What powers city.chuo.tokyo.jp?
Last seen Jun 2026 · 7 technologies across 6 categories
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Programming languages
Java
since Jan 2020
Web frameworks
Apache Wicket
since Jan 2020
Web servers
Apache HTTP Server
since Jan 2020
Widgets
Audience
- 67% phone
- 31% desktop
- 1% tablet
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.68 / 10 · ranked #375,485 of all domains
88 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 0.6 MB · 37 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.library.city.chuo.tokyo.jp | 7 |
| library.city.chuo.tokyo.jp | 5 |
Full technology history →
Report an incorrect detection
Recent changes
- detected ReadSpeaker Aug 2025
- detected Slick Aug 2025