Trezor Bridge — What It Is, How To Install It, and Security Tips
```Trezor Bridge is the official background application that enables secure communication between your Trezor hardware wallet and web-based interfaces such as Trezor Suite or the web-based setup at Trezor.io/Start. Unlike browser extensions that can be fragile or limited by browser updates, Bridge runs locally on your computer and acts as a trusted conduit so your browser can talk safely to the USB-connected device.
Why Trezor Bridge exists
Browsers restrict direct access to USB devices for security reasons and not all browsers implement the same APIs consistently. Trezor Bridge resolves those differences by providing a small, cross-platform service that speaks directly to the device over USB and exposes a secure local endpoint the browser can use. This keeps cryptographic operations on the Trezor device and avoids exposing private keys to the web environment.
Supported platforms and requirements
Trezor Bridge supports Windows, macOS, and Linux. System requirements are minimal: a modern operating system, administrative or permission-level access for installation, and an internet connection to download the latest Bridge installer from the official site. Always download Bridge from trezor.io to prevent tampered installers.
How to install Trezor Bridge
- Download: Visit trezor.io/start and choose the official Bridge installer for your OS.
- Run the installer: On Windows, run the .exe and accept the installer prompts. On macOS, open the .dmg and drag the Bridge app to Applications (or follow the specific installer steps). On Linux, follow the distribution-specific package instructions.
- Grant permissions: The installer may request elevated privileges to register the service. This is normal—Bridge runs as a local service to handle USB access securely.
- Connect your device: With Bridge running, plug in your Trezor and open Trezor Suite or the Start page. The browser should detect the Bridge endpoint and allow interaction with the device.
Common troubleshooting
If your device is not recognized, try these steps: verify Bridge is running (check system tray or process list), use the official USB cable, try a different USB port (avoid unpowered hubs), and restart your browser. On Windows, make sure you have the latest USB drivers; on macOS, confirm you accepted any system prompts to allow USB access. Reinstalling the Bridge installer often resolves corrupted installs.
Security considerations
Trezor Bridge is designed so that private keys never leave the hardware device. All signature requests and confirmations happen on the Trezor display itself, so even if a web page or local application is compromised, the device prevents unauthorized transactions without your physical confirmation. Always verify the transaction details on the device screen before approving. Never enter your recovery seed into any software — Bridge or otherwise.
Updating and verifying Bridge
Keep Bridge updated. Updates can include compatibility fixes and security improvements. Download updates only from the official site. If you are unsure whether the Bridge process is genuine, check the installer’s digital signature and compare file hashes published by Trezor’s official channels.
Advanced use and alternatives
Advanced users on Linux can run Bridge as a package or even use systemd service configurations. If you prefer not to use Bridge, the Trezor Suite desktop application includes built-in device support and does not always require Bridge for local installs. However, for browser-based interactions, Bridge remains the recommended method.
Final thoughts
Trezor Bridge is a small but essential piece of the Trezor ecosystem that ensures secure, reliable communication between your hardware wallet and web applications. Installing it from the official site, keeping it up to date, and following basic troubleshooting steps will give you a smooth setup experience. Remember: trust your device display, verify all transaction details, and never expose your recovery seed.
Download Trezor Bridge ```