What powers jsgu.org?
Last seen Jun 2026 · 18 technologies across 11 categories
Caching
Varnish
since Aug 2025
CDN
Cloudflare
since May 2026
IaaS
Google Cloud
since Aug 2025
JavaScript frameworks
JavaScript libraries
Miscellaneous
Google Cloud Storage
since Aug 2025
HTTP/3
since Aug 2025
Open Graph
since Sep 2022
Webpack
since Aug 2025
Performance
Google Cloud Trace
since Aug 2025
Priority Hints
since Aug 2025
Programming languages
Node.js
since Aug 2025
Security
HSTS
since Aug 2025
Web servers
Apache HTTP Server
since Apr 2020
Webmail
Microsoft 365
since Jan 2023
Audience
- 60% phone
- 40% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.21 / 10 · ranked #9,793,240 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 75 ms |
| CLS | 0.6 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- CDN: Fastly
- Weight: 3.9 MB · 99 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| jsgu.org | 15 |
| www.jsgu.org | 3 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare May 2026
- dropped PHP Sep 2025
- detected Google Cloud Aug 2025
- detected Google Cloud Storage Aug 2025
- detected Google Cloud Trace Aug 2025
- detected HSTS Aug 2025
- detected HTTP/3 Aug 2025
- detected Next.js Aug 2025
- detected Next.js App Router Aug 2025
- detected Node.js Aug 2025
- detected Priority Hints Aug 2025
- detected React Aug 2025
- detected Varnish Aug 2025
- detected Webpack Aug 2025