The Trezor Bridge App is a small background software developed by SatoshiLabs, the creators of the Trezor hardware wallet. It acts as a communication link between your Trezor hardware wallet and your computer’s web browser. Without this bridge, your Trezor device cannot properly interact with wallet interfaces such as Trezor Suite or other compatible platforms.
In essence, the Bridge enables secure data transfer between your physical device and your desktop interface while keeping sensitive information like private keys and recovery seeds fully protected inside the Trezor hardware wallet.