Trezor Bridge — Definitive Guide & Reference

Last updated: October 2025

Trezor Bridge is the essential software layer that connects your Trezor hardware wallet with your computer and browser applications such as Trezor Suite or third-party crypto wallets. This guide provides a comprehensive reference for understanding, installing, troubleshooting, and securely using Trezor Bridge.

What is Trezor Bridge?

Trezor Bridge acts as a secure communication protocol enabling the interaction between your hardware wallet and your web browser. Unlike older USB communication methods, Bridge runs as a background process on your computer to ensure smooth and reliable data transfer.

Key Features

• Enables secure communication with Trezor devices over USB
• Supports Windows, macOS, and Linux platforms
• Facilitates firmware updates and transaction signing
• Runs silently in the background for seamless usage

Why You Need Trezor Bridge

When using your Trezor hardware wallet, your browser cannot directly access the device due to security restrictions. Trezor Bridge bridges this gap by handling USB communication outside the browser environment while still integrating smoothly with browser apps.

“Trezor Bridge ensures that your hardware wallet remains isolated and secure while interacting with modern web technologies.”

How to Install Trezor Bridge

Follow these steps to download and install Trezor Bridge on your computer:

1. Visit the official Trezor website at https://trezor.io/start.
2. Download the Trezor Bridge installer compatible with your operating system.
3. Run the installer and follow the on-screen instructions.
4. After installation, restart your browser and connect your Trezor device.

System Requirements

• Windows: Windows 7 or newer
• macOS: macOS 10.12 Sierra or newer
• Linux: Most modern distributions (64-bit recommended)
• Browser: Latest versions of Chrome or Firefox

Troubleshooting Common Issues

Trezor Bridge Not Detected

If your browser does not detect Trezor Bridge, try the following steps:

• Ensure Trezor Bridge is installed correctly.
• Restart your computer and browser.
• Check if any firewall or antivirus software is blocking Bridge.
• Use a different USB port or cable.
• Try updating your browser to the latest version.

Browser Compatibility Issues

While Trezor Bridge supports most modern browsers, the best compatibility is found with:

• Google Chrome
• Mozilla Firefox

Internet Explorer and Microsoft Edge Legacy are not supported.

Security Best Practices

To keep your Trezor Bridge and device secure:

• Always download Bridge from the official Trezor website.
• Keep your Trezor firmware updated.
• Use strong passwords and 2FA on your crypto accounts.
• Avoid using Trezor Bridge on public or untrusted networks.
• Regularly check for software updates.

Advanced Usage & Developer Info

For developers interested in integrating Trezor Bridge into their applications, the Bridge exposes a local HTTP API for communication. Documentation and developer tools are available on the official Trezor GitHub repository.

// Example: Checking Trezor Bridge version via command line
trezorctl --bridge-version
    

Bridge API

The Trezor Bridge API allows applications to:

• Send commands to Trezor device
• Receive device responses
• Manage device firmware updates

Frequently Asked Questions (FAQ)

Q: Can I use Trezor Bridge on mobile devices?

A: No, currently Trezor Bridge is designed for desktop OS. Mobile users should use Trezor Suite mobile app or compatible wallets.

Q: Is Trezor Bridge safe to use?

A: Yes, it is developed by SatoshiLabs with strong security focus. Always ensure downloads are from official sources.

Q: What if Bridge stops working after a browser update?

A: Restart your computer and reinstall Bridge if necessary. Also check for Bridge updates.

Summary

Trezor Bridge is a vital piece of software that enables secure, seamless communication between your Trezor hardware wallet and your desktop environment. Understanding how to install, use, and troubleshoot it will ensure your crypto management remains smooth and safe.

Get Trezor Bridge

Disclaimer: Always follow official Trezor guidelines. This guide is for informational purposes only.