SECURE CONNECTION LAYER

Trezor Bridge®

Connect Your Trezor to Web Browsers

Trezor Bridge® is a communication tool developed by SatoshiLabs that allows Trezor hardware wallets to connect seamlessly with supported web browsers and online wallet interfaces. As cryptocurrency adoption expands, secure interaction between hardware wallets and web applications has become essential. Trezor Bridge plays a crucial role in that process, acting as a secure communication layer between the user's computer, browser, and Trezor device.

Secure Communication

Ensures reliable and effortless communication for managing assets, signing transactions, and interacting with dApps.

No Browser Plugins

Eliminates the need for browser plugins, reduces attack surfaces, and provides a more stable experience across platforms.

Cross-Platform

Works seamlessly across multiple platforms and all major browsers without compatibility issues.

What Is Trezor Bridge®?

Trezor Bridge® is a lightweight software service that runs on your computer and enables direct communication between web-based wallet interfaces and your Trezor hardware wallet. Without Bridge, most browsers would not be able to detect or interact with the hardware device due to security restrictions.

It works silently in the background, enabling operations like:

Device detection
Firmware updates
Transaction signing
Account initialization
Secure communication between web apps and Trezor

It replaces older connection methods like browser extensions, which have historically been more vulnerable to phishing and impersonation attacks.

Why Was Trezor Bridge Created?

Before Trezor Bridge®, hardware wallet communication relied mostly on browser extensions such as Trezor Chrome extensions. As browser security evolved over the years, extensions became limiting and less secure. Additionally, many browsers dropped support for USB-enabled extensions altogether.

Trezor Bridge solves these issues by:

Allowing secure USB communication independent of browser restrictions
Eliminating vulnerabilities associated with browser plugins
Providing a unified, consistent experience across all major browsers
Offering better reliability and long-term compatibility
✗

Old Method

Browser Extensions

✓

New Method

Trezor Bridge

Because of these advantages, Trezor Bridge has become the recommended and default connection method for all Trezor users on desktop systems.

How Trezor Bridge Works

Trezor Bridge acts as a mediator. Once installed, it listens for requests from web interfaces (like Trezor Suite Web) and passes them securely to the connected hardware wallet.

1

The browser sends a command to Bridge (e.g., "Detect device" or "Sign transaction").

2

Bridge authenticates the request and ensures it comes from trusted sources.

3

The command is forwarded to the hardware wallet via USB.

4

The user approves actions on the Trezor device itself.

5

Bridge relays the signed and verified response back to the browser.

Maximum Security

This entire process ensures that private keys never leave the hardware wallet, and no sensitive data is exposed.

Key Features of Trezor Bridge®

Secure USB Communication

Bridge enables a secure channel that respects the hardware wallet's strict requirement: all sensitive actions must be confirmed on the physical device.

Protects against:

Unauthorized wallet access
Malicious web scripts
Browser-level attacks

Bridge never stores or transmits private keys.

Browser Compatibility Without Extensions

Because many modern browsers restrict USB or HID communication from web pages, Bridge ensures device connection works smoothly across:

Chrome

Firefox

Edge

Safari

Opera

Brave

This universal compatibility means users get a consistent experience no matter which browser they prefer, without needing to install separate extensions for each one.

Ready to Secure Your Crypto?

Download Trezor Bridge today and experience seamless, secure communication between your hardware wallet and web browsers.

© 2025 Trezor Bridge®. Developed by SatoshiLabs. All rights reserved.