What powers tema21.cz?
Last seen Jun 2026 · 35 technologies across 20 categories
Analytics
Google Analytics
since Apr 2025
CDN
cdnjs
since Apr 2025
Cloudflare
since Apr 2025
CMS
Databases
MySQL
since Dec 2025
Font scripts
Font Awesome
since Apr 2025
Google Font API
since Apr 2025
JavaScript libraries
LazySizes
since Dec 2025
Miscellaneous
Operating systems
Windows Server
since Apr 2025
PaaS
Azure
since Apr 2025
Performance
Priority Hints
since Dec 2025
Programming languages
PHP
since Dec 2025
Security
Cloudflare Bot Management
since Mar 2026
HSTS
since Apr 2025
SEO
Tag managers
Google Tag Manager
since Apr 2025
UI frameworks
Tailwind CSS
since Apr 2025
Video players
Vimeo
since Mar 2026
Web frameworks
Microsoft ASP.NET
since Apr 2025
Web servers
Widgets
SoundCloud
since Mar 2026
WordPress plugins
Audience
- 54% phone
- 46% desktop
Czechia
Slovakia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.77 / 10 · ranked #2,053,871 of all domains
18 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.3 s |
| INP | 100 ms |
| CLS | 0.05 |
| TTFB | 2600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Czech (Czechia)
- Weight: 2.1 MB · 64 requests
- WordPress theme: jnews (child: jnews-child) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| tema21.cz | 27 |
| www.tema21.cz | 10 |
Full technology history →
Report an incorrect detection
Recent changes
- detected core-js Apr 2026
- detected Facebook Pixel Apr 2026
- detected Cloudflare Bot Management Mar 2026
- detected Contact Form 7 Mar 2026
- detected SoundCloud Mar 2026
- detected Vimeo Mar 2026
- dropped Twitter Emoji (Twemoji) Feb 2026
- detected Complianz Jan 2026
- detected Google Analytics Jan 2026
- detected Google Tag Manager Jan 2026
- detected Yoast SEO Jan 2026
- detected Yoast SEO Premium Jan 2026
- dropped core-js Sep 2025
- dropped Facebook Pixel Sep 2025
- dropped Google Analytics Sep 2025
- dropped Google Tag Manager Sep 2025