What powers fredericletzner-kurs.de?
Last seen Aug 2026 · 25 technologies across 16 categories
Analytics
Cloudflare Browser Insights
since Jul 2026
Pendo
since Aug 2026
Appointment scheduling
Calendly
since Jul 2026
CDN
Mailgun
since Jul 2026
Font scripts
Bunny Fonts
since Jul 2026
Google Font API
since Jul 2026
IaaS
Google Cloud
since Jul 2026
Issue trackers
Sentry
since Aug 2026
JavaScript frameworks
JavaScript libraries
Marketing automation
HighLevel
since Jul 2026
Miscellaneous
Open Graph
since Jul 2026
PWA
since Aug 2026
Programming languages
Node.js
since Jul 2026
TypeScript
since Aug 2026
Security
Cloudflare Bot Management
since Jul 2026
HSTS
since Aug 2026
Tag managers
Google Tag Manager
since Jul 2026
UI frameworks
Naive UI
since Aug 2026
Web frameworks
Express
since Aug 2026
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Aug 2026.
- robots.txt found
- llms.txt not found
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 100% phone
Germany
Austria
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.51 / 10 · ranked #24,182,925 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German
- CDN: Cloudflare, Google
- Weight: 2.2 MB · 51 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Subdomains
| Host | Techs |
|---|---|
| fredericletzner-kurs.de | 18 |
| portal.fredericletzner-kurs.de | 12 |