What powers opjak.cz?
Last seen Jun 2026 · 27 technologies across 16 categories
Analytics
CMS
Cookie compliance
Databases
Font scripts
JavaScript libraries
Miscellaneous
Operating systems
Performance
Programming languages
Security
SEO
UI frameworks
Web server extensions
Web servers
WordPress plugins
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| johann amos comenius | #5 | 3 |
| comenius | #23 | 1 |
| prvni zprvy | #9 | 1 |
| s | #30 | 0 |
| uzemi | #94 | 0 |
| vzkum | #14 | 0 |
| opvvv | #44 | 0 |
| opvvv | #17 | 0 |
| poet | #89 | 0 |
| publicita | #28 | 0 |
| prvn zprvy | #48 | 0 |
| prvn zprvy | #14 | 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
- 77% desktop
- 23% phone
Czechia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
6.43 / 10 · ranked #80,154 of all domains
220 referring domains · OpenPageRank
Search traffic
5 est. monthly organic visits (US)
12 keywords in Google's top 30
Core Web Vitals
| LCP | 1.4 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Czech (Czechia)
- Weight: 7.3 MB · 69 requests
- WordPress theme: bootscore-5 (child: bootscore-5-child) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| opjak.cz | 25 |
| evaluace.opjak.cz | 9 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Twitter Emoji (Twemoji) Jun 2026
- dropped Microsoft 365 Oct 2025
- dropped Selectize Aug 2025