Single-page app on Cloudflare Workers showing your public IP, edge metadata from request.cf (geo, ASN, colo, HTTP/TLS, TCP RTT, optional TLS fingerprint fields when Cloudflare provides them), and all inbound request headers.

npm install
npm run dev

Open the URL Wrangler prints (often http://localhost:8787). Geo fields may be sparse in local dev; deploy to Cloudflare for full request.cf data.

npx wrangler login   # once
npm run deploy

GET /api returns JSON:

{
  "ip": "...",
  "location": { "country": "...", "city": "...", ... },
  "headers": { "...": "..." }
}

GET / serves the HTML shell (same app).