Trezor Bridge acts as a local communication layer between your Trezor hardware wallet and desktop/browser applications. It runs on the user’s machine and facilitates encrypted, direct communication so signing and management tasks occur with the private keys never leaving the device.
By isolating device communication to a local process, Bridge simplifies browser compatibility and removes the need for older browser extensions while preserving the hardware wallet's strong security model.
Trezor Bridge runs as a small local HTTP-like server (or daemon) on the user’s computer. Desktop apps and web pages (when allowed) communicate with that local server which then relays commands to the Trezor device over USB. This approach avoids exposing device interfaces over the network and keeps traffic local to the machine.
Newer Trezor devices and modern browsers support WebUSB/WebHID which reduce the need for an external bridge; however, some setups still use Bridge or the lightweight trezord-go daemon to maintain compatibility with older environments or specific workflows.
Bridge itself is a facilitator — the private keys remain inside the Trezor device. Security depends on using official releases, verifying binaries, and ensuring the host OS is secure. Running software from the official Trezor distribution and keeping everything updated are basic but essential practices.
Trezor has previously announced plans to deprecate the standalone Bridge in favor of integrated approaches (Trezor Suite, WebUSB/WebHID and trezord-go) — follow the official guidance for uninstall and migration steps to avoid compatibility problems.
Users should migrate to the latest Trezor Suite desktop/web app or use platform-specific tooling advised by Trezor. When uninstalling Bridge, follow OS-specific instructions (macOS, Windows, Linux) provided on the official support pages to ensure a clean transition.
If a problem persists, consult official documentation or open a support ticket. Never share your seed, recovery phrase, or PIN with support staff — legitimate support will never ask for those.
Below are the primary official pages and repositories you can rely on for downloads, migration notes, code, and policies.
Use these links to get the latest installers, migration steps, and developer source code.