What powers kaiseikan.ed.jp?
Last seen Jun 2026 · 18 technologies across 13 categories
CMS
Databases
MySQL
since Jan 2019
Font scripts
Twitter Emoji (Twemoji)
since Jul 2020
JavaScript libraries
Maps
Google Maps
since Aug 2025
Miscellaneous
RSS
since Dec 2022
Performance
Priority Hints
since Sep 2025
Programming languages
PHP
since Jan 2019
Video players
YouTube
since Jul 2020
Web servers
Nginx
since Jul 2020
Webmail
Microsoft 365
since Aug 2022
WordPress plugins
Smash Balloon Instagram Feed
since Feb 2022
WordPress themes
Audience
- 67% phone
- 33% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.37 / 10 · ranked #1,044,467 of all domains
25 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 16.9 MB · 169 requests
- WordPress theme: hello-elementor · all themes
- Structured data: Microdata
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- dropped Swiper Mar 2026
- detected Swiper Dec 2025
- detected Twitter Emoji (Twemoji) Dec 2025
- dropped Cloudflare Sep 2025
- dropped Cloudflare Bot Management Sep 2025
- dropped Facebook Login Sep 2025
- dropped Google Analytics Sep 2025
- dropped Google Font API Sep 2025
- dropped Google Tag Manager Sep 2025
- dropped Lozad.js Sep 2025
- dropped Open Graph Sep 2025
- dropped Polyfill Sep 2025
- detected Priority Hints Sep 2025
- dropped Slick Sep 2025
- dropped Twenty Seventeen Sep 2025
- dropped Twitter Sep 2025
- dropped Twitter Ads Sep 2025
- dropped Twitter Emoji (Twemoji) Sep 2025