What powers flexibooks.cz?
Last seen Jun 2026 · 14 technologies across 10 categories
Analytics
Google Analytics
since Jan 2019
Ecommerce
Cart Functionality
since Nov 2021
Font scripts
Google Font API
since Jan 2019
JavaScript frameworks
JavaScript libraries
Lightbox
since Jan 2019
Miscellaneous
Open Graph
since Sep 2022
Security
HSTS
since Sep 2022
Web frameworks
Microsoft ASP.NET
since Sep 2021
Web servers
Apache HTTP Server
since Nov 2022
Webmail
Microsoft 365
since Sep 2025
Audience
- 55% desktop
- 39% phone
- 5% tablet
Czechia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.16 / 10 · ranked #474,448 of all domains
49 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 250 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Czech
- Weight: 1.0 MB · 99 requests
- Structured data: Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| flexibooks.cz | 11 |
| ctecka.flexibooks.cz | 5 |
| online.flexibooks.cz | 5 |
Full technology history →
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Recent changes
- detected Microsoft 365 Sep 2025