What powers sarc.or.jp?
Last seen Jun 2026 · 8 technologies across 7 categories
JavaScript libraries
Operating systems
CentOS
since May 2021
Programming languages
Security
HSTS
since Sep 2022
Web server extensions
Web servers
Webmail
Google Workspace
since Aug 2022
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 52% desktop
- 48% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
7.02 / 10 · ranked #39,353 of all domains
213 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 1.0 MB · 47 requests
Homepage as crawled by the HTTP Archive, Jul 2026.