Trezor Bridge® — Connect Your Trezor to Web Browsers

What is Trezor Bridge?

Trezor Bridge is a small background application that creates a secure channel between your Trezor hardware device and web-based wallet interfaces (for example, Trezor Suite or compatible third-party apps). Unlike browser extensions, Bridge runs locally and manages device communication without exposing sensitive data to the web.

Why it's important

Hardware wallets keep private keys offline. Trezor Bridge ensures the browser can send commands (like requestPublicKey) and receive answers from your device without ever storing secrets in the cloud. This reduces attack surface and keeps your crypto safe.

Supported browsers & platforms

Chrome, Edge, Brave, Firefox (desktop) — modern releases supported.
Windows, macOS, Linux — native Bridge builds for each OS.
Note: Mobile browsers usually can’t connect directly to Bridge; use Trezor Suite mobile or supported mobile workflows.

Quick install (safe & simple)

Download Trezor Bridge from the official Trezor website.
Run the installer and grant permissions when prompted.
After installation, plug in your Trezor and open your web wallet — the browser should detect the device automatically.

If your browser prompts for permission to allow connections, always inspect the origin and accept only trusted websites.

Troubleshooting tips

If the device is not detected, try unplugging and reconnecting the USB cable or switching ports.
Restart Bridge (look for the Bridge tray icon or restart the computer).
Check browser flags or extension conflicts — some privacy extensions can block local ports.
Make sure your Trezor firmware and Bridge installation are up to date.

Security best practices

Always download Bridge and firmware updates from the official Trezor domain. Never share your recovery seed or private keys. Use a secure, updated browser and avoid public or untrusted machines for high-value transactions.

FAQ

Can Bridge access my private keys?: No — Bridge only forwards protocol messages between the browser and the device. Private keys remain on the Trezor device.
Do I need Bridge for every web wallet?: Only for wallet web-apps that rely on local device communication. Some services implement WebUSB or alternative methods; follow the wallet's installation guide.
Is Bridge open source?: Parts of the Trezor software stack are open-source. Consult Trezor's official documentation for project repositories and verification steps.