I want to broadcast to all users when a blog is posted.
Each blog has an image or video.
Broadcasting with normal text is not a problem, but I should show posted image or video in Android notification.
I have found the following link: http://androidbash.com/firebase-push-notification-android/
However I still strugle on how to solve this issue.
From official Firebase FAQ:
Notifications up to 2kb
Data messages up to 4kb
So instead of trying to push image inside message, your application should do differently (for example using webview with image URL).