Sinkbox

Push Notification Simulator

Simulate lock screen notifications and banner alerts for iOS and Android with app icons, rich media attachments, action buttons, and custom data payloads.

The Push Notification Simulator parses mobile push payloads from Firebase Cloud Messaging (FCM), Apple Push Notification service (APNs), and OneSignal, rendering them as realistic mobile alerts.

Device Styles & Interaction

Inspect push alerts in both iOS and Android native design systems:

  • iOS Lock Screen & Notification Center: Displays translucent glassmorphism cards, app icons, subtitles, and rounded interactive action buttons.
  • Android Material Notification: Displays modern Android notification headers, expanded text previews, and action chips.
  • Theme Toggle: Switch between Light and Dark mode to ensure notification banners maintain sufficient contrast and readability.

Rich Media & Interactive Actions

  • Media Attachments: Inspect embedded image banners and media URLs directly in the push preview card.
  • Action Buttons & Deep Links: Inspect interactive notification action buttons and their destination URLs or deep link URI schemes.
  • Custom Data & JSON Metadata: View additional JSON payload key-value pairs, tracking parameters, and custom application metadata.