What is Trezor Bridge?

Trezor Bridge is a small, official software utility from Trezor that enables your computer (browser or compatible apps) to communicate securely with your Trezor hardware wallet via USB. Because browsers often block direct USB access for security reasons, Bridge acts as a local intermediary — letting wallet apps talk to your Trezor device, while keeping your private keys offline. Trezor Help Center+2Trezr Bridge Docs+2

Bridge doesn’t store or transmit your private keys, seed phrase, or any sensitive data externally. Signing transactions and confirmations still happen directly on your Trezor device. Bridge IO Learn+1

When You Need Trezor Bridge

  • You plan to use a web-based wallet interface (e.g. browser-based wallet, web‑wallet, or web dApp) rather than the desktop wallet application. Bridgetrezor+1

  • Your browser or operating system doesn’t support WebUSB or direct USB access for hardware wallets — Bridge ensures compatibility across Windows, macOS, and Linux, and works with major browsers (Chrome, Firefox, Edge, etc.). Trezor Help Center+1

  • You connect your Trezor device via USB and want a stable, secure link without browser plugins or drivers. Trezr Bridge Docs+1

If you mostly use the official desktop wallet app (Trezor Suite), Bridge may not be strictly required — Suite can communicate directly via USB. Trezor FAQ+1

How to Download Trezor Bridge — Safely

  1. Open a web browser and go to the official Trezor website: trezor.io/bridge. Trezr Bridge Docs+1

  2. Choose the version of Bridge that matches your operating system (Windows, macOS, or Linux) and download the installer. Project Trez Bridge+1

  3. Run the installer and follow the on-screen prompts.

    • On Windows: run the .exe or .msi file, accept permissions. Trezor FAQ+1

    • On macOS: open the downloaded .dmg, drag Bridge to Applications, and allow any security prompts. Trezor FAQ+1

    • On Linux: install via .deb, .rpm, or relevant package formats using your package manager. Trezor FAQ+1

  4. After installation, Bridge runs in the background (as a local service). Restart your browser to ensure it recognizes Bridge. Home Bridge Trezarr+1

  5. Connect your Trezor device via USB, open your web wallet or Trezor Suite Web, and grant permission when prompted. On‑device, you’ll confirm the connection or any transactions. Bridge IO Learn+1

Important security advice:

  • Only download Bridge from the official domain trezor.io. Avoid third‑party mirrors or unknown links. Trezr Bridge Docs+1

  • Never enter or upload your recovery seed or private keys into any website — Bridge doesn’t require that. All key operations happen on your Trezor hardware device. Bridge IO Learn+1

  • Keep Bridge and your device firmware up to date. Updates may include fixes and improved compatibility. Bridge Trezr+1

What Happens After Download & Installation

Once Bridge is installed and running:

  • It listens for USB connections from your Trezor device and acts as a secure conduit between browser/web apps and your hardware wallet. Trezor Help Center+1

  • You can use web‑wallets, web‑apps, or dApps that support hardware wallets, and Bridge will handle the USB communication — but all confirmations (like transactions, firmware updates, messages) must be accepted on‑device. Bridge IO Learn+1

  • Bridge runs quietly in the background. You may see an icon in your system tray or menu bar indicating it’s active. Bridge IO Learn+1

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