What powers seizan.ed.jp?
Last seen Aug 2026 · 38 technologies across 20 categories
Advertising
Yahoo Advertising
since Apr 2022
Analytics
Google Analytics
since Apr 2022
CDN
CMS
Databases
MySQL
since Apr 2022
Font scripts
JavaScript libraries
Swiper
since Sep 2022
Maps
Google Maps
since Dec 2022
Miscellaneous
Open Graph
since Sep 2022
RSS
since Dec 2022
Performance
LazySizes
since Dec 2022
Programming languages
PHP
since Apr 2022
Security
Tag managers
Google Tag Manager
since Jun 2022
UI frameworks
Bootstrap
since Apr 2022
Video players
YouTube
since Oct 2025
Web servers
Nginx
since Apr 2022
Webmail
Google Workspace
since Aug 2022
Widgets
AddToAny
since Apr 2022
WordPress plugins
AddToAny Share Buttons
since Apr 2022
EWWW Image Optimizer
since Dec 2022
Shortcodes Ultimate
since Apr 2022
TablePress
since Dec 2022
WordPress themes
FameThemes OnePress
since Apr 2022
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Aug 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 83% phone
- 17% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.37 / 10 · ranked #2,746,610 of all domains
11 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.6 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 3.0 MB · 80 requests
- WordPress theme: onepress · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Subdomains
| Host | Techs |
|---|---|
| cor.seizan.ed.jp | 33 |
| www.seizan.ed.jp | 30 |
Full technology history →
Report an incorrect detection
Recent changes
- detected HSTS May 2026
- detected Google Tag Manager Jan 2026
- detected Twitter Emoji (Twemoji) Dec 2025
- detected YouTube Oct 2025