

2 fonts · 15 req

Heading Font

Merriweather

Serif48px

Body Font

Open Sans

Sans12px

Contrast Ratio

1.89:1

20 issues

Reading Comfort

~103 CPL

Too wide
48px
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).

❌ Very long lines: ~103 chars/line causes eye strain. Add max-width constraint.

❌ Very complex text: Flesch score 22/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 20 elements below WCAG AA threshold (min 1.9:1).

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

Buy on MyFontsFlesch 22

Color Palette

9 unique colors
3.54:1 AA Large Light
#ffffff
Background· 68.10000000000001%
#8e8780
Other· 3.1%
#f5ad01
Primary· 11.799999999999999%
#e3e4d9
Secondary· 3.4%
#e0b140
Accent· 3.2%
#d8c58a
Secondary· 1.9%
#f5da8e
Accent· 1.7%
#e8aa21
Accent· 1.2%

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

13 Resources

10
Scripts
3
Styles
6
Async
3
Defer

Top Script Sources

local(3)cloud.ccm19.de(2)unpkg.com(2)ads.bwr-media.de(2)static.vnr-nss.de(1)

Website Identity

computerwissen.de

computerwissen.de

Organization
kundenservice@vnr.de
+49 - (0)228 - 95 50 100
www.computerwissen.de/

Theodor-Heuss-Straße 2-4

D-53177 Bonn

de

Location detected: 🇩🇪 Germanyvia schema_nap
de-DE

Social Profiles

FacebookX (Twitter)

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Last analyzed: 24 May 2026 at 18:31

Historical Analysis & Change Tracking