What powers 20thseiki.com?
Last seen Jun 2026 · 16 technologies across 10 categories
Analytics
Google Analytics
since Jul 2024
CDN
Cloudflare
since Jul 2024
Cross border ecommerce
Ecommerce
Shopify
since Jul 2024
JavaScript libraries
Miscellaneous
HTTP/3
since Jul 2024
Open Graph
since Jul 2024
Payment processors
American Express
since Jul 2024
Apple Pay
since Jul 2024
Google Pay
since Jul 2024
Mastercard
since Jul 2024
Shop Pay
since Jul 2024
Visa
since Jul 2024
Performance
Priority Hints
since Jul 2024
Security
HSTS
since Jul 2024
Webmail
Google Workspace
since Jul 2024
Audience
- 92% phone
- 8% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.49 / 10 · ranked #25,219,474 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- CDN: Cloudflare
- Weight: 6.6 MB · 244 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- dropped Cart Functionality Dec 2025