Trezor Bridge — The Secure Gateway to Your Hardware Wallet

A modern, lightweight bridge for secure communications between your browser and Trezor hardware devices.

Why Trezor Bridge matters

Trezor Bridge is the secure gateway that enables your browser to communicate with a Trezor hardware wallet. It runs locally, connects only to trusted devices, and isolates web apps from direct USB access. That separation prevents malicious web pages from interacting with your hardware wallet without explicit user action.

A

Secure local communication

Bridge creates an encrypted, authenticated channel between your OS and the Trezor device. Only the Bridge process knows device endpoints, limiting exposure to the browser.

B

Consistent cross-browser support

Works with major browsers — Chrome, Firefox, Edge — offering the same trusted integration regardless of where you access your web wallet.

C

Minimal, auditable code

Bridge is designed to be minimal and observable. Its architecture reduces complexity and makes security audits simpler and more effective.

How it works — quick overview

When you open a supported web wallet, the site requests access to a Trezor device. Trezor Bridge mediates that request: it discovers attached Trezor devices via USB and provides a small API endpoint the browser can call. Bridge never exposes raw USB access to arbitrary websites — the wallet flow always requires explicit user interaction on the device to authorize sensitive operations (like signing transactions).

Core principles

  • Local-only communications — Bridge does not communicate with remote servers for device access.
  • Explicit user consent — device confirmation is required for keys or signatures.
  • Transparent updates — Bridge notifies users about updates and provides release notes for verification.

Frequently Asked Questions

1. Do I need Trezor Bridge to use my Trezor device with a web wallet?
Yes — Bridge provides the local bridge service that lets your browser discover and talk to the hardware wallet. Some modern web apps may offer WebHID/WebUSB alternatives, but Bridge remains the recommended cross-browser solution for compatibility and security.
2. Is Trezor Bridge safe to install?
Bridge is a local application with a narrow purpose. Install only from the official Trezor website or verified package repositories, verify checksums when available, and keep it updated. Bridge itself does not store keys or sensitive data — those stay on your device.
3. How do I update Bridge?
When updates are available, the official website provides signed installers and release notes. On supported OSes Bridge may prompt you to update; follow official instructions and verify signatures if you require maximum assurance.
4. Can malicious websites access my Trezor through Bridge?
No — Bridge alone does not grant universal access. The device enforces interactive confirmation for key use. Always be cautious: only connect when using trusted wallet sites and verify transaction details on the Trezor screen before confirming.
5. What if Bridge can’t detect my device?
Try these steps: reconnect the USB cable, use the official cable, restart Bridge or your browser, ensure no other app is monopolizing the device, and update Bridge & device firmware. If issues persist, consult official support with logs (do not share seed or private keys).