What powers willi.cz?
Last seen Sep 2026 · 17 technologies across 11 categories
Analytics
Google Analytics
since Dec 2020
CDN
cdnjs
since Nov 2021
Cloudflare
since May 2022
SparkPost
since Aug 2022
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
PWA
since Aug 2022
Programming languages
PHP
since Dec 2020
Security
Tag managers
Google Tag Manager
since Dec 2020
UI frameworks
Web frameworks
Nette Framework
since Dec 2020
Web servers
Apache HTTP Server
since Dec 2020
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 93% phone
- 7% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.52 / 10 · ranked #2,456,158 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 2.2 MB · 67 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on MASTER-AS Czech Republic www.master.cz (178.238.40.171)
- DNS: websupport.cz
- Email: Active 24
- Email security: SPF (soft fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 30,736,629, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted