What powers check.so?
Last seen Jun 2026 · 6 technologies across 4 categories
Caching
Varnish
since Mar 2025
CDN
Cloudflare
since Mar 2025
Fastly
since Mar 2025
Miscellaneous
Open Graph
since Sep 2022
PWA
since Aug 2022
PaaS
GitHub Pages
since Mar 2025
Audience
- 100% phone
United States
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.29 / 10 · ranked #49,750,545 of all domains
0 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- Weight: 0.0 MB · 9 requests
Homepage as crawled by the HTTP Archive, Jul 2026.