FCM Notification Sender
No service account key loaded.
Upload Service Account Key
Drag & drop your
serviceAccountKey.json
here, or click to browse.
Stored in your browser only — never sent to any third-party server.
FCM Device Token
Title
Body
Sound
Android Channel ID
Send Notification
Pure client-side — no backend. Uses FCM HTTP v1 API with JWT signed in your browser via Web Crypto API.