What powers zvonek.cz?
Last seen Jun 2026 · 12 technologies across 9 categories
Analytics
Google Analytics
since Jan 2019
Font scripts
Font Awesome
since Jun 2025
Google Font API
since Jan 2019
JavaScript libraries
Programming languages
PHP
since Jan 2019
Security
reCAPTCHA
since Jan 2019
Tag managers
Google Tag Manager
since Feb 2022
Web frameworks
Nette Framework
since Jan 2019
Web servers
Apache HTTP Server
since Jan 2019
Webmail
Google Workspace
since Aug 2022
Audience
- 75% phone
- 25% desktop
Czechia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.00 / 10 · ranked #3,588,877 of all domains
8 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Czech
- Weight: 16.1 MB · 67 requests
Homepage as crawled by the HTTP Archive, Jul 2026.