Trezor Bridge is a lightweight application that enables your Trezor hardware wallet to communicate with web-based wallets and desktop apps securely. Acting as a trusted intermediary between your browser and the Trezor device, it ensures that private keys always remain stored inside your hardware wallet and never touch your computer or the internet.
Modern browsers restrict direct USB communication with hardware devices for safety reasons. Trezor Bridge provides a secure channel that allows applications like Trezor Suite or compatible third-party wallets to exchange commands with your Trezor. It eliminates the need for browser plugins, offering greater reliability, consistency, and long-term compatibility across operating systems.
When you connect your Trezor device, Bridge identifies it, establishes a secure session, and facilitates communication between the web interface and the wallet. Each operation—whether retrieving a public key, verifying an address, or signing a transaction—is performed through the Bridge, but approved only after you confirm it on the Trezor device screen. This ensures every action requires user consent and prevents unauthorized use.
Trezor Bridge does not store or access your private keys, recovery seed, or PIN. It simply transfers verified, encrypted commands between the wallet interface and your device. All sensitive actions require your explicit physical confirmation on the hardware itself.
Installing Bridge is straightforward—download it from the official Trezor website, follow the on-screen instructions, and restart your browser. Trezor frequently updates Bridge to keep pace with browser and OS changes. Regular updates ensure stable connectivity and strong security. Always verify the source before installing or updating to avoid tampered versions.
Bridge ensures seamless connection between your hardware wallet and browsers, even those that don’t fully support WebUSB. It works consistently across Chrome, Firefox, and other browsers, maintaining a unified experience regardless of system quirks or restrictions.
If your device isn’t recognized, check your USB connection, restart the Bridge process, or reinstall it. Occasionally, other drivers or outdated browser caches can interfere. Restarting your system or switching browsers often resolves such issues. When in doubt, consult official Trezor documentation.
Bridge ensures firmware updates are handled safely through Trezor Suite or supported applications. The update commands are transmitted securely to your Trezor device, which then verifies and installs them. Bridge never modifies or injects firmware directly—it only relays verified data, preserving full transparency during critical updates.
Trezor Bridge operates locally. It doesn’t send wallet data or transaction history to external servers. Some minimal telemetry (such as version checks) may occur, which users can disable within Trezor Suite settings. For privacy-focused setups, disabling automatic updates and telemetry ensures full control of your data flow.
Developers integrating Trezor into their applications can rely on Bridge’s documented API to build secure interfaces. Enterprise administrators can deploy Bridge system-wide for managed workstations, ensuring employees interact with hardware wallets under strict security policies. The open-source nature of Bridge makes it auditable and adaptable to different environments.
Some browsers can communicate directly using WebUSB, but Bridge provides a more stable and consistent experience across all browsers and platforms.
Yes. Bridge is open-source, allowing security researchers and developers to review its code and confirm that it performs only its stated functions.
Yes. Once installed, Bridge runs locally and does not require an active internet connection to function—except when checking for updates or downloading new versions.
No. Bridge transmits only encrypted commands between your computer and the Trezor device. Your private keys never leave your hardware wallet.
Trezor Bridge plays an essential role in connecting your hardware wallet to modern desktop and web interfaces. By ensuring every action is verified on your physical device, it preserves Trezor’s core security model while providing a seamless user experience. Whether you’re managing crypto assets or building advanced wallet tools, Bridge guarantees safe, consistent communication between hardware and software.