About Trezor Bridge
Trezor Bridge is the secure and lightweight communication layer that connects your Trezor hardware wallet with desktop apps and browsers. It runs locally on your computer, enabling transaction signing and device management without exposing private keys to the network. The Bridge focuses on privacy, integrity, and a minimal attack surface. It uses secure channels for transport and requires user confirmation on the device for every sensitive action.
Why Bridge Matters
All communication stays on your machine; Bridge does not forward secrets. Only signed transactions leave the device.
Every transaction requires physical confirmation on your Trezor device, preventing remote signing attacks.
Bridge runs on Windows, macOS and Linux and integrates with popular browsers and desktop wallets.
How it works — simple summary
When you plug in your Trezor device, Bridge discovers it and exposes a secure local endpoint that trusted apps can use. Communications are authenticated and encrypted. The device never exposes the private key — it only shares signed payloads after you approve them physically. Bridge auto-updates for security fixes (when enabled) and keeps a minimal footprint so you can quickly start signing transactions.
Installation & Troubleshooting
Install the Bridge package for your operating system and follow the OS prompts. If a browser cannot detect the device: confirm Bridge is running (check system tray/menu bar), reconnect the device, and ensure the website/app is on the allowed list in Bridge settings. Common issues are resolved by restarting Bridge or reinstalling the latest package. Keep your device firmware and Bridge up to date for best security and compatibility.
Privacy & Security best practices
Use a dedicated machine or profile for crypto activities where practical, avoid unknown browser extensions, and never share your recovery seed. Always verify the address displayed on the Trezor's screen before confirming a transaction. If you suspect Bridge is compromised, disconnect the device and reinstall Bridge from an official source.
Frequently asked questions
Yes — Bridge is the recommended local connector for desktop browsers and apps. It provides a standardized secure channel so wallets can communicate with your device.
No. Bridge only routes communication. Your seed and private keys remain stored only on the Trezor device; Bridge cannot read or export them.
Updates are available from the official site and may be automatic (when enabled). Manually re-download and install the package for your OS to update immediately.
Bridge is primarily a desktop connector. Mobile devices typically use other protocols such as USB OTG or Bluetooth (depending on the device) along with native apps.
Restart Bridge and your browser, reconnect the Trezor device, and try another USB port/cable. Reinstall Bridge from the official download page if problems persist.