What powers seikai.co.jp?
Last seen Jun 2026 · 23 technologies across 13 categories
Advertising
FreakOut
since Jun 2022
Analytics
Google Analytics
since Aug 2018
Authentication
Facebook Login
since Jun 2021
CDN
Font scripts
Google Font API
since Aug 2018
Hosting
Sakura Internet
since Aug 2022
JavaScript frameworks
Vue.js
since Mar 2020
JavaScript libraries
Miscellaneous
Babel
since Mar 2020
Programming languages
TypeScript
since Dec 2022
Tag managers
Google Tag Manager
since Feb 2020
Web servers
Nginx
since Aug 2018
Widgets
Audience
- 69% phone
- 31% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.93 / 10 · ranked #629,110 of all domains
54 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 75 ms |
| CLS | 0.55 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 7.8 MB · 154 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| seikai.co.jp | 23 |
| www.seikai.co.jp | 23 |
Full technology history →
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Recent changes
- dropped GSAP Jun 2026