Official instructions for connecting your Trezor hardware wallet to desktop browsers via Trezor Bridge. Always use the official download link at trezor.io/bridge.
Trezor Bridge is a small desktop application that enables communication between your Trezor hardware wallet and browser-based applications by bridging USB access (WebUSB/WebHID) securely. It is required for some browsers and older set-ups to detect the device reliably.
When do you need Bridge?
If your browser doesn't support direct WebUSB/WebHID access.
When using older operating systems or legacy browser versions.
To improve device detection and compatibility with desktop apps.
How to Install Trezor Bridge (Step-by-step)
Go to the official page:trezor.io/bridge and download the version matching your OS (Windows, macOS, Linux).
Run the installer: Follow the platform-specific installer prompts. On macOS you may need to allow the installer in System Settings > Security & Privacy.
Restart browser: After installation, restart your browser to ensure the Bridge service is recognized.
Connect device: Plug your Trezor device into a working USB port and unlock it with your PIN on-device.
Grant permissions: If prompted, allow the browser to access the device (WebUSB or WebHID prompt). Confirm on your Trezor device for any action requests.
Verify connection: Open Trezor Suite or suite.trezor.io to confirm the device is detected and functioning.
Note: Modern browsers like Chrome, Brave, and Edge increasingly support WebHID/WebUSB without Bridge. Only install Bridge when needed or recommended by Trezor's official documentation.
Browser Permissions & Settings
To allow your browser to talk to the device, enable required permissions:
WebUSB / WebHID: For Chrome/Edge/Brave ensure the site is allowed to access USB devices.
Site settings: In browser settings, check site permissions and remove blocked entries for suite.trezor.io or related domains.
Extensions: Temporarily disable extensions like ad blockers or privacy guards that may block USB access.
Troubleshooting — Common Issues & Fixes
Device not detected: Try a different USB cable/port, reinstall Bridge, or use another browser.
Bridge installer blocked: On Windows, run the installer as Administrator. On macOS, allow the app under System Settings > Privacy & Security.
Browser still blocks access: Clear site data, restart browser, and make sure no extensions are interfering.
Multiple devices connected: Disconnect other USB devices that might interfere with enumeration.
Bridge service not running: On Windows check Services for the "Trezor Bridge" entry and start it manually; on macOS check Activity Monitor.
Advanced diagnostics
You can use browser developer tools to inspect USB errors in the console and capture helpful logs for support. Avoid sharing sensitive device information—only give logs that are safe and redact any personal data.