Trezor Bridge — Getting Started Guide

What is Trezor Bridge?

Trezor Bridge is a small background application that allows your computer and web apps to communicate with a Trezor hardware wallet. It acts as a secure transport layer that relays messages between the Trezor device and the Trezor Suite (or supported web wallets), enabling signing of transactions and read-only queries while keeping private keys safely on the device.

In recent years Trezor has integrated much of this connectivity into Trezor Suite and added direct browser support via WebUSB. Because of that, the standalone Bridge is being deprecated in some setups and users are encouraged to use the official Suite or the supported browser flows when possible. If you rely on the standalone Bridge for legacy workflows, follow the instructions in this guide and pay attention to the deprecation notes so you can migrate cleanly.

Before you start — prerequisites

Make sure you have your Trezor device, a USB cable, and a computer that meets basic OS requirements (Windows, macOS, or Linux). Use an official USB cable, connect directly to your computer (avoid untrusted hubs), and ensure you download software only from the official Trezor website or verified release sources.

Important: Deprecation & migration notes

Trezor has announced deprecation in some cases of the standalone Bridge, steering users toward Trezor Suite and WebUSB-based connections. If you have a legacy Bridge installation, consider uninstalling it and switching to the Suite for improved privacy, automatic updates, and integrated firmware checks.

Troubleshooting common issues

Problems connecting are often caused by one of these: an outdated Bridge version, blocked USB access in the browser, a bad/loose cable, or another app claiming the device. Steps that usually resolve connection issues:

• Restart your computer and reconnect the device.
• Try a different USB cable and port (preferably USB-A or USB-C direct on the machine).
• Make sure Bridge is running (check system tray or background services) or use WebUSB-enabled browsers (Chrome/Edge) if supported.
• Update Trezor Suite to the latest release and verify the installer signature if in doubt.

Security best practices

Always assume your desktop and browser may be targeted by phishing. A hardware wallet's security relies on the user verifying information on the device screen. Never enter your recovery seed into any application or website — the seed is offline and must remain secret. Keep firmware and Suite updates official and verified, and if you must export transaction data, prefer read-only exports that do not expose private keys.

Advanced usage & developer notes

Developers and power users sometimes interact directly with the transport layer (Bridge, WebUSB or HID). If you develop integrations, ensure you implement strict origin checks, keep dependencies up to date, and never request a seed or private key. Test against emulators and follow Trezor’s API documentation.

Summary & next steps

Use Trezor Suite as your primary application for a simple, secure experience. If you need the standalone Bridge for specific legacy workflows, keep it up to date and observe migration notices from Trezor. Frequently verify installer signatures and prefer official channels for downloads. With these practices you’ll maintain a secure connection between your computer and your Trezor device and keep your crypto safe.

Ready to start? Download the official software, verify the installer, plug in your Trezor, and follow on-device prompts — and welcome to a safer way to manage crypto.