What powers oknafenestra.cz?
Last seen Sep 2026 · 24 technologies across 12 categories
Analytics
Google Analytics
since Jan 2023
Microsoft Clarity
since Jul 2024
CDN
cdnjs
since Aug 2026
Cloudflare
since Aug 2026
CMS
Databases
MySQL
since Jan 2023
JavaScript libraries
Live chat
WhatsApp Business Chat
since Jan 2023
Miscellaneous
Performance
Priority Hints
since Jan 2023
Programming languages
PHP
since Jan 2023
Tag managers
Google Tag Manager
since Jan 2023
UI frameworks
Animate.css
since Mar 2023
WordPress plugins
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 72% phone
- 28% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.43 / 10 · ranked #7,135,644 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.6 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 2200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 2.0 MB · 106 requests
- WordPress theme: themify-ultra (child: themify-ultra-child) · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- FENESTRA střešní okna, s.r.o.
- Industry: Home and construction (declares
HomeAndConstructionBusiness)
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on INTERNET-CZ Ktis 2, 384 03 Ktis (185.129.138.106)
- DNS: forpsi.cz
- Email: forpsi.com
- Email security: no SPF record, no DMARC record, DNSSEC signed
- Common Crawl link graph: rank 61,670,819
DNS records as swept Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- detected cdnjs Aug 2026
- detected Cloudflare Aug 2026
- detected Isotope Aug 2026
- detected Lightbox Apr 2026
- dropped Burst Feb 2026
- dropped Facebook Pixel Feb 2026
- dropped Apache HTTP Server Jan 2026
- detected Google Analytics Jan 2026
- detected Google Tag Manager Jan 2026
- detected HTTP/3 Dec 2025
- dropped Autoptimize Nov 2025
- dropped LazySizes Nov 2025