What is Trezor Bridge?
Trezor Bridge is a small but essential software utility that allows your Trezor hardware wallet to communicate securely with supported web applications and browsers. Acting as a secure interface between your USB-connected device and Trezor Suite or third-party wallets, Trezor Bridge ensures smooth functionality and enhanced compatibility across platforms.
When installed, Bridge runs silently in the background, enabling your browser or desktop environment to detect and interact with your Trezor device without requiring complex configurations or browser extensions.
Key Features
- Seamless USB Communication: Bridge facilitates a secure, low-level communication channel between your hardware wallet and browser.
- Cross-platform Support: Works on Windows, macOS, and Linux with minimal setup.
- Automatic Detection: Allows supported apps to detect and interact with your Trezor without additional plugins.
- Secure Local Host Access: Bridge communicates over a localhost interface, ensuring no external servers can interfere.
- Lightweight & Efficient: Minimal system resources required. Runs silently in the background.
- Open Source: Transparent codebase allows for public review and security audits.
How to Install Trezor Bridge
Installing Trezor Bridge is straightforward. Below are step-by-step instructions to get you connected quickly.
- Visit the official Trezor website: trezor.io/bridge.
- Download the correct version for your operating system (Windows, macOS, or Linux).
- Run the installer and follow on-screen prompts.
- Restart your browser after installation.
- Connect your Trezor device via USB.
- Launch Trezor Suite or a supported web wallet — your device should now be recognized!
Linux Users: You may need to install USB udev rules to allow your system to detect the Trezor device.
Troubleshooting
If you run into problems using Trezor Bridge, try the following solutions:
- Bridge not detected? Ensure it’s installed and running in the background. Restart your browser or system.
- Device not found? Try a different USB cable or port. Make sure your device is unlocked.
- Using Linux? Install udev rules and restart your computer.
- Browser issues? Disable conflicting extensions, or try using a different browser.
- Update Trezor Suite: Keeping Trezor Suite and Bridge up to date ensures best compatibility.
Security Overview
Security is at the core of Trezor Bridge’s design. Here’s how it protects your assets:
- Local-Only Communication: Trezor Bridge only interacts with applications running on your machine through
localhost. No internet traffic is routed through the bridge itself. - No Access to Private Keys: Your private keys and seed phrases never leave the Trezor hardware device. Bridge only facilitates the connection.
- Confirm on Device: All sensitive operations (e.g. sending crypto, logging in) must be approved on the physical device screen.
- Signed Binaries: All official installers are digitally signed to prevent tampering. Only install from trezor.io/bridge.
- Open Source: The code is public and verifiable by anyone on GitHub.
Remember: Bridge helps connect, but your Trezor keeps the keys offline — where they belong.
Frequently Asked Questions
Is Trezor Bridge required?
Not always. Newer browsers support WebUSB, which may allow communication without Bridge. However, Bridge improves reliability and compatibility, especially for older systems or browsers.
Can Bridge steal my crypto?
No. Trezor Bridge does not have access to your private keys. All critical actions are confirmed on your Trezor device, not your computer.
How do I know Bridge is running?
It runs in the background silently. You can check your system’s task manager or activity monitor. Some Trezor-compatible apps will alert you if Bridge is missing.
Is Trezor Bridge open-source?
Yes. The source code is available on Trezor’s official GitHub. This transparency is a cornerstone of its trust model.
Does Trezor Bridge auto-update?
No. You must manually download and install updates. Always check