Welcome to OfflineLink

Secure, offline-first messaging. Sign in to get started.

Choose a Username

This will be your unique identifier on OfflineLink. It cannot be changed later.

OfflineLink
Offline-first messaging

Contacts

Nearby OfflineLink Users

Search for and connect to compatible OfflineLink devices nearby. Your browser will prompt you to select a device. No files are searched or shared.

Device Discovery

Click "Search Nearby" to open your browser's Bluetooth device picker. You must select a device that is actively advertising the OfflineLink service.

Disconnected — ready to search.

Important Limitations

  • No silent scanning: Web Bluetooth requires you to manually pick a device from a browser popup. It cannot silently list all nearby phones.
  • Browser support required: Only works in Chrome, Edge, or Opera on desktop or Android. Safari and Firefox do not support Web Bluetooth.
  • Requires a compatible receiver: The target device must be running a native app or service that actively advertises the OfflineLink Bluetooth GATT service. Another phone with this web page open cannot be discovered.

Settings

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You
you@example.com
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Your profile and conversations are securely stored in Firebase. This web app caches data locally for offline resilience.