Trezor Bridge
The essential communication layer connecting your hardware wallet to the decentralized web. Secure, invisible, and indispensable.
What is Trezor Bridge?
Trezor Bridge is a lightweight, background software application designed to facilitate secure communication between your Trezor hardware wallet and your web browser. Unlike traditional browser extensions, Trezor Bridge operates as a standalone service on your operating system, creating a direct and encrypted channel for data transmission.
In the early days of hardware wallets, communication was handled via browser plugins. However, as browser security standards evolved and plugins became deprecated, a more robust solution was required. Trezor Bridge was developed to fill this gap, providing a protocol-agnostic way to interact with the blockchain. It runs quietly in the background (as a daemon process named trezord), listening on a local port (typically 21325) for requests from authorized web applications like Trezor Suite or third-party wallets.
By moving the communication logic out of the browser and into a dedicated system process, Trezor Bridge eliminates many of the compatibility issues associated with web-based USB connections (WebUSB). It ensures that your private keys never leave your device, while allowing the interface to display your balances and sign transactions efficiently.
Key Features
Engineered for security, designed for invisibility.
Secure Communication
Establishes an encrypted local connection between your device and browser, preventing man-in-the-middle attacks and ensuring data integrity during transaction signing.
Cross-Browser Compatibility
Works seamlessly across all major browsers including Google Chrome, Mozilla Firefox, Microsoft Edge, and Safari, without requiring specific browser extensions.
Automatic Updates
The software includes a built-in updater that ensures you are always running the latest version with the most recent security patches and protocol improvements.
Lightweight & Fast
Optimized for minimal system resource usage. It runs silently in the background, consuming negligible CPU and RAM while waiting for device interaction.
Privacy Focused
Designed with privacy by default. Trezor Bridge does not collect personal data, track your usage, or send telemetry to remote servers without your explicit consent.
Easy Installation
A simple, one-time installation process sets up the bridge for all supported browsers on your system. No complex configuration is required.
How It Works
The bridge acts as a translator between the raw USB signals from your device and the JavaScript running in your web browser.
Download & Install
Download the installer for your operating system. Run the setup wizard to install the trezord service. This only needs to be done once.
Connect Your Device
Plug your Trezor hardware wallet into your computer via USB. The Bridge service automatically detects the hardware connection.
Bridge Detection
When you visit a compatible website (like Trezor Suite Web), the site polls the local bridge service (http://127.0.0.1:21325). The Bridge responds, confirming it is active.
Secure Interaction
The website sends transaction data to the Bridge, which forwards it to your device. You confirm on the device, and the signed data is returned via the Bridge to the browser.
Why You Need Trezor Bridge
For users of Trezor hardware wallets, Trezor Bridge is not just an optional add-on; it is a critical component of the security infrastructure. While some modern browsers support the WebUSB standard which allows direct device connection, this technology is not universally implemented and can sometimes be unstable depending on the operating system configuration.
Trezor Bridge provides the most reliable and compatible method for connecting your device. It replaces the outdated browser extension method, which was phased out due to changes in browser architecture. By running as a native application, the Bridge bypasses the limitations of the browser sandbox, allowing for more robust communication with the USB hardware.
Furthermore, using the Bridge enhances your security posture. It validates the origin of requests, ensuring that only allowed domains can communicate with your device. This helps prevent phishing attacks where malicious sites might attempt to trick you into signing transactions. For the smoothest experience with Trezor Suite, third-party wallets like MetaMask (when connected to Trezor), and other DeFi applications, installing Trezor Bridge is the recommended best practice.
Get Started with Trezor Bridge
Select your operating system to download the latest version.
Windows
Windows 10, 11 (64-bit)
macOS
10.15 and later
Linux
Ubuntu, Fedora, Debian
Ready to secure your assets?
Ensure seamless communication between your wallet and the blockchain today.