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robinwieruch.de

https://robinwieruch.de· First analyzed 12 May 2026· Updated 12 May 2026
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robinwieruch.de
Desktop screenshot of robinwieruch.de
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Mobile

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Hosting Provider

Hetzner
hetzner.com

IP Address

178.156.216.6

Site Location

🇩🇪 Germanyvia tld

Server Location

🇺🇸 Ashburn, United States

ASN

AS213230

Organization

HETZNER-DC

Server

Nginx

Nameservers

dns2.registrar-servers.com.dns1.registrar-servers.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
457 ms10%
Speed Index
594 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
25 KB
7 requests
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Astro
Styling
Tailwind CSS
CMS
Substack
Infrastructure
Hosting
Hetzner

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

5 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Meta Frameworks

1
Astro

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginxv1.29.8

SEO Analysis

B75/100
25
1
1
Meta Tags8/15
Content10/12
Headings8/8
Technical20/25
E-E-A-T7/7
Images0/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
R
robinwieruch.derobinwieruch.de

Robin Wieruch - Freelance Full-Stack Software Engineer for AI and P...

Freelance Full-Stack Software Engineer specializing in AI, React, Next.js, and TypeScript. Available for remote hire as Technical Lead, Architect, or Product...

Title truncated. Description truncated.
Title Length73 chars

Recommended: 50-60 chars (~442px / 580px)

Description Length193 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (73 chars, ~442px). Will be truncated in search results.

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

9/100
Poor
3 13 1

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

Sponsored

AI & LLM Readiness

C61/100
Bot Access
20/25
Machine Read.
14/25
Schema Data
10/25
Citation
17/25

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
blockquotesnavheader/footer
Text ratio:10%
Words:506
Token eff.:Optimal
Sections/1K:27.7
Depth:3/5

Structured Data

1 JSON-LD
Person×1.3Organization×1.1WebSiteSearchAction
sameAs entity links

Citation Readiness

Opening Summary41w
Descriptive Headingsavg 2.8w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (5)
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.
A
85/100
13
Passed
1
Critical
0
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
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.
1 recommendation
  • •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.
82/100
A+
3 mg
CO₂e / view
24.7 KB
Page Weight
95%
Cleaner Than
New Visitor
3 mg
vs
Returning (cached)
1 mg
Annual (10K/mo)
300 g
Emission Segments
Data Center
<0.001 g
Network
<0.001 g
Device
2 mg
Resource Breakdown
JavaScript
6.4 KB
Images
630 B
CSS
8.0 KB
HTML
9.6 KB
Green Hosting Verified
Hetzner
Provider Match
1 recommendation
  • •Carbon footprint recommendation preview...
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B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

89d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

11.05.2026

Valid Until

09.08.2026

Subject Alternative Names (1)

www.robinwieruch.de

SHA-256 Fingerprint

11:72:AF:22:AF:8C:65:78:35:47:46:B3:5A:33:F8:5B:75:0D:04:C6...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=2592000
content-encoding
📦 Gzip(gzip)
content-type
text/html
date
Tue, 12 May 2026 16:28:09 GMT
etag
"69fcb325-8efd"
last-modified
Thu, 07 May 2026 15:43:33 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

0

SPF
DKIM
DMARC

Domain Information

robinwieruch.de

Last Updated

11.03.2026

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

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
69/100
Mobile Friendly
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
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial
77/100
Readability
/30
21/30

14px · LH 1.43

Hierarchy
/20
18/20

3.43x ratio · ✓ H1→H6

WCAG
/25
16/25

3.09:1 min contrast

Performance
/25
22/25

System fonts

Heading Font

-apple-system

Sans48px

Body Font

-apple-system

Sans14px

Contrast Ratio

3.09:1

21 issues

Reading Comfort

~36 CPL

Narrow lines
48px
h1
36px
h2
30px
h3
14px
p

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 29/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 21 elements below WCAG AA threshold (min 3.1:1).

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

✅ Strong hierarchy: Headlines are 3.4x larger than body text.

Flesch 29

Color Palette

2 unique colors
Light
#ffffff
Background· 92.60000000000001%
#509bc2
Primary· 7.4%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

4 Resources

3
Scripts
1
Styles
1
Async
0
Defer

Top Script Sources

local(2)googletagmanager.com(1)

Website Identity

Robin Wieruch

Robin Wieruch - Freelance Full-Stack Software Engineer for AI and Product. Based in Berlin, Germany.

hello@rwieruch.com
www.robinwieruch.de
Location detected: 🇩🇪 Germanyvia tld
en

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Last analyzed: 12 May 2026 at 16:28

Historical Analysis & Change Tracking