Secure Connection for Your Trezor Wallet
Trezor Bridge is the essential communication tool that securely connects your Trezor hardware wallet to your web browser and Trezor Suite.
What is Trezor Bridge?
Trezor Bridge is a lightweight application designed to facilitate communication between your Trezor hardware wallet and your web browser. In the past, browser plugins were used for this purpose, but as modern browsers have phased out support for these plugins, Trezor Bridge has become the standard, secure solution for hardware wallet connectivity.
It runs quietly in the background as a local process, creating a secure bridge that allows websites like Trezor Suite for Web and other compatible third-party wallets (such as MetaMask or MyEtherWallet) to detect and interact with your device. Without this software, your browser cannot "see" the USB device connected to your computer due to browser security sandboxing.
Why You Need Trezor Bridge
Seamless Connectivity
Eliminates connection issues by providing a direct, stable link between your USB hardware and web applications.
Enhanced Security
Operates locally on your machine without sending private keys or sensitive data over the internet. Your keys never leave the device.
Broad Compatibility
Works across all major browsers (Chrome, Firefox, Brave, Edge) without needing specific extensions for each one.
How It Works
Technically, Trezor Bridge is a communication daemon. When installed, it starts a local web server at http://127.0.0.1:21325. This local server listens for commands from authorized web pages.
When you visit a compatible wallet interface, the webpage sends a request to this local port. Trezor Bridge receives the request, translates it into the USB protocol that the Trezor device understands, and sends it to the hardware. The device then processes the request (e.g., signing a transaction) and sends the result back through the Bridge to the browser.
This architecture ensures that the complex USB communication logic is handled outside the browser environment, providing better stability and security.
Technical Specifications
- Protocol: HTTP/HTTPS (Localhost)
- Port: 21325
- Process Name: trezor-bridge / trezord
- Updates: Automatic background updates available
- Source: Open Source software
Key Features
One installation works for Chrome, Firefox, Safari, and more.
Runs silently in the system tray without interrupting your workflow.
Written in Go for minimal resource usage and maximum speed.
No data collection. Communication is strictly between your device and the local computer.
System Requirements
Installation Guide
Install
Run the installer file. On Windows, confirm the UAC prompt. On macOS, drag the icon to Applications. On Linux, install the .deb or .rpm package.
Connect
Once installed, refresh your browser page. The Trezor Bridge process will start automatically, and your device status should change to "Connected".
Security & Privacy
Security is paramount when dealing with cryptocurrencies. Trezor Bridge is designed with a "security-first" architecture. It only accepts connections from the local computer (localhost) and includes a whitelist of allowed origins to prevent malicious websites from scanning for your device. Furthermore, all binaries are digitally signed by SatoshiLabs to ensure authenticity.
Always verify you are downloading from the official domain trezor.io to avoid phishing attempts.