What powers opterra.co.jp?
Last seen Jun 2026 · 11 technologies across 7 categories
Form builders
Google Forms
since Jul 2025
JavaScript frameworks
Miscellaneous
Open Graph
since Jul 2025
Webpack
since Jul 2025
PaaS
Amazon Web Services
since Jul 2025
Netlify
since Jul 2025
Performance
Priority Hints
since Jul 2025
Programming languages
Node.js
since Jul 2025
Security
HSTS
since Jul 2025
Audience
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.80 / 10 · ranked #4,370,182 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.2 s |
| INP | 25 ms |
| CLS | 0.3 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- CDN: Netlify
- Weight: 8.1 MB · 294 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.