Trezor Bridge — Secure & Smooth Crypto Access

What is Trezor Bridge?

Trezor Bridge is a small background application that enables modern web browsers and apps to communicate with a Trezor hardware wallet. Unlike older browser plugin approaches, Bridge runs locally, mediates encrypted communication with the device, and provides a stable, cross-platform bridge between the physical device and wallet software such as Trezor Suite or web-based integrations.

Why Bridge matters

When you interact with decentralized apps (dApps), exchanges, or wallet interfaces, the browser needs a safe channel to talk to the Trezor device over USB or WebUSB. Trezor Bridge:

• Creates a secure, driver-like interface without requiring kernel-level drivers.
• Reduces risk of web-based attacks by keeping the transport local and permissioned.
• Makes hardware wallet functionality available to the full ecosystem (Suite, dApps, explorers).

Official resources (quick access)

Below are key official links to get Bridge, documentation, and support:

How to install and set up Trezor Bridge

Installing Bridge is straightforward. The recommended route is to visit the official Bridge page and follow platform-specific installers (Windows, macOS, or Linux).

Step-by-step (quick)

1. Visit the official Bridge page: trezor.io/bridge.
2. Download the installer for your OS and run it. On macOS you may be asked to grant permissions in System Preferences; allow the app explicitly.
3. Open your browser and go to Trezor Suite or your chosen wallet interface.
4. Connect the Trezor via USB; approve the connection on-device when prompted.

Notes on web browsers

Most modern browsers (Chrome, Edge, Firefox) work with Bridge. If a website asks for permission to access the Trezor, confirm the request in-browser and on the device itself. If you prefer minimal dependencies, Trezor Suite's web interface works smoothly with Bridge active.

Security model & privacy

It's important to understand what Bridge does — and what it does not do. Bridge only facilitates transport; it does not hold your seed, keys, or private data. All critical cryptographic operations happen inside the Trezor device itself.

What Bridge protects against

• Network-level exposure of USB messages (traffic stays local).
• Unintentional device access by untrusted webpages (user permission required).
• Driver conflicts by providing a controlled, maintained interface.

What remains your responsibility

You remain responsible for your seed phrase, device PIN, and verifying addresses on the device screen. Never enter your seed into a browser or share it. Trust only official downloads and verify signatures when possible via the Trezor website and GitHub releases.

Troubleshooting common Bridge issues

Bridge not connecting?

Try these checks in order:

• Confirm Bridge is installed and running (check system tray / background apps).
• Try a different USB cable and port — many cables are power-only; use a data cable.
• Restart your browser and, if needed, the computer. On macOS allow permissions in Security & Privacy.
• Open Trezor Suite and follow the on-screen prompts to detect the device.

Still stuck? Advanced steps

Uninstall and reinstall Bridge from the official page, ensure no legacy drivers conflict, and consult the Trezor Wiki or Support pages for platform-specific commands. If you suspect malware, disconnect and use a clean device to verify your Trezor’s authenticity and firmware.

Best practices for daily use

Keep software up-to-date

Update Trezor Bridge, Trezor Suite, and your device firmware only from official channels. Check release notes on the official GitHub or Trezor blog before applying updates.

Minimize attack surface

• Use Bridge only when needed — close it if you’re not interacting with your wallet.
• Limit which websites you grant access; prefer well-known wallet apps and dApps.
• Use guest OS or dedicated machine for high-value operations when possible.

Regular audits

Periodically review connected sites, clear browser permissions, and validate that no unexpected applications are installed. Maintaining routine hygiene reduces the chance of social engineering or software-based compromises.

FAQ — Quick answers

Is Bridge mandatory?

No — some workflows (like using Trezor Suite via webUSB) may work without a separate Bridge install on certain platforms, but Bridge offers greater compatibility and stability across browser/OS combinations.

Can unauthorized sites access my Trezor?

No. Sites must request permission and the device requires confirmation for sensitive operations such as signing transactions and revealing public keys.

Where can I verify Bridge downloads?

Verify downloads and release notes on Trezor's official site and GitHub: github.com/trezor and trezor.io.