Official Trézor® Bridge®®
Trezor Bridge is a lightweight background application that enables communication between your Trezor hardware wallet and your web browser. It acts as a secure connector, allowing your computer and browser-based wallet interface to interact with your Trezor device safely.
What Is Trezor Bridge?
Trezor Bridge replaces older browser extensions that were previously required to connect hardware wallets. Instead of relying on plugins, Bridge runs quietly in the background on your computer and establishes a secure channel between:
- Your Trezor hardware wallet
- Your web browser
- The Trezor web interface
It ensures smooth and secure device recognition without exposing private keys.
Why Trezor Bridge Is Important
When using web-based wallet services, your browser cannot directly communicate with USB devices for security reasons. Trezor Bridge solves this by:
- Enabling secure USB communication
- Verifying device authenticity
- Allowing transaction confirmations
- Maintaining encrypted communication
Without Trezor Bridge (when required), your browser may not detect your Trezor device.
Do You Still Need Trezor Bridge?
In most cases today, if you are using Trezor Suite Desktop, you do not need Trezor Bridge because the desktop app handles communication internally.
You may need Trezor Bridge if:
- You are using the web version of Trezor Suite
- Your browser does not support native WebUSB
- You are using an older system configuration
Modern browsers like Chrome often support WebUSB, reducing the need for Bridge in some environments.
How to Install Trezor Bridge
- Visit the official Trezor website.
- Navigate to the downloads section.
- Select Trezor Bridge for your operating system:
- Windows
- macOS
- Linux
- Download and run the installer.
- Restart your browser after installation.
Once installed, it runs automatically in the background.
How to Check if Trezor Bridge Is Working
After installation:
- Connect your Trezor device via USB.
- Open the Trezor web interface.
- If the device connects successfully, Bridge is functioning correctly.
You typically won’t see a visible window — it operates silently.
Security Features
Trezor Bridge is designed with strong security measures:
- Encrypted communication between browser and device
- No access to private keys (keys remain inside the hardware wallet)
- Official firmware verification
- Signed software downloads
Always download Trezor Bridge from the official website to avoid malicious software.
Common Issues & Fixes
Device Not Detected
- Ensure USB cable supports data transfer (not charge-only).
- Restart your browser.
- Reinstall Trezor Bridge.
Connection Errors
- Update your browser.
- Update Trezor firmware.
- Restart your computer.
Trezor Bridge vs Trezor Suite
| Feature | Trezor Bridge | Trezor Suite Desktop |
|---|---|---|
| Browser-based use | Yes | No |
| Background service | Yes | No |
| Built-in communication | No | Yes |
| Recommended for beginners | Not necessary | Yes |
For most users, Trezor Suite Desktop is the recommended setup because it simplifies the process and enhances security.
Final Thoughts
Trezor Bridge is a secure communication tool that ensures your browser can safely connect to your Trezor hardware wallet when needed. While newer systems may not always require it, it remains a reliable backup solution for certain browser configurations.
If you're unsure whether you need Trezor Bridge, the safest and easiest option is to use Trezor Suite Desktop, which handles device communication automatically.