What powers jakub.cz?
Last seen Aug 2026 · 24 technologies across 11 categories
Analytics
Google Analytics
since Jan 2019
CDN
Font scripts
Font Awesome
since Apr 2020
Google Font API
since Apr 2020
Issue trackers
Sentry
since May 2026
JavaScript frameworks
JavaScript libraries
Miscellaneous
Programming languages
TypeScript
since Jun 2021
Security
Web server extensions
Web servers
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 73% phone
- 27% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.36 / 10 · ranked #1,056,106 of all domains
31 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 0.9 MB · 49 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on GIGASERVER (185.66.36.24)
- Email: jakub.cz
- Email security: SPF (hard fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 11,947,944, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| eshop.jakub.cz | 17 |
| www.jakub.cz | 9 |
Full technology history →
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