What powers 4drun.cz?
Last seen Aug 2026 · 6 technologies across 6 categories
CMS
Font scripts
Google Font API
since Nov 2022
JavaScript libraries
Miscellaneous
Open Graph
since Oct 2022
Performance
Priority Hints
since Nov 2022
Programming languages
PHP
since Oct 2022
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
- 100% phone
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.20 / 10 · ranked #9,868,117 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 1.4 MB · 50 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Aug 2026.
Full technology history →
Report an incorrect detection