What powers jrchcn.ac.jp?
Last seen Jun 2026 · 12 technologies across 9 categories
Analytics
Google Analytics
since Jan 2019
JavaScript libraries
Slick
since Jan 2019
Miscellaneous
Open Graph
since May 2026
Programming languages
Ruby
since May 2026
Security
HSTS
since Jun 2023
Web frameworks
Ruby on Rails
since May 2026
Web servers
Apache HTTP Server
since Jan 2019
Webmail
Google Workspace
since Aug 2022
Widgets
EmbedSocial
since Apr 2024
Audience
- 52% phone
- 48% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.49 / 10 · ranked #908,830 of all domains
42 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 15.5 MB · 138 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.jrchcn.ac.jp | 9 |
| library.jrchcn.ac.jp | 7 |