What powers osa.cz?
Last seen Jun 2026 · 25 technologies across 18 categories
Analytics
Ecommerce
Font scripts
Issue trackers
JavaScript frameworks
JavaScript graphics
JavaScript libraries
Miscellaneous
Operating systems
PaaS
Photo galleries
Programming languages
Security
Tag managers
UI frameworks
Web frameworks
Web servers
Webmail
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| who was the founder of czech national music | #73 | 0 |
| composers from prague | #46 | 0 |
| svaz | #97 | 0 |
| vadim petrov | #73 | 0 |
| sergei barracuda | #53 | 0 |
| martin chobot | #94 | 0 |
| ady das | #29 | 0 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 50% phone
- 50% desktop
Czechia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
6.16 / 10 · ranked #99,684 of all domains
206 referring domains · OpenPageRank
Search traffic
0 est. monthly organic visits (US)
7 keywords in Google's top 30
Core Web Vitals
| LCP | 1.2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Czech
- Weight: 2.5 MB · 94 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| shop.osa.cz | 14 |
| www.osa.cz | 12 |
| search.osa.cz | 10 |
| archiv.osa.cz | 7 |
| partnerstvi.osa.cz | 6 |
| autor.osa.cz | 5 |
| blog.osa.cz | 5 |
| dedic.osa.cz | 5 |
| forms.osa.cz | 4 |
Full technology history →
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Recent changes
- dropped cdnjs Feb 2026
- dropped Cloudflare Feb 2026
- dropped jQuery CDN Feb 2026
- dropped Popper Feb 2026
- detected Sentry Jan 2026