Secure Connection for Your Trezor Hardware Wallet
Trezor Bridge is the essential communication tool that links your hardware device to your web browser. Experience seamless, secure, and private cryptocurrency management.
*Always download software directly from trezor.io to ensure authenticity.
What is Trezor Bridge?
Trezor Bridge is a lightweight application designed to run in the background of your computer. Its primary function is to facilitate communication between your Trezor hardware wallet and your web browser. Without this bridge, modern web browsers cannot directly communicate with USB devices due to security sandboxing protocols.
Originally, this functionality was handled by browser plugins, but as browser security standards evolved, the need for a standalone, system-level bridge became apparent. Trezor Bridge solves this by creating a local server (running on localhost) that securely proxies commands from the Trezor Wallet web interface to the physical device connected via USB.
This architecture ensures that your private keys never leave the device, while still allowing you to interact with decentralized applications (dApps), manage your portfolio, and sign transactions conveniently through a web interface. It is a critical component of the Trezor ecosystem, ensuring that the "cold storage" model remains intact even when connected to an online computer.
Security First Architecture
The bridge operates strictly on your local machine, ensuring no data is ever intercepted by third parties during the transmission process.
Key Features
Why Trezor Bridge is the industry standard for hardware wallet communication.
Secure Protocol
Uses a proprietary communication protocol that verifies the authenticity of the device and the software, preventing "Man-in-the-Middle" attacks. It ensures that the device you are talking to is a genuine Trezor.
Cross-Platform
Fully compatible with major operating systems including Windows, macOS, and Linux (DEB and RPM). It provides a consistent experience regardless of your preferred environment.
Automatic Updates
The software checks for updates to ensure you always have the latest security patches and feature improvements without manual intervention for every minor release.
Lightweight & Efficient
Designed to have a minimal system footprint. It runs silently in the background as a service (trezord) and only activates when a request is made to the device.
Broad Browser Support
Enables Trezor functionality on Chrome, Firefox, Brave, and other Chromium-based browsers, bypassing the limitations of WebUSB where necessary.
Developer Friendly
Provides a standardized API for third-party wallet developers to integrate Trezor support into their own applications, expanding the ecosystem of compatible wallets.
How It Works
Connection Initiation
When you connect your Trezor device via USB, the operating system recognizes it. Trezor Bridge (running as the 'trezord' process) detects this connection immediately.
Localhost Communication
When you visit a compatible website (like Trezor Suite web), the browser sends a request to http://127.0.0.1:21325. This is the local port where Trezor Bridge listens.
Secure Handshake
The Bridge validates the request origin. If authorized, it passes the data to the USB device. The device then asks for your confirmation (PIN/Passphrase) on its physical screen.
Transaction Signing
Once you confirm on the device, the transaction is signed internally using your private keys. Only the signed transaction data is sent back through the Bridge to the browser to be broadcasted to the blockchain.
Installation & Setup Guide
Getting started with Trezor Bridge is a straightforward process. Follow these steps to ensure a secure setup.
Download
Visit the official Trezor Wallet website. The site will automatically detect if you need the Bridge and prompt the download.
Install
Run the installer file (.exe, .dmg, or .rpm/.deb). Follow the on-screen prompts. You may need to grant administrative privileges.
Refresh
Once installed, refresh your browser page. The "Connect your Trezor" screen should now detect your device instantly.
Security Warning
Never download Trezor Bridge from third-party file hosting sites. Always verify the URL is trezor.io before downloading any software related to your crypto assets.