Trezor Bridge — Secure & Smooth Crypto Access

Local bridge service to connect your Trezor hardware wallet with web and desktop apps
Local & Private

Bridge your browser and apps to your device — safely, privately, reliably.

Trezor Bridge runs on your computer as a small, trusted intermediary. It lets web wallets, portfolio tools, and desktop apps communicate with your connected Trezor device without exposing private keys or sensitive data to the network. Think of it as a secure local channel: lightweight, permissioned, and designed to minimize risk while keeping the experience seamless.

Privacy-first

Bridge operates locally on your machine — no remote servers or cloud relays. Requests stay on your host until you approve them on-device.

Verified Signing

All signing requests are shown on the physical Trezor screen. Only after you confirm will a signature be produced, keeping private keys offline.

Cross-platform

Available installers for Windows, macOS, and Linux with automatic updates and simple installation steps.

Developer-friendly

Well-documented local APIs and example integrations make it straightforward for apps to support Trezor devices securely.

How Trezor Bridge works

  1. Your browser or desktop app sends a request to the Bridge service running on your computer.
  2. Bridge verifies the origin and forwards the encrypted request to the connected Trezor device via USB or supported transport.
  3. The Trezor device displays transaction details and requests manual confirmation from you.
  4. Once you approve, the device signs the transaction locally and Bridge relays the signed data back to the originating app for broadcast.

Bridge is a relay only — it never stores or transmits your private keys. All key material remains inside the Trezor at all times.

Developer integration

Trezor Bridge exposes a minimal local API allowing secure, origin-checked requests from web pages and desktop apps. Developers should follow best practices: request minimal scopes, present clear user prompts, and always guide users to verify transaction details on the device. Example SDKs and code samples are available in the documentation to streamline integration.

  • Authenticate and verify the calling origin before forwarding requests.
  • Use short-lived sessions and explicit user consent flows.
  • Provide clear UI messages asking users to verify values on-device.

Security recommendations

  • Install Bridge only from official Trezor sources and verify package signatures when available.
  • Keep device firmware up to date; firmware updates often include security patches and compatibility improvements.
  • Verify transaction output addresses and amounts directly on the device screen before approving.
  • Run Bridge on personal, trusted machines — avoid use on public or unmanaged systems.

Troubleshooting

Common issues tend to be connectivity or permission-related. Follow these steps:

  1. Check that the USB cable is fully connected and that the Trezor device is powered.
  2. Restart the Bridge service (look for the Bridge icon in your system tray or taskbar) and refresh the web page or app.
  3. Inspect browser permissions — some browsers require you to grant local socket permissions for Bridge to be accessible.
  4. As a last resort, reinstall Bridge from the official website and reboot your system.

Privacy & data handling

Trezor Bridge is intentionally designed to minimize data exposure. It operates locally and does not collect or transmit personal data to remote servers. Diagnostic logs (if enabled) should be reviewed for sensitive content before sharing with support teams.

Resources & support

For downloads, developer documentation, and help articles visit the official Trezor documentation page. If you encounter unresolved problems, the community forums and official support channels can provide troubleshooting assistance.