Trezor® Bridge Guide — Secure Connection for Your Hardware
Trezor Bridge is the lightweight local app that reliably connects your Trezor hardware wallet to desktop and web applications. It removes compatibility friction, ensures encrypted local communication, and keeps private keys on the device where they belong. This guide explains what Bridge does, how to install it, and the best practices to keep your crypto safe.
Why Bridge?
Browsers and operating systems vary. Bridge offers a consistent, tested channel for USB communication, so Suite and Web3 apps reliably detect and interact with your Trezor device.
Local & Encrypted
Bridge runs locally and uses encrypted channels. Requests are relayed without exposing sensitive material externally — signing happens on-device only.
Signed Releases
Official Bridge installers are signed. Verifying signatures before installation prevents tampered downloads and strengthens supply chain security.
Quick: How Bridge Works
Bridge acts as a trusted messenger between your browser or desktop app and your Trezor device. When an app requests a signature or account data, the request goes to Bridge, Bridge passes it to your Trezor, you confirm on the device, and the signed response returns — all locally.
Install & First Connection
Download the correct Bridge package for Windows, macOS, or Linux. Run the installer, allow permissions if prompted, and start Bridge. Plug in your Trezor and open Trezor Suite or a compatible app. Grant the browser permission to talk to Bridge when requested.
Troubleshooting
If your device is not detected: try a different USB cable or port, restart Bridge, reboot the computer, or test another browser. Avoid USB hubs during initial troubleshooting. Ensure firmware and Bridge are up-to-date.
Developer Integration
Developers can interact with Bridge APIs to support secure device access in desktop and web workflows. Use official docs, respect user permissions, and always recommend signed Bridge downloads to end users.
Security — What to Know
- Private keys never leave the device. Bridge only relays requests and responses.
- Verify signatures. Check installer checksums and signatures before installing Bridge.
- On-device verification. Always confirm addresses, amounts, and origin shown on your Trezor screen.
- Minimal privileges. Bridge requests only the permissions it needs to operate.
- Open-source. The community can audit code, which increases transparency and trust.
- Local-first design. No private data relayed to remote servers by Bridge.
Frequently Asked Questions
Not always — some modern browsers support direct device access, but Bridge remains the most compatible and reliable option across platforms.
Yes — when you download the official, signed release and verify the checksum. Never install Bridge from unknown mirrors or third-party links.
Windows, macOS, and many Linux distributions are supported. Check the official download page for exact package and OS requirements.