What is the Character Limit for Message text in Firebase console based notification?

i'm using Firebase console to send a notification to my phone, the notification is successfully delivered to my phone, but i want to know, What is the Character Limit for Message text in Firebase console based notification?

Upvotes: 18

Answers (4)

Maxim Mazurok

Reputation: 4138

I'm able to send 4506 character string using API:

admin
  .messaging()
  .send({
    token: fcmRegistrationToken,
    data: {
      "": "a".repeat(4506)
    },
  })
  .then((response) => {
    console.log("Successfully sent message:", response);
  })
  .catch((error) => {
    console.log("Error sending message:", error);
  });

Despite docs saying that 4096 is the limit: https://firebase.google.com/docs/cloud-messaging/concept-options#notifications_and_data_messages:~:text=Maximum%20payload%20for%20both%20message%20types%20is%204096%20bytes

(probably still don't use 4506 in production since it's not documented - it can stop working at any point, I'll probably be using 4000 to leave some margin for error)

Upvotes: 0

Zeljko Kozina

Reputation: 149

Official docks now mention 1024 for the console and 4KB for the API

Notification messages contain a predefined set of user-visible keys. Data messages, by contrast, contain only your user-defined custom key-value pairs. Notification messages can contain an optional data payload. Maximum payload for both message types is 4000 bytes, except when sending messages from the Firebase console, which enforces a 1024 character limit.

https://firebase.google.com/docs/cloud-messaging/concept-options#notifications

Upvotes: 0