Trezor Bridge (displayed here as “Trezor Bridgerezor Bridge” for clarity) is the official, lightweight application that provides a secure communication channel between your Trezor hardware wallet and the desktop/browser world. It replaces older browser plugin approaches and delivers a modern, cross-platform way to use decentralized applications, wallets, and services while keeping private keys safe on-device.
As Web3 matures, users interact with an expanding set of applications — decentralized exchanges, NFT marketplaces, lending platforms, and analytics tools. These interactions require a reliable way to sign transactions from your hardware wallet without exposing sensitive secrets to your computer. Trezor Bridge ensures that all signing happens on the hardware device itself and that communication between device and application is encrypted and authenticated.
When you connect a Trezor device and initiate an action in a supported wallet or dApp, the request is routed through Trezor Bridge. The bridge forwards the request to the hardware wallet, where transaction details are shown on the device’s screen. You physically confirm or reject the action. After approval the signed data is returned via the bridge and broadcast to the network. This sequence prevents local malware or browser exploits from accessing your private keys.