Trezor Bridge — Advanced Hardware Security Platform

Trezor Bridge is the secure connectivity layer between your Trezor hardware wallet and desktop applications. It facilitates safe, reliable communication while ensuring private keys never leave your device.

Download Bridge Getting Started

What is Trezor Bridge?

Trezor Bridge is a small, secure software bridge that runs on your computer and enables trusted communication between the Trezor hardware wallet and web or desktop wallet interfaces. Unlike browser-only solutions, Trezor Bridge provides a hardened transport layer that reduces attack surface and improves reliability across operating systems.

Core Benefits

  • Secure communication: All messages between your computer and the Trezor device are handled through the bridge without exposing private keys.
  • Cross-platform: Works on Windows, macOS, and Linux with consistent behavior.
  • Improved browser compatibility: Avoids issues with browser API changes and prevents malicious web pages from directly accessing device endpoints.
  • Automatic updates: Keeps the bridge and its security patches up to date safely.

How Trezor Bridge Works

When you connect your Trezor device, the operating system recognizes it as a secure USB peripheral. Trezor Bridge runs in the background and exposes a local API endpoint that authorized applications can call. Before any sensitive action, you confirm transactions on the physical device — the bridge simply relays signed requests and responses.

Isolation

Bridge separates web interfaces from the device layer to limit risk from untrusted pages.

Auto-reconnect

Graceful reconnection logic when cables disconnect or the device sleeps.

Versioning

Strict version checks ensure compatibility and prevent downgraded or tampered clients.

Telemetry privacy

Minimal and opt-in telemetry; no private key or transaction data is ever sent to servers.

Installation & Setup

Installation is straightforward: download the official installer, follow the system prompts, and grant any required permissions. For web wallets, ensure your browser is updated and that you connect the device when prompted. Typical steps include:

  • Download the official Trezor Bridge installer from the Trezor website.
  • Run the installer and confirm permissions (Windows: administrator prompt; macOS: allow extension).
  • Connect your Trezor device using a certified cable and unlock with your PIN.
  • Open your wallet interface and follow the on-screen pairing instructions.

If you encounter driver issues, restart your machine or consult the support documentation for platform-specific tips.

Security Considerations

Trezor Bridge is designed to minimize attack vectors, but safe usage depends on combining the bridge with other best practices. Always ensure you:

  • Download installers from official sources only.
  • Keep device firmware and bridge software up to date.
  • Confirm every transaction on the physical device screen.
  • Never share your recovery seed or PIN with anyone.

Developer Notes

Developers building integrations with Trezor Bridge should use the documented local API and perform strict origin checks. Use the version negotiation flows and handle errors gracefully; never attempt to bypass device confirmations.

Example local endpoint: http://127.0.0.1:21325 (port may vary).

Disclaimer — Important:

Trezor Bridge is a connectivity component that enhances secure communication between your computer and Trezor hardware wallets. Cryptocurrency activities are inherently risky. Trezor Bridge and related software do not constitute financial advice. Always verify software integrity, keep backups of your recovery seed offline, and never disclose your seed, PIN, or passphrase to anyone. Use official downloads only.