Trezor Bridge Official

What is Trezor Bridge?

Trezor Bridge is a lightweight desktop service that creates a secure channel between your Trezor hardware wallet and browser-based crypto apps. It makes the device accessible to web pages and desktop apps without exposing private keys — acting purely as a translator that passes signed messages and user requests to the device and back.

Why it's essential

Modern browsers intentionally limit direct access to USB or HID devices for security reasons. Trezor Bridge fills that gap: it ensures reliable connectivity across different operating systems and browser versions while keeping the delicate cryptographic operations on the device itself. For anyone managing cryptocurrencies, that separation dramatically reduces attack surface.

• Cross-browser compatibility and consistent behavior.
• Keeps private keys isolated on the hardware device.
• Improves user experience for signing transactions and managing accounts.

How it works (simple)

Trezor Bridge runs locally on your machine and listens for secure requests from browser pages. When a web wallet or dApp wants to interact with your Trezor, it sends a request to Bridge. Bridge prompts the Trezor device, waits for the user confirmation on the device and returns the signed response — always requiring the physical confirmation button on the device for critical actions.

Security & Privacy

Trezor Bridge follows a security-first design: minimal local footprint, encrypted communications between browser and Bridge, and strict user confirmation for every sensitive operation. Because sensitive computations happen inside the Trezor hardware, malware on the host machine has no direct access to your private keys.

Always download Bridge from official channels and verify digital signatures where provided. Avoid unofficial builds or third-party modified versions.

Installation & Updates

Installation is straightforward: download the platform-specific installer for Windows, macOS, or Linux and follow the guided steps. Once installed, Bridge runs automatically when you connect your Trezor device and open a compatible web wallet or the Trezor Suite.

Tip: If your browser does not detect the device, try restarting Bridge or reconnecting the USB cable. Also check that your browser and OS are up to date.

Troubleshooting quick fixes

• If the device is not detected: disconnect and reconnect USB, try a different cable or port.
• If Bridge won’t install: run the installer as administrator (Windows) or ensure correct permissions on macOS/Linux.
• Conflicting software: some security tools can block device access — temporarily disable or whitelist Bridge if necessary.

Best practices

• Always confirm transaction details on the device screen before approving.
• Keep Trezor firmware and Bridge updated to the latest official releases.
• Download Bridge only from the official Trezor website or verified distribution channels.

Frequently asked (short)

Can Bridge access my seed?

No. Bridge never has access to your recovery seed or private keys.

Does Bridge run in the cloud?

No. Bridge runs locally on your machine and never transmits signing requests to any remote servers.