Trezor Bridge — Secure Connection for Your Trezor Hardware

Overview: Trezor Bridge is a lightweight desktop service that safely links your Trezor hardware wallet to web-based and desktop wallets. It simplifies USB communication while keeping private keys locked on-device.

Why Bridge?

Browsers cannot always access USB devices directly in a consistent, secure way across operating systems. Trezor Bridge fills that gap by running locally and exposing a controlled API that trusted wallet apps can use. This approach reduces compatibility issues and avoids needing browser extensions or insecure plugins.

Key benefits

Compatibility: Works across Windows, macOS and Linux without per-browser drivers.
Security-focused: All sensitive operations require confirmation on the Trezor device; Bridge never accesses your seed or private keys.
Easy updates: Installers and auto-update mechanisms help you stay current with fixes and features.
Developer-friendly: Exposes a JSON-based transport used by Trezor Connect and Trezor Suite.

Quick install & setup

1. Download Bridge only from the official Trezor site or the authorized GitHub releases page.

2. Run the installer and follow the platform prompts. On macOS you might need to approve the app in System Preferences; on Windows, accept driver requests if they appear.

3. After installation the Bridge app runs in the background. Open Trezor Suite or a supported website and follow the on-screen connect flow. Always verify the site before granting access.

Security tips

Source verification: Confirm downloads come from trezor.io or the official repository.
Check checksums: When provided, compare installer hashes to official values.
On-device approval: Verify transaction details directly on your Trezor screen before approving.
Minimal permissions: Only allow browser access to Bridge for sites you trust and close sessions when finished.

Troubleshooting

Bridge appears offline: Restart the Bridge service from your system tray/menu bar or reboot your computer. Ensure you used a data-capable USB cable and that the device is unlocked.

Web wallet won't connect: Clear the browser cache or restart the browser. Some privacy extensions can block the connection — try disabling them temporarily.

Installer blocked: OS security settings may prevent unsigned apps; approve the installer in security preferences or use an official signed release.

FAQ

Is Bridge mandatory? No — some users rely on Trezor Suite or direct USB handling, but Bridge is the simplest way to ensure broad browser compatibility.

Can Bridge see my seed? No — Bridge only transports commands and signed responses; the seed remains inside the device’s secure element.