What powers optys.cz?
Last seen Jun 2026 · 16 technologies across 11 categories
Analytics
Google Analytics
since Jan 2019
Snowplow Analytics
since Jan 2024
SparkPost
since Aug 2022
Issue trackers
Sentry
since Jan 2024
JavaScript frameworks
JavaScript libraries
Miscellaneous
Open Graph
since Jan 2024
Webpack
since Jan 2024
Performance
Priority Hints
since Jan 2024
Programming languages
Node.js
since Jan 2024
Security
HSTS
since Jun 2024
UI frameworks
Tailwind CSS
since Apr 2022
Web servers
Apache HTTP Server
since Jan 2019
Audience
- 60% phone
- 37% desktop
- 2% tablet
Czechia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.68 / 10 · ranked #772,923 of all domains
30 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.7 s |
| INP | 250 ms |
| CLS | 0 |
| TTFB | 1500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Czech
- Weight: 8.2 MB · 88 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- dropped Google Font API Jun 2026
- detected Google Font API Apr 2026
- dropped MUI Nov 2025