What is Trezor Bridge?
Trezor Bridge is a lightweight local application that enables communication between your web browser and a Trezor hardware wallet. It acts as a secure translator so browser-based wallet interfaces (like Trezor Suite or third-party wallets) can safely interact with your device.
Why it matters
While USB and WebUSB support varies across browsers and platforms, Trezor Bridge provides a consistent cross-platform channel. Bridge isolates device traffic from websites and avoids exposing raw device APIs directly to the web, reducing attack surface and increasing reliability.
Quick install (recommended)
- Download the official Bridge installer from Trezor's site and run it.
- Allow the app to install a small local service — it runs silently in the background.
- Open your wallet interface (Trezor Suite or an approved web app) and connect your Trezor device.
Troubleshooting common problems
Browser can't detect device
Ensure Bridge is running: look for a small tray/menubar icon or check system services. Some browsers require explicit permission for USB devices — accept prompts and try reconnecting the cable.
Installation fails
On macOS you may need to allow the installer under System Settings → Security & Privacy. On Linux, install the package for your distro and ensure your user is allowed to access USB devices (udev rules).
Security best practices
- Download Bridge only from the official Trezor website or verified distribution channels.
- Do not install unknown browser extensions that claim to manage your Trezor.
- Keep your firmware and Bridge client up to date; updates often patch bugs and improve compatibility.
Advanced: manual connection & logs
If you are debugging connectivity, Bridge exposes a local HTTP port for diagnostics. Check logs stored by the Bridge service to find USB permission errors, device disconnects, or conflicting software.
Frequently asked questions
Do I need Bridge with Trezor Suite?
On many systems Trezor Suite can communicate directly, but Bridge ensures compatibility across a broader range of browsers and older OS versions.
Is Bridge safe?
Yes—Bridge runs locally and does not transmit wallet data to external servers. Always verify the installer’s signature when available.
Conclusion
Trezor Bridge is a small but vital tool that smooths the connection between web-based wallet interfaces and your physical Trezor device. It reduces cross-browser issues, centralizes USB handling, and improves user experience without sacrificing security. Install it from official sources, follow the troubleshooting steps above if you hit a snag, and always keep both your device firmware and Bridge client current.