What powers 4sailors.cz?
Last seen Aug 2026 · 12 technologies across 10 categories
Analytics
Google Analytics
since Mar 2023
Authentication
Facebook Login
since Mar 2023
CMS
Font scripts
Google Font API
since Mar 2023
JavaScript libraries
Live chat
Facebook Chat Plugin
since Mar 2023
Maps
Google Maps
since Mar 2023
Miscellaneous
Open Graph
since Mar 2023
Performance
Priority Hints
since Mar 2023
Programming languages
PHP
since Mar 2023
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Aug 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.40 / 10 · ranked #36,473,656 of all domains
0 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 3.9 MB · 55 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Aug 2026.
Full technology history →
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Recent changes
- dropped Nginx Mar 2026