Trezor Bridge (Optional) - How to Install Trézor Bridge if USB

Your complete guide to secure connectivity with your Trezor Hardware Wallet

What is Trezor Bridge?

Trezor Bridge is a communication interface that allows your browser to securely connect with your Trezor Hardware Wallet. When USB connection is not supported directly by the browser (especially on Firefox or older systems), Trezor Bridge acts as a trusted relay between your device and your computer.

Accessing Trezor.io/start is the recommended method for first-time setup. Whether you’re using Trezor Suite or just want to securely connect to your device for signing transactions or checking your balance, Trezor Bridge can enhance compatibility and reliability.

Why Use Trezor Bridge?

Modern browsers sometimes restrict USB API access. While WebUSB is available on Chrome, many users still need Trezor Bridge to make things work seamlessly—especially on Linux or custom OS setups.

Compatible Devices & Browsers

Trezor Bridge works on Windows, macOS, and Linux, and supports Chrome, Firefox, and Brave browsers.

When is Bridge Required?

If your browser shows a "Device Not Detected" error on Trezor.io/start, or if you experience intermittent connection problems, installing the bridge is likely the solution.

Installing Trezor Bridge

Step-by-Step Installation Guide

Step 1: Visit the Official Site

Open your browser and go to Trezor.io/start. It will detect your OS and automatically prompt you to download the right version of Trezor Bridge.

Step 2: Download & Install

Click “Download Trezor Bridge”. After downloading, follow on-screen instructions to install. On macOS, you may need to allow the installation under System Preferences → Security & Privacy.

Step 3: Restart Browser

After installation, close and reopen your browser. Revisit Trezor.io/start to verify your device is now recognized.

Optional: Use Trezor Suite Instead

If you’re using Trezor Suite (desktop app), Trezor Bridge is not required. Suite includes all necessary drivers and tools to manage your wallet independently.

Bridge vs. WebUSB vs. Suite

There are three ways to interact with your Trezor wallet:

1. WebUSB (in-browser)

Fast and modern, but only supported in Chromium-based browsers like Chrome and Edge.

2. Trezor Bridge

Best for compatibility. Required if using Firefox or if WebUSB is blocked.

3. Trezor Suite

A standalone app with built-in device recognition and enhanced privacy features. Includes full wallet management tools and Trezor Login functionality.

Troubleshooting Common Bridge Issues

Device Still Not Recognized?

Make sure the cable is original and the USB port functions correctly. Try different ports or reboot the system.

Bridge Not Starting?

Check if the process is running in the background. On Windows, open Task Manager → Background Processes → "trezord". Restart if needed.

Browser Blocking Connection

Disable conflicting extensions (like anti-virus browser guards) and ensure Trezor domains are whitelisted.

Frequently Asked Questions

1. What does Trezor Bridge do?
It allows your Trezor wallet to securely communicate with your browser, especially when WebUSB is not available.
2. Is Trezor Bridge safe to install?
Yes. It is official software from Trezor. Download only from Trezor.io/start to ensure security.
3. Do I need Bridge if I use Trezor Suite?
No. Trezor Suite includes everything needed to connect and manage your device without installing Bridge.
4. Can I uninstall Bridge later?
Yes. If you're only using the Trezor Suite app, Bridge is not required and can be safely removed.
5. Why is my Trezor not detected even after installing Bridge?
Ensure browser restarts, system permissions, and cables are all working. Also check antivirus settings and try a different browser.