What powers central-engineering.jp?
Last seen Jun 2026 · 24 technologies across 13 categories
Analytics
Google Analytics
since Apr 2020
CDN
Cloudflare
since Aug 2022
Issue trackers
Sentry
since Oct 2024
JavaScript frameworks
Next.js App Router
since Jul 2025
React
since Jul 2025
JavaScript libraries
Miscellaneous
Performance
Priority Hints
since Jul 2025
Programming languages
Reverse proxies
Envoy
since Oct 2024
Security
Cloudflare Bot Management
since Aug 2022
HSTS
since Oct 2024
Tag managers
Google Tag Manager
since Apr 2020
UI frameworks
Tailwind CSS
since Oct 2024
Web servers
Nginx
since Apr 2020
Audience
- 60% phone
- 40% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.83 / 10 · ranked #4,200,953 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese (Japan)
- Weight: 2.0 MB · 118 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| note.central-engineering.jp | 17 |
| www.central-engineering.jp | 8 |
Full technology history →
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Recent changes
- dropped Svelte Feb 2026