FCM Notification Tester iconFCM Notification TesterFirebase push notification tool
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Firebase Cloud Messaging testing guides

Practical references for testing Firebase push notifications with FCM HTTP v1.

Start with the FCM notification tester

If you already have a Firebase service account JSON file and a device registration token, open the FCM Notification Tester. Upload or paste the JSON, enter the token, title, message, optional data, and send.

Guides

FCM testing

Test an FCM notification online

A complete single-device testing workflow.

 Credentials

Firebase service account JSON

Generate and protect the private key file used for server authorization.

 Registration

Get an FCM device token

Find the token generated by the Firebase Messaging client SDK.

 API

FCM HTTP v1 API

Understand OAuth 2.0 authorization and the current send endpoint.

 Troubleshooting

FCM notification not showing

Common reasons a successful send does not appear on the device.