SCAN COMPLETE
www.konradvoelkel.com
🔥 Website Scan · Score 100/100
Scanned on
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100
/100
Damn. You didn't need us.
Load Time
1.02s
HTML Size
303KB
Scripts
0
external
Images
8
Links
0
ux
100
/100
aeo
29
/100
geo
91
/100
seo
100
/100
ssl
100
/100
sxo
60
/100
llmo
100
/100
trust
100
/100
images
52
/100
mobile
100
/100
schema
100
/100
privacy
100
/100
security
100
/100
thirdParty
100
/100
performance
100
/100
seoEssentials
90
/100
performanceDeep
100
/100
The Roast 🔥
🔥
Sixteen years of blogging about maths and software and still no alt text, but sure,…
🌍
No CDN detected. Users in Australia are still waiting for your site to load.
📸
7 images without alt text. SEO and accessibility? Never heard of them.
The Fix 🛠️
Add alt text to all images
Unlock the full fix
You can see what's wrong for free. The step-by-step fixes, the copy-paste code, and the AI fix prompt for this site are one credit. No subscription.
Unlock the full fix (1 credit)Tech Stack 💻
Security Analysis 🔒
Security Grade
A
Security Score
100/100
Social Media 📱
Social Sharing Score
100/100
Status
✅ Good
✅
OG Title
✅
OG Description
✅
OG Image
✅
Twitter Card
Image Optimization 🖼️
Total Images
8
Missing Alt
7
Unoptimized
6
Score
52/100
WebP
0
PNG
6
JPG
2
GIF
0
SVG
0
Other
0
SSL/TLS Security 🔐
HTTPS
✅
Mixed Content
✅
HTTP Redirect
✅
Grade
A
SEO Essentials 🎯
✅
Sitemap
✅
Robots.txt
✅
Canonical
✅
Meta Desc
Title Length
81 chars
H1 Count
1
SEO Score
90/100
Structured Data 📊
Has Schema
✅
Items Found
6
Score
100/100
Types:
WebSitePersonWebPageBookLearningResourceBookLearningResourceBookLearningResource
Performance Deep Dive ⚡
Compression
gzip
Caching
✅
Total Resources
8
Score
100/100
Scripts: 0 | Styles: 0 | Images: 8
Third-Party Scripts 📦
Total Scripts
0
Tracking
0
Score
100/100
Mobile Responsiveness 📱
Viewport Tag
✅
Responsive
✅
Touch Friendly
✅
Score
100/100
Privacy & GDPR 🛡️
Cookie Notice
❌
Privacy Policy
✅
Cookie Scripts
0
Compliance Score
100/100
AI Search Readiness 🤖
Can ChatGPT, Perplexity and Google AI Overviews read and cite this site? Four scored pillars, all measured from the page.
GEO91/100
Generative Engine Optimization - can AI crawlers read you
- ✓Content in server HTML - The page delivers ~186 words of readable content in the HTML.
- ✓AI crawlers not blocked - robots.txt does not block the major AI crawlers.
- ✓Valid structured data - 1 valid JSON-LD block(s) with real @types.
- ✓Named entity types - Declares types: website, person, webpage, book,learningresource.
- ✕llms.txt present - No /llms.txt. Add one to guide AI crawlers to your best content.
AEO29/100
Answer Engine Optimization - can AI lift a direct answer
- ✕Answerable summary up top - No substantive lead paragraph. Put a direct, quotable answer near the top.
- ✕FAQ / Q&A structure - No FAQ or Q&A blocks. Add them - AI loves lifting question/answer pairs.
- ✓Clean heading hierarchy - One H1 and 1 H2 section(s).
LLMO100/100
LLM Optimization - is your brand/entity unambiguous
- ✓Organization / Person schema - Declares an Organization/Person entity.
- ✓sameAs links - Uses sameAs to link your social/knowledge profiles.
- ✓Title / H1 coherence - Title and H1 share the core topic word.
- ✓Meta description present - Has a real meta description.
SXO60/100
Search Experience Optimization - does the click land well
- ✕Enough content to satisfy intent - Only ~186 words. Thin pages rarely satisfy the question that sent the visitor.
- ✓Clear primary action - A clear call-to-action is present.
- ✓Mobile viewport - Has a mobile viewport meta tag.
💰 WEBSITE VALUE & ROI ANALYSIS
ESTIMATED WEBSITE VALUE
$203,443
per year
FIX COST (AGENCY)
$900
~6h of work
YOUR SAVINGS
$899
vs hiring an agency
✓ You save $899 vs hiring an agency to find and fix this
📈 TRAFFIC IMPACT ANALYSIS
Current Monthly Traffic
33,517
Value: $83,793/month
Potential After Fixes
33,517
+0 visitors (0% increase)
Monthly Revenue Impact:$0
🎯 KEYWORD PORTFOLIO VALUE
Total Monthly Searches
1,117,248
Monthly Keyword Value
$16,954
Average CPC
$0.51
Top Value Keywords:
topics
11,200 searches/mo · $1.00 CPC
$336/mo
software
15,360 searches/mo · $0.50 CPC
$230/mo
science
12,800 searches/mo · $0.50 CPC
$192/mo
data
12,800 searches/mo · $0.50 CPC
$192/mo
konrad
12,800 searches/mo · $0.50 CPC
$192/mo
💎 DOMAIN ASSET VALUE
Estimated Domain Value
$1,350
TLD Premium
.com (1.5x)
Brandability
10/10
Value Factors:
Premium .com TLD (+50%)Highly brandableClean, professional name
Market Estimate:
$945 - $2,025 (based on domain metrics)
✍️ CONTENT PORTFOLIO VALUE
Total Content Value
$8,190
Estimated Word Count
42,000
Quality Score
10/10
Professional Writing Cost
$6,300
@ $0.15/word
SEO Optimization Premium
+$1,890
Content Breakdown:
Homepage & Core Pages (8)$720
Blog Posts & Articles (30)$5,400
🎨 DESIGN & UX VALUE
Total Design Value
$125,000
Design Type
custom
25x multiplier
UX Quality Score
10/10
Professional Design Cost
$125,000
Brand Assets:
✓Custom Logo
✓Color System
✓Typography System
✓Component Library
Design Factors:
Custom professional designMobile-optimized responsive designCustom logo and brandingProfessional color systemTypography systemHigh-quality UX design
Responsive Design:✓ Yes
🔧 FIX COST BREAKDOWN
1 Critical Issues
~3h @ $150/hr
$450
2 Warning Issues
~3h @ $150/hr
$450
Total Agency Cost
Developer: $600
$900
RoastWeb:from $1 per scan
Estimates based on industry averages and website analysis. Actual values may vary based on your specific market, competition, content depth, and implementation quality.
Keyword Research & Targeting 🎯
🔑 Primary Keywords Detected
Keywords extracted from your page content with live search metrics from DataForSEO
| Keyword | Monthly Volume | Difficulty | CPC | Opportunity |
|---|---|---|---|---|
| teaches data science hhu | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| data science hhu sseldorf | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| konrad teaches data science | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| konrad lkel teaches data | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| lkel teaches data science | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| science hhu sseldorf mathematician | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| hhu sseldorf mathematician training | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| sseldorf mathematician training blogging | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| mathematician training blogging maths | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| teaches data science | 1,920 | 35/100 | $0.50 | HIGH |
| data science hhu | 1,920 | 35/100 | $0.50 | HIGH |
| science hhu sseldorf | 1,920 | 35/100 | $0.50 | HIGH |
| konrad teaches data | 1,920 | 35/100 | $0.50 | HIGH |
| konrad lkel teaches | 1,920 | 35/100 | $0.50 | HIGH |
| lkel teaches data | 1,920 | 35/100 | $0.50 | HIGH |
| hhu sseldorf mathematician | 1,920 | 35/100 | $0.50 | HIGH |
| sseldorf mathematician training | 1,920 | 35/100 | $0.50 | HIGH |
| mathematician training blogging | 1,920 | 35/100 | $0.50 | HIGH |
| training blogging maths | 1,920 | 35/100 | $0.50 | HIGH |
| software | 15,360 | 85/100 | $0.50 | MEDIUM |
| science | 12,800 | 65/100 | $0.50 | MEDIUM |
| data | 12,800 | 65/100 | $0.50 | MEDIUM |
| konrad | 12,800 | 65/100 | $0.50 | MEDIUM |
| hhu | 12,800 | 65/100 | $0.50 | MEDIUM |
| sseldorf | 12,800 | 65/100 | $0.50 | MEDIUM |
| teaches | 12,800 | 65/100 | $0.50 | MEDIUM |
| thesisgithub | 12,800 | 65/100 | $0.50 | MEDIUM |
| learning | 12,800 | 65/100 | $0.50 | MEDIUM |
| lkel | 12,800 | 65/100 | $0.50 | MEDIUM |
| mathematician | 12,800 | 65/100 | $0.50 | MEDIUM |
| python | 12,800 | 65/100 | $0.50 | MEDIUM |
| script | 12,800 | 65/100 | $0.50 | MEDIUM |
| posts | 12,800 | 65/100 | $0.50 | MEDIUM |
| training | 12,800 | 65/100 | $0.50 | MEDIUM |
| blogging | 12,800 | 65/100 | $0.50 | MEDIUM |
| maths | 12,800 | 65/100 | $0.50 | MEDIUM |
| since | 12,800 | 65/100 | $0.50 | MEDIUM |
| 2009 | 12,800 | 65/100 | $0.50 | MEDIUM |
| machine | 12,800 | 65/100 | $0.50 | MEDIUM |
| intro | 12,800 | 65/100 | $0.50 | MEDIUM |
| deep | 12,800 | 65/100 | $0.50 | MEDIUM |
| master | 12,800 | 65/100 | $0.50 | MEDIUM |
| questions | 12,800 | 65/100 | $0.50 | MEDIUM |
| phd | 12,800 | 65/100 | $0.50 | MEDIUM |
| lecture | 12,800 | 65/100 | $0.50 | MEDIUM |
| selected | 12,800 | 65/100 | $0.50 | MEDIUM |
| skip | 12,800 | 65/100 | $0.50 | MEDIUM |
| thesisgithubkonrad | 12,800 | 65/100 | $0.50 | MEDIUM |
| lkelteachingprojectsblogcontactdeutschkonrad | 12,800 | 65/100 | $0.50 | MEDIUM |
| academic | 12,800 | 65/100 | $0.50 | MEDIUM |
| teacher | 12,800 | 65/100 | $0.50 | MEDIUM |
| dialog | 12,800 | 65/100 | $0.50 | MEDIUM |
| systems | 12,800 | 65/100 | $0.50 | MEDIUM |
| group | 12,800 | 65/100 | $0.50 | MEDIUM |
| heinrich | 12,800 | 65/100 | $0.50 | MEDIUM |
| heine | 12,800 | 65/100 | $0.50 | MEDIUM |
| university | 12,800 | 65/100 | $0.50 | MEDIUM |
| many | 12,800 | 65/100 | $0.50 | MEDIUM |
| computer | 12,800 | 65/100 | $0.50 | MEDIUM |
| students | 12,800 | 65/100 | $0.50 | MEDIUM |
| meet | 12,800 | 65/100 | $0.50 | MEDIUM |
| mandatory | 12,800 | 65/100 | $0.50 | MEDIUM |
| course | 12,800 | 65/100 | $0.50 | MEDIUM |
| supervises | 12,800 | 65/100 | $0.50 | MEDIUM |
| bachelor | 12,800 | 65/100 | $0.50 | MEDIUM |
| theses | 12,800 | 65/100 | $0.50 | MEDIUM |
| variety | 12,800 | 65/100 | $0.50 | MEDIUM |
| one | 12,800 | 65/100 | $0.50 | MEDIUM |
| became | 12,800 | 65/100 | $0.50 | MEDIUM |
| hainrich | 12,800 | 65/100 | $0.50 | MEDIUM |
| tiny | 12,800 | 65/100 | $0.50 | MEDIUM |
| chatbot | 12,800 | 65/100 | $0.50 | MEDIUM |
| answers | 12,800 | 65/100 | $0.50 | MEDIUM |
| without | 12,800 | 65/100 | $0.50 | MEDIUM |
| hallucinating | 12,800 | 65/100 | $0.50 | MEDIUM |
| freiburg | 12,800 | 65/100 | $0.50 | MEDIUM |
| topics | 11,200 | 90/100 | $1.00 | MEDIUM |
| maths software | 5,760 | 70/100 | $0.50 | MEDIUM |
| software since | 5,760 | 70/100 | $0.50 | MEDIUM |
| data science | 4,800 | 50/100 | $0.50 | MEDIUM |
| teaches data | 4,800 | 50/100 | $0.50 | MEDIUM |
| science hhu | 4,800 | 50/100 | $0.50 | MEDIUM |
| hhu sseldorf | 4,800 | 50/100 | $0.50 | MEDIUM |
| konrad lkel | 4,800 | 50/100 | $0.50 | MEDIUM |
| konrad teaches | 4,800 | 50/100 | $0.50 | MEDIUM |
| lkel teaches | 4,800 | 50/100 | $0.50 | MEDIUM |
| sseldorf mathematician | 4,800 | 50/100 | $0.50 | MEDIUM |
| mathematician training | 4,800 | 50/100 | $0.50 | MEDIUM |
| training blogging | 4,800 | 50/100 | $0.50 | MEDIUM |
| blogging maths | 4,800 | 50/100 | $0.50 | MEDIUM |
| since 2009 | 4,800 | 50/100 | $0.50 | MEDIUM |
| machine learning | 4,800 | 50/100 | $0.50 | MEDIUM |
| deep learning | 4,800 | 50/100 | $0.50 | MEDIUM |
| selected posts | 4,800 | 50/100 | $0.50 | MEDIUM |
| blogging maths software | 2,304 | 55/100 | $0.50 | MEDIUM |
| maths software since | 2,304 | 55/100 | $0.50 | MEDIUM |
| software since 2009 | 2,304 | 55/100 | $0.50 | MEDIUM |
| training blogging maths software | 768 | 40/100 | $0.50 | MEDIUM |
| blogging maths software since | 768 | 40/100 | $0.50 | MEDIUM |
| maths software since 2009 | 768 | 40/100 | $0.50 | MEDIUM |
🤖 AI-Suggested Keyword OpportunitiesAI-POWERED
Related keywords you should target but aren't currently using - suggested by Claude AI
| Suggested Keyword | Monthly Volume | Difficulty | CPC | Opportunity |
|---|---|---|---|---|
| → how to learn data science | 1,152 | 15/100 | $0.50 | 🎯 EASY WIN |
| → online data science courses | 768 | 28/100 | $0.50 | 🎯 EASY WIN |
| → data science course Düsseldorf | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → learn data science Germany | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → data science university Düsseldorf | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → Python data science tutorial | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → introduction to data science | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → data science for beginners | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → machine learning course HHU | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → data science degree programs | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → mathematics and data science | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → dialog systems machine learning | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → Python for data analysis | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → university data science programs | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → academic teaching data science | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → mathematics for machine learning | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → linear algebra machine learning | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → data science career path | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → open source data science | 640 | 20/100 | $0.50 | 🎯 EASY WIN |
| → bias in machine learning | 512 | 10/100 | $0.50 | 🎯 EASY WIN |
| → deep learning introduction | 1,920 | 35/100 | $0.50 | HIGH |
| → data science bootcamp | 1,920 | 35/100 | $0.50 | HIGH |
| → data science certification | 1,920 | 35/100 | $0.50 | HIGH |
| → data science fundamentals | 1,920 | 35/100 | $0.50 | HIGH |
| → applied data science | 1,920 | 47/100 | $0.50 | HIGH |
| → data science projects | 1,920 | 35/100 | $0.50 | HIGH |
| → data science blog | 1,920 | 35/100 | $0.50 | HIGH |
| → data science career | 1,920 | 35/100 | $0.50 | HIGH |
| → data science skills | 1,920 | 35/100 | $0.50 | HIGH |
| → data science tools | 1,920 | 35/100 | $0.50 | HIGH |
| → data science methodology | 1,920 | 35/100 | $0.50 | HIGH |
| → data analysis techniques | 1,920 | 47/100 | $0.50 | HIGH |
| → Python programming course | 1,920 | 35/100 | $0.50 | HIGH |
| → machine learning basics | 1,920 | 35/100 | $0.50 | HIGH |
| → deep learning fundamentals | 1,920 | 35/100 | $0.50 | HIGH |
| → computer science education | 1,920 | 35/100 | $0.50 | HIGH |
| → data science research | 1,920 | 35/100 | $0.50 | HIGH |
| → data science applications | 1,920 | 47/100 | $0.50 | HIGH |
| → big data analytics | 1,920 | 35/100 | $0.50 | HIGH |
| → exploratory data analysis | 1,920 | 35/100 | $0.50 | HIGH |
| → natural language processing | 1,920 | 35/100 | $0.50 | HIGH |
| → data cleaning techniques | 1,920 | 47/100 | $0.50 | HIGH |
| → data science workflow | 1,920 | 35/100 | $0.50 | HIGH |
| → data science pipeline | 1,920 | 35/100 | $0.50 | HIGH |
| → professor data science | 1,920 | 35/100 | $0.50 | HIGH |
| → data science instructor | 1,920 | 35/100 | $0.50 | HIGH |
| → data science mentor | 1,920 | 35/100 | $0.50 | HIGH |
| → data science consultation | 1,920 | 35/100 | $0.50 | HIGH |
| → convolutional neural networks | 1,920 | 35/100 | $0.50 | HIGH |
| → recurrent neural networks | 1,920 | 35/100 | $0.50 | HIGH |
| → data science trends | 1,920 | 35/100 | $0.50 | HIGH |
| → data science mistakes | 1,920 | 35/100 | $0.50 | HIGH |
| → data science ethics | 1,920 | 35/100 | $0.50 | HIGH |
| → data scientist skills | 1,920 | 35/100 | $0.50 | HIGH |
| → data science portfolio | 1,920 | 35/100 | $0.50 | HIGH |
| → data science interview | 1,920 | 35/100 | $0.50 | HIGH |
| → data science tips | 1,920 | 35/100 | $0.50 | HIGH |
| → data science resources | 1,920 | 35/100 | $0.50 | HIGH |
| → data science communities | 1,920 | 35/100 | $0.50 | HIGH |
| → data science conferences | 1,920 | 35/100 | $0.50 | HIGH |
| → data science papers | 1,920 | 35/100 | $0.50 | HIGH |
| → data science textbooks | 1,920 | 35/100 | $0.50 | HIGH |
| → version control Git | 1,920 | 35/100 | $0.50 | HIGH |
| → agile data science | 1,920 | 35/100 | $0.50 | HIGH |
| → data science documentation | 1,920 | 35/100 | $0.50 | HIGH |
| → academic research blogging | 1,920 | 35/100 | $0.50 | HIGH |
| → backpropagation | 12,800 | 65/100 | $0.50 | MEDIUM |
| → statistical learning | 4,800 | 50/100 | $0.50 | MEDIUM |
| → predictive analytics | 4,800 | 50/100 | $0.50 | MEDIUM |
| → data visualization | 4,800 | 50/100 | $0.50 | MEDIUM |
| → advanced Python | 4,800 | 50/100 | $0.50 | MEDIUM |
| → supervised learning | 4,800 | 50/100 | $0.50 | MEDIUM |
| → unsupervised learning | 4,800 | 50/100 | $0.50 | MEDIUM |
| → neural networks | 4,800 | 50/100 | $0.50 | MEDIUM |
| → data mining | 4,800 | 50/100 | $0.50 | MEDIUM |
| → data wrangling | 4,800 | 50/100 | $0.50 | MEDIUM |
| → regression analysis | 4,800 | 50/100 | $0.50 | MEDIUM |
| → classification algorithms | 4,800 | 50/100 | $0.50 | MEDIUM |
| → clustering techniques | 4,800 | 62/100 | $0.50 | MEDIUM |
| → computer vision | 4,800 | 50/100 | $0.50 | MEDIUM |
| → feature engineering | 4,800 | 50/100 | $0.50 | MEDIUM |
| → model evaluation | 4,800 | 50/100 | $0.50 | MEDIUM |
| → cross validation | 4,800 | 50/100 | $0.50 | MEDIUM |
| → hyperparameter tuning | 4,800 | 50/100 | $0.50 | MEDIUM |
| → data preprocessing | 4,800 | 50/100 | $0.50 | MEDIUM |
| → probability statistics | 4,800 | 50/100 | $0.50 | MEDIUM |
| → Bayesian methods | 4,800 | 50/100 | $0.50 | MEDIUM |
| → optimization algorithms | 4,800 | 50/100 | $0.50 | MEDIUM |
| → gradient descent | 4,800 | 50/100 | $0.50 | MEDIUM |
| → transformers NLP | 4,800 | 50/100 | $0.50 | MEDIUM |
| → responsible AI | 4,800 | 50/100 | $0.50 | MEDIUM |
| → data privacy | 4,800 | 50/100 | $0.50 | MEDIUM |
| → computational methods | 4,800 | 50/100 | $0.50 | MEDIUM |
| → scientific computing | 4,800 | 50/100 | $0.50 | MEDIUM |
| → numerical analysis | 4,800 | 50/100 | $0.50 | MEDIUM |
| → reproducible research | 4,800 | 50/100 | $0.50 | MEDIUM |
| → software engineering data science | 768 | 40/100 | $0.50 | MEDIUM |
| → software development best practices | 672 | 65/100 | $1.00 | MEDIUM |
| → best data science courses | 560 | 45/100 | $1.00 | MEDIUM |
| → data science best practices | 560 | 45/100 | $1.00 | MEDIUM |
📊 Keyword Strategy Recommendations
- Focus on high-opportunity keywords (green badges) for quick ranking wins
- Low difficulty (<40) keywords are easier to rank for in 3-6 months
- High CPC indicates commercial intent - these keywords drive conversions
- Create dedicated landing pages optimized for your primary keywords
- Use these keywords in your title tags, H1s, and meta descriptions
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