Overview of Trezor Bridge
Trezor Bridge is a small local service that securely relays communication between Trezor hardware wallets and wallet applications. It ensures keys remain offline while providing consistent cross-platform compatibility.
Why Bridge Matters
Browser restrictions and varying USB implementations can create an inconsistent experience. Trezor Bridge provides a trusted local endpoint that standardizes communication and ensures all cryptographic operations stay on-device.
Key Features
Cross-platform: Windows, macOS, Linux
Automatic device detection & reconnection
Local-only — private keys never leave device
Lightweight background process
Developer-friendly API & documentation
Signed releases with checksums
Installation Steps
- Windows: Run the installer and approve drivers.
- macOS: Use System Preferences → Security if blocked.
- Linux: Install packages and adjust udev rules as needed.
Security Guidelines
- Download only from Trezor.io/start
- Keep OS and browser updated
- Verify device prompts before confirming transactions
- Limit trusted applications
Troubleshooting
- Device not detected? Reconnect or restart Bridge.
- Browser issues? Clear site data and restart browser.
- Installation blocked? Adjust OS security settings.
Advanced Workflows
Bridge can integrate with air-gapped or offline workflows for secure signing. Unsigned transactions can be prepared offline and signed on a Bridge-enabled device for maximum security.
Benefits
- Reliable cross-platform communication
- Keys remain secure on hardware
- Simplifies web & desktop wallet usage
Considerations
- Requires installation on each device
- Small local attack surface
- Periodic updates needed for OS changes
FAQ
Is Trezor Bridge required?
For browser wallets and consistent experience, yes. Trezor Suite may bypass it on some platforms.
Can it run on Linux?
Yes — follow udev and permission instructions.
Is it safe?
Yes — keys stay on-device. Bridge only handles secure communication.