Trezor® Bridge Guide | Secure Connection for Your Device

Clear, step-by-step HTML guide to installing and using Trezor® Bridge so your Trezor hardware wallet communicates securely with web apps and desktop software.

What is Trezor® Bridge?

Trezor® Bridge is a small background application that creates a secure channel between your Trezor device and web-based wallets or desktop apps. It runs locally on your computer and avoids the need for legacy browser extensions.

Before you start — prerequisites

A Trezor hardware wallet (Model T or One).
A desktop or laptop running Windows, macOS, or Linux.
A supported browser (Chrome, Edge, Firefox or Brave) — make sure it is up to date.
Administrator rights to install software on the machine.
Reliable internet connection for downloading the Bridge installer and any firmware updates.

Download & install Trezor® Bridge

Close apps that might use the USB port (other wallet software, device managers).
Download the Bridge installer from the official source (verify the site and the file signature when possible).
Run the installer and follow on‑screen instructions. On macOS you may need to approve a system extension in System Settings > Security.
After installation, Bridge runs in the background as a small system service.

Tip: If a website asks for a browser extension, prefer sites that support Trezor® Bridge (no extension) — it’s more modern and secure.

Connect your Trezor device to a web app

Open your browser and navigate to the web wallet or app that supports Trezor devices.
Plug your Trezor into a USB port using the official cable that came with it.
If prompted by the browser, allow the site to access the device. Confirm on the Trezor screen that the connection is expected.
When Bridge is running, the site should detect your device automatically and show connection options.

Security: Always verify the domain of the site you are connecting to and confirm the fingerprint or message displayed on your Trezor device before approving operations.

Using Trezor® Bridge with desktop apps

Some desktop wallet apps use Bridge to talk to Trezor devices. After installing Bridge, launch the desktop app, then plug in your Trezor and follow the app’s prompts to connect.

Common troubleshooting steps

Bridge not detected: Restart your computer, reconnect the Trezor, and verify Bridge is running in the background (look for a small Bridge process).
Browser prompts: Ensure your browser has permission to access USB devices and that no conflicting extension is installed.
Firmware update required: If the device prompts for a firmware update, follow official instructions before continuing.
Multiple wallets open: Close other wallet applications that may be holding the device connection.
macOS USB issues: Reinstall Bridge and check System Settings > Privacy & Security for blocked system prompts.

Example: On Windows Task Manager look for "Trezor Bridge" or "trezord" process. On macOS use Activity Monitor.

Security best practices

Only download Bridge from official sources and verify file integrity when possible.
Never share your recovery seed. Trezor® Bridge never requests your seed.
Keep firmware and software up to date — checks for updates regularly.
Use a dedicated, trustworthy computer for large-value operations where feasible.
When approving transactions, verify every detail directly on the Trezor device screen before confirming.

Quick FAQ

Q: Is Trezor® Bridge safe?: A: Yes — Bridge is an official local connector. It does not transmit your private keys off the device. Its job is to relay encrypted messages between your browser/app and the hardware wallet.
Q: Do I need Bridge for mobile?: A: Bridge is primarily for desktop usage. Mobile solutions often use different connection methods (e.g., WebUSB, Bluetooth via supported devices). Check your app's documentation.
Q: Can multiple browsers use Bridge?: A: Yes — once Bridge is installed it can serve multiple browsers and desktop apps on the same machine.