Trezor Bridge is a lightweight, background-running software application developed to facilitate direct communication between Trezor hardware wallets and computer browsers. Many browsers no longer support traditional browser extensions for hardware wallet communication. To solve this compatibility issue, Trezor created Bridge as a secure, standalone communication layer that ensures your device interacts correctly with compatible desktop applications.
When installed, Trezor Bridge helps your browser detect the hardware wallet, authorize actions, and share encrypted data safely between your device and the computer. It does not store user data, private keys, or transaction details. Instead, it functions purely as a communication pipeline, always ensuring the final confirmation occurs on your Trezor device—preserving the hardware-level security that Trezor wallets are known for.