Trezor Bridge — Secure Connection for Your Trezor

A lightweight, secure connector that keeps your hardware wallet safe while it talks to your browser and apps.

Official Utility

What is Trezor Bridge?

Secure • Local • Lightweight

Trezor Bridge is the official desktop service provided by Trezor that creates a secure communication channel between your Trezor hardware wallet and web applications (including Trezor Suite and compatible browser-based wallets). It runs locally on your computer and safely forwards encrypted requests from your browser to your device so your private keys never leave the hardware.

Why it matters: without Bridge, browsers cannot reliably reach the device across platforms. Bridge avoids insecure workarounds, improves compatibility and keeps the connection both robust and private.

Core Benefits

  • Local-only connection: Bridge runs on your machine — it never sends sensitive data to third parties.
  • Cross-browser support: Works with Chrome, Edge, Firefox and other supported browsers through secure local APIs.
  • Transparent updates: Easy install and automatic updates keep you protected from known issues.
  • Consistent UX: Enables a predictable, fast experience when interacting with web wallets and Trezor Suite.

How Bridge Works — Simple Overview

1

Local Service

Bridge installs as a small service on your computer. When a website needs to talk to your Trezor, it communicates with Bridge over a secure local port.

2

Secure Forwarding

The Bridge forwards the request to your connected Trezor device. All signing and key operations happen on the device itself — Bridge only passes messages.

3

User Confirmation

Every action that affects funds or sensitive data requires confirmation on the Trezor device display. No confirmation = no operation.

4

Return Signed Result

Once confirmed, the signed transaction is returned to the website via Bridge; the private key never leaves the hardware.

Installation & Setup (Short)

  1. Download the latest Bridge installer from the official Trezor website.
  2. Run the installer and follow platform-specific prompts (you may be asked for admin rights).
  3. Restart your browser if required. Connect your Trezor device via USB or WebUSB as instructed.
  4. Open your chosen wallet or Trezor Suite and authorize the device when prompted.
Important: If a website asks for your recovery seed, close the page immediately. Bridge will never request your recovery seed — only the device prompts for confirmations.

Common Troubleshooting

Bridge is dependable, but you may run into occasional hiccups. These are common and easy to fix:

  • Device not recognized: Reconnect the USB cable, try another port, or restart Bridge via your OS services panel.
  • Browser can't access Bridge: Make sure you restarted your browser after installing Bridge and that no firewall rules block local connections.
  • Installation errors: Ensure you used the correct installer for your OS and that you have admin privileges during installation.
  • Multiple wallets open: Close other applications that might hold the device connection (other wallet apps, dev tools).
Pro tip: On some systems, using a different USB cable (data-capable, not charging-only) resolves recognition problems instantly.

Privacy & Security Considerations

Trezor Bridge was designed with privacy and security as priorities. Key points:

  • Bridge executes locally and does not transmit private keys or seed phrases anywhere.
  • All cryptographic signing happens on the Trezor device; Bridge acts as a messenger only.
  • Bridge does not collect or upload your transaction history — your data stays local.
  • Automatic updates are cryptographically signed to ensure authenticity.
Tip: Use a trusted machine for any crypto operations. Bridge is secure, but physical access or compromised devices can still pose risks.

Advanced Usage

For advanced users and developers, Bridge supports integration patterns that enable web apps and local tools to interact with Trezor devices securely.

  • Developers can call Bridge APIs to detect devices, send commands and receive responses — all while the user confirms actions on-device.
  • Bridge can be used for automated test environments with proper safeguards (never use real seed in test automation).
  • Advanced configuration may include logging levels for debugging — logs are local and should be handled carefully to avoid leaking sensitive metadata.

Best Practices

  • Keep Bridge and your Trezor firmware up to date — updates patch vulnerabilities and improve compatibility.
  • Always verify the website's URL and certificates when connecting — phishing sites attempt to mimic official services.
  • Confirm addresses on the physical device before approving transactions.
  • Use a secure, private network when transacting; avoid public Wi-Fi during sensitive operations.

Quick Setup Checklist

  • Download Bridge from official site
  • Run installer (admin privileges)
  • Restart browser and connect Trezor
  • Authorize the device on first prompt
  • Keep firmware & Bridge updated

Security Reminders

  • Bridge never asks for your recovery seed.
  • Only confirm transactions you recognize on-device.
  • Store recovery seed offline and secure.
  • Use reputable wallets and official downloads.

When to Contact Support

If Bridge repeatedly fails to install, if device firmware cannot be updated, or if you suspect a security issue (unexpected seed prompts, unusual transactions), contact Trezor support via the official website and follow their verification steps.