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.
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:
It replaces older connection methods like browser extensions, which have historically been more vulnerable to phishing and impersonation attacks.
Before Trezor Bridge®, hardware wallet communication relied mostly on browser extensions such as Trezor Chrome extensions. As browser security improved 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:
Because of these advantages, Trezor Bridge has become the recommended and default connection method for all Trezor users on desktop systems.
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.
The browser sends a command to Bridge (e.g., "Detect device" or "Sign transaction").
Bridge authenticates the request and ensures it comes from trusted sources.
The command is forwarded to the hardware wallet via USB.
The user approves actions on the Trezor device itself.
Bridge relays the signed and verified response back to the browser.
This entire process ensures that private keys never leave the hardware wallet, and no sensitive data is exposed.
Security and compatibility at the core
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:
Bridge never stores or transmits private keys.
Because many modern browsers restrict USB or HID communication from web pages, Bridge ensures device connection works smoothly across:
No browser extensions needed!
Whether you are using your Trezor for managing assets, signing transactions, or interacting with third-party dApps, Bridge ensures the communication is secure, reliable, and effortless.
© 2024 Trezor Bridge® - Developed by SatoshiLabs