Trezor Bridge is the lightweight connection layer that lets your Trezor hardware wallet communicate with web browsers and desktop apps securely and reliably. Whether you're managing multiple accounts, confirming transactions, or backing up seed phrases, Trezor Bridge keeps the linkage between your device and your computer simple, fast, and focused on privacy and security.
At its core, trezor bridge provides a secure, low-level communication channel between Trezor hardware wallets and the host machine. By installing Trezor Bridge you enable web-based wallets and native apps to detect your device and request signatures without exposing your private keys. Trezor Bridge acts as a translator: it understands the USB or WebUSB stack of your operating system and exposes an API that legitimate wallet interfaces can use. This keeps the sensitive cryptographic operations isolated on the device while giving you smooth control and visibility.
Installing Trezor Bridge is straightforward. Download the installer from the official source, run it, and follow on-screen prompts. Once installed, connect your Trezor device and open your preferred wallet interface — the app or website will request permission to use Trezor Bridge. Confirm the connection on both the host and the device. If your browser supports WebUSB directly, you may be able to use Trezor without a separate Bridge install, but using Trezor Bridge ensures consistent behavior across browsers and platforms.
Keep your Bridge installation up to date, verify installers only from official channels, and make sure your device firmware is current. Never enter your recovery seed into a computer — seed entry belongs on the Trezor device itself or on a secure, offline method. When a wallet asks for confirmation, double-check transaction details on the device screen before approving. These habits, combined with using trezor bridge, will drastically reduce exposure to remote compromise.
If your browser doesn't detect the device, try restarting the browser, re-plugging the cable, or reinstalling Trezor Bridge. On systems with strict security settings, ensure that the bridge service has the necessary permissions. When multiple wallets are installed, close other apps that might be monopolizing the USB connection. If problems persist, consult official support resources or community guides for step-by-step diagnostic checks.
Trezor and the Trezor Bridge project emphasize transparency. Much of the code is open source and available for audit, allowing security researchers and the community to inspect and verify that bridge does not leak sensitive data. Using Trezor/Bridge keeps the attack surface small because cryptographic operations are enforced on-device and not delegated to the host.