What powers seibidou.jp?
Last seen Aug 2026 · 24 technologies across 16 categories
A/B Testing
Karte
since Aug 2026
Advertising
Yahoo Advertising
since Apr 2022
Analytics
Google Analytics
since Jul 2020
CDN
Cloudflare
since May 2022
CMS
Databases
MySQL
since Sep 2025
Font scripts
Google Font API
since Jul 2020
Twitter Emoji (Twemoji)
since Dec 2025
JavaScript frameworks
GSAP
since Sep 2025
JavaScript libraries
Swiper
since Sep 2025
Miscellaneous
Open Graph
since Sep 2022
Performance
LazySizes
since Sep 2025
Programming languages
PHP
since Sep 2025
Security
Cloudflare Bot Management
since Jul 2026
reCAPTCHA
since Mar 2026
Tag managers
Google Tag Manager
since Jul 2020
Web servers
Apache HTTP Server
since Jul 2020
WordPress plugins
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 83% desktop
- 17% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.41 / 10 · ranked #997,727 of all domains
28 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 3.3 MB · 108 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Aug 2026.
Full technology history →
Report an incorrect detection
Recent changes
- detected Karte Aug 2026
- detected Cloudflare Jul 2026
- detected Cloudflare Bot Management Jul 2026
- detected reCAPTCHA Mar 2026
- detected Twitter Emoji (Twemoji) Dec 2025
- dropped cdnjs Oct 2025
- dropped Cloudflare Oct 2025
- dropped Font Awesome Oct 2025
- dropped Google Ads Oct 2025
- dropped Google Ads Conversion Tracking Oct 2025
- dropped Google Hosted Libraries Oct 2025
- dropped Microsoft Clarity Oct 2025
- dropped Modernizr Oct 2025