What is Trezor Bridge?
Trezor Bridge is the official communication layer between your hardware wallet and your desktop browser or application. It acts as a secure local service that allows applications like Trezor Suite to detect, connect, and interact with your device without compromising security. Whether you’re signing transactions, verifying addresses, or updating firmware, Trezor Bridge ensures encrypted, authenticated communication at all times.
Installation Guide
- Visit the official Trezor Bridge page.
- Download the correct version for your OS (Windows, macOS, or Linux).
- Run the installer and follow on-screen instructions.
- Restart your browser and reconnect your Trezor device.
Once installed, Trezor Bridge runs silently in the background. Applications automatically detect its presence, ensuring seamless operation without plugins or extensions.
How Trezor Bridge Works
Trezor Bridge serves as a secure middleware that communicates via HTTPS and local WebSocket channels between your browser or desktop client and the hardware wallet. It eliminates the need for outdated browser plugins and maintains strong cryptographic verification. Each request made to the Bridge is validated and signed, ensuring end-to-end integrity of communication. The Bridge is open-source, with code hosted publicly at trezord-go on GitHub for transparency and auditability.
Developer Integration
Developers can integrate directly with Trezor Bridge to build custom wallets, exchanges, or auditing tools. The Trezor Connect library provides an API to handle device communication, while Bridge serves as the local connection handler. When building integrations, it’s essential to maintain user consent flows and proper error handling for disconnected devices or outdated firmware.
TrezorConnect.init({
manifest: { email: 'dev@yourapp.com', appUrl: 'https://yourapp.com' }
});
TrezorConnect.getDeviceState()
.then(res => console.log(res))
.catch(err => console.error(err));
Bridge runs as a background service on port 21325. Developers can listen for status changes or logs to improve user experience and debugging.
Troubleshooting Connection Issues
- Ensure Trezor Bridge is installed and running.
- Check your browser’s permissions for USB or WebUSB access.
- Disable conflicting drivers or outdated versions of Bridge.
- Restart your computer and reconnect your Trezor.
- Verify your firmware from the Firmware page.
If the device still isn’t recognized, you can view Bridge logs for diagnostic purposes or reinstall the latest version from the official website.
Security Features
Security is the cornerstone of Trezor Bridge. Every release is digitally signed and verified. The binary executables are distributed only from official sources, ensuring protection against tampering. It uses encrypted channels, strict CORS policies, and local authentication to verify legitimate device requests. Always download Bridge only from trezor.io to maintain security integrity.
Best Practices
Always confirm all actions on your Trezor device screen before approving. Never run unsigned binaries or connect your device on public computers. Keep your firmware updated from the official firmware page. Developers should sign all custom software and maintain reproducible builds.
FAQs
1. What is Trezor Bridge used for?
It securely connects your Trezor hardware wallet to your browser or desktop app. Without it, Trezor Suite or third-party apps can’t communicate with your device.
2. Do I need Bridge on all devices?
Yes, install Bridge on every computer you use with your Trezor. For mobile apps, use WebUSB or Bluetooth integrations.
3. Is Bridge safe?
Yes. Bridge binaries are digitally signed, open source, and verified by the Trezor team. Always download from official links.
4. What if Bridge stops working?
Restart your system, ensure no older versions are running, and reinstall from trezor.io/bridge.
5. Can developers extend Bridge?
Developers can build on top of the open-source project trezord-go for custom integrations or debugging tools.