Trezor Bridge is the lightweight background service that lets your browser talk to your Trezor hardware wallet. Install it once, and your device can securely pair with Trezor Suite and compatible web apps without exposing private keys.
Important: Always get Trezor Bridge from the official source inside Trezor Suite or by typing the trusted domain in your browser. Avoid third-party mirrors and installers shared in forums or emails. After installation, restart your browser to allow the Bridge to register.
Trezor Bridge is a small, continuously running helper that establishes a secure communication channel between your computer’s web browser and your Trezor hardware wallet. Without this component, the browser cannot reliably detect the device, exchange messages, or request confirmations on the secure screen. Think of it as a translator: the Bridge understands how browsers speak and how your hardware wallet speaks, then relays messages without ever handling your seed or private keys. Those secrets never leave the Trezor.
The service was designed to be simple, fast, and robust. It launches at system startup, listens locally on a protected port, and only accepts requests from your machine. When Trezor Suite or a supported website needs to sign a transaction, the request is routed through the Bridge, forwarded to the device, and finalized only after you verify the details on the Trezor screen and confirm with the physical buttons. If you don’t approve, nothing gets signed—full stop.
Download the official installer for your operating system and follow the prompts. On macOS, you may be asked to approve the package in System Settings → Privacy & Security. On Linux, udev rules might be required so the browser can access the USB device.
After installation, restart your browser and open Trezor Suite. If the Bridge is running, Suite will automatically detect your Trezor model. You can also visit a supported web app and look for the “device connected” indicator.
Connection loops are usually solved by restarting the Bridge, trying a different USB cable, or closing other wallet apps that may be holding the port. Keep your system time correct and ensure that restrictive antivirus tools aren’t blocking local connections.
The Bridge does not store keys, seeds, or account data. It merely forwards requests. Sensitive actions occur on the Trezor device where you can inspect addresses and amounts before approving.
When running, Trezor Bridge exposes a local service that browsers can reach without needing insecure plugins. This architecture avoids legacy browser extensions that had limited USB access, and it keeps the attack surface minimal by operating only on localhost. The Bridge multiplexes requests, so multiple tabs or apps can talk to a single device without clashing. If you unplug your Trezor, the Bridge will simply idle and wait for the next session.
Updates are straightforward. When new firmware or Suite features arrive, a refreshed Bridge release may accompany them to ensure compatibility. Installing the new version over the old one is typically enough. Because the project’s behavior is transparent, the community can inspect how connections are established, which helps maintain a strong trust model across platforms.
With these steps, Trezor Bridge becomes the quiet, dependable link that lets you manage coins, sign messages, and interact with modern crypto tools while keeping private keys isolated in your hardware wallet. For newcomers, the setup typically takes a few minutes. For experienced users, it’s a set-and-forget service that simply works in the background, bridging browsers and secure hardware.