What powers seikansou.jp?
Last seen Jun 2026 · 28 technologies across 16 categories
Analytics
Google Analytics
since Jul 2024
Caching
W3 Total Cache
since Apr 2023
CDN
Google Hosted Libraries
since May 2022
jsDelivr
since Dec 2020
CMS
Databases
MySQL
since Dec 2020
Font scripts
Google Font API
since Dec 2020
Twitter Emoji (Twemoji)
since Dec 2020
JavaScript libraries
Lightbox
since Dec 2020
Miscellaneous
Operating systems
AlmaLinux
since Apr 2023
Programming languages
Security
HSTS
since Apr 2023
UI frameworks
Bootstrap
since Oct 2025
MDBootstrap
since Oct 2025
Web server extensions
Web servers
Widgets
AddToAny
since Dec 2020
WordPress plugins
Smash Balloon Instagram Feed
since Sep 2023
Audience
- 60% phone
- 40% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.89 / 10 · ranked #3,900,333 of all domains
7 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 1.9 MB · 95 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- detected Twitter Emoji (Twemoji) Dec 2025
- detected Bootstrap Oct 2025
- detected core-js Oct 2025
- dropped FingerprintJS Oct 2025
- detected MDBootstrap Oct 2025