Trezor bridge

Trezor Bridge

A lightweight local connector that lets your computer communicate securely with your Trezor hardware wallet.

What is Trezor Bridge?

Trezor Bridge is a small local application that facilitates secure communication between the Trezor hardware device and your web browser or desktop application. It runs on your computer and handles USB or WebUSB connections so companion software can detect and interact with the device without exposing private keys.

Installing and Using Bridge

To use a Trezor with a browser interface or some desktop apps, install the Bridge appropriate for your operating system (Windows, macOS, or Linux). After installing, start the Bridge service and then open the Trezor companion app or supported website. The software will detect the device and guide you through setup, firmware updates, or transactions.

  • Install the correct Bridge package for your OS and follow on-screen prompts.
  • When connecting, confirm the device prompts on the Trezor screen to authorize actions.
  • If multiple browser windows are open, allow the site to access the Trezor device when prompted.

Security Considerations

Trezor Bridge is a local-only service — it does not transmit your private keys or seed over the internet. Key security tips:

  • Only install Bridge from official sources or trusted distributors.
  • Keep Bridge and your companion apps updated to receive security fixes.
  • Always verify transaction details on the Trezor device display before confirming.
  • Do not enter your recovery seed into any computer or browser window; seeds are generated and shown on the device itself.
Note: Bridge facilitates communication only. The device itself performs cryptographic signing and key storage.

Troubleshooting

  • Device not detected: Try a different USB cable or port, restart the Bridge service, or reboot your computer.
  • Browser access blocked: Ensure the browser allows local connections to Bridge and that no extension is interfering.
  • Update required: If Bridge or the companion app prompts for an update, install it to resolve compatibility issues.
  • Permission dialogs: Accept prompts from your browser to allow sites to access the Trezor device; always confirm site authenticity before approving.

Final Tips

Use Bridge as the secure, minimal layer between your device and apps. Treat software that interacts with it with the same caution you apply to wallets: verify sources, apply updates, and confirm actions on-device. Doing so keeps private keys offline and under your control while still letting you manage crypto conveniently.