Trezor Bridge is a lightweight helper application that allows browsers and web-based wallets to communicate reliably with your Trezor hardware wallet. It removes the need for legacy browser plugins, handles USB routing, and preserves the core security model: your private keys remain on-device and transactions must be approved physically on your Trezor.
Trezor Bridge is a small background service that establishes a secure, local communication channel between your web browser and the Trezor device. When native browser APIs restrict direct USB access, Bridge steps in to provide consistent detection and safe signing flows. Bridge is officially maintained, open-source, and designed to be minimal and reliable.
Works with major browsers to ensure websites can detect and communicate with your device reliably.
Bridge facilitates encrypted local communications — private keys never leave your hardware wallet.
Designed to run silently in the background without impacting system performance.
Optional update checks help you stay on the latest secure release.
Available for Windows, macOS and most popular Linux distributions.
Verify checksums and digital signatures to confirm authenticity.
Trezor Bridge is part of the official Trezor ecosystem. Its source code is public and regularly reviewed. Security is integral: Bridge only brokers local messages and never accesses or exports private keys. Combined with device-level confirmations, the architecture protects users from remote compromise and phishing attacks. Always download Bridge from official channels and verify installer signatures when available.
Bridge is required primarily for browser-based workflows where the browser restricts direct USB access. If you use the desktop Trezor Suite app, Bridge is typically not needed.
Yes — Bridge does not store private keys and functions as a local relay. Still, only download official builds and verify checksums to avoid tampered installers.
Restart the browser, ensure Bridge is running (look for the tray icon), try a different USB cable/port, and make sure the site you visit is a supported integration.
Bridge focuses on privacy and typically minimizes telemetry. Consult the official privacy policy or release notes for exact details about optional usage data.
Compare the SHA256 checksum or PGP signature provided on the official Trezor download page with the downloaded file. Use official verification tools for best assurance.
Yes — you can install Bridge on any trusted machine where you plan to connect your Trezor, but avoid running untrusted environments when handling funds.