What powers ischool.cz?
Last seen Jun 2026 · 9 technologies across 7 categories
Font scripts
JavaScript libraries
Programming languages
PHP
since Mar 2022
Security
HSTS
since Dec 2025
Tag managers
Google Tag Manager
since Apr 2021
Web servers
Webmail
Google Workspace
since Aug 2022
Audience
Czechia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.04 / 10 · ranked #1,515,012 of all domains
10 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 1.4 MB · 36 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- detected HSTS Dec 2025