Trezor Bridge® | Official Trezor Connection Software

Trezor Bridge is a lightweight, secure middleware application that enables your Trezor hardware wallet to communicate with web browsers and wallet interfaces. Unlike the old-school browser extensions or direct USB access that modern browsers restrict, Trezor Bridge provides a trusted local connection so you can manage your crypto safely and reliably.

At its core, Trezor Bridge runs as a background service on your computer. When installed, it listens on a local port (often 127.0.0.1 with a specific port number) and accepts secure requests from browser-based wallet apps or Trezor Suite web interfaces. The browser can’t directly access USB hardware for security reasons, so Bridge acts as a translator between the user interface and your connected Trezor device.

Why Trezor Bridge Matters

Without Trezor Bridge, your browser might not recognize your hardware wallet, stopping you from accessing balances, sending transactions, or even setting up your device through trezor.io/start. Bridge ensures reliable USB device detection, cross-browser compatibility (including Chrome, Firefox, Edge, and Brave), and secure communication channels that protect against unauthorized access.

Bridge doesn’t touch your private keys, seed phrases, or PINs — these always remain safe inside the hardware device. Bridge simply relays structured commands like “fetch your public address” or “sign this transaction,” and then sends the result back to the browser interface. Sensitive actions must be confirmed manually on the Trezor device itself, which preserves your offline-security model.

Installation: Getting Started with Trezor Bridge

Installing Trezor Bridge is straightforward:

Go to the official Trezor download page and pick the correct installer for your operating system (Windows, macOS, or Linux).

Run the installer and follow the prompts — on macOS you may need to allow Bridge access in Security & Privacy settings.

Restart your browser after the installation completes.

Plug in your Trezor device via USB; Bridge should automatically detect it.

Visit Trezor Suite Web or another compatible wallet; your browser will communicate with Bridge to allow access.

Once installed, Bridge runs quietly in the background with minimal system impact and doesn’t collect personal data or analytics. It’s designed to use a secure, encrypted protocol so your actions remain private and safe throughout.

When Do You Need Trezor Bridge?

You need Trezor Bridge primarily when accessing your hardware wallet through a web browser or third-party wallet app. If you use the Trezor Suite desktop application, Bridge isn’t always necessary because the desktop version handles communication internally. However, for browser-based setups and certain integrations (like MyEtherWallet or MetaMask), Bridge is still essential.

In short, Trezor Bridge is the invisible link that makes modern hardware wallet interactions possible — secure, smooth, and compatible across platforms.