Overview — what is Trezor Bridge? ⚙️ Trezor Bridge is a small local application that connects your Trezor hardware wallet to web-based wallets and apps via your browser. It acts as a secure bridge between the device and apps like Trezor Wallet or third-party services, enabling communication over USB without requiring browser extensions.
Why Bridge matters
Trezor Bridge solves compatibility and security friction: browsers cannot directly talk to USB devices in a safe, standardized way across platforms. Bridge provides the minimal, signed interface that allows web apps to talk to your Trezor while keeping keys offline on the device. ✅
How to install
Installation is straightforward on Windows, macOS, and Linux. Steps in short:
- Visit the official Trezor website and download the Bridge installer. 🌐
- Run the installer and follow prompts (Windows/macOS: graphical installer; Linux: .deb or package manager available).
- Plug in your Trezor and open the web wallet. The browser will detect Bridge and the device.
❗ Only download Bridge from the official Trezor domain. Never install software from untrusted sources — phishing copies exist.
Common issues & fixes
Browser doesn’t detect device
Try restarting Bridge and the browser. On some systems, you must allow Bridge in firewall settings. If a browser extension is present, disable it and prefer Bridge + native WebUSB support.
Permission errors
Grant USB access when prompted. On macOS you may need to allow the installer in System Preferences > Security.
Updating Bridge
Keep Bridge updated — updates patch compatibility and security. The web wallet usually notifies you if the installed version is outdated; otherwise re-download from the official site. 🔄
Security best practices
- Only use official software and confirm installer signatures when available. 🛡️
- Verify the website URL and certificate before connecting your device. 📛
- Keep firmware on the Trezor device updated — Bridge and firmware are separate layers. 🔁
- Use a secure computer and keep OS security patches current. 💻
Advanced: command-line and troubleshooting
For developers and advanced users, Bridge exposes a local API and can be restarted from the OS command line. If you see connection timeouts, check USB cables, switch ports, or try a powered USB hub. For logs, look in the Bridge installation directory and consult Trezor's official troubleshooting docs.
Alternatives & when Bridge isn't used
Some modern browsers support WebHID/WebUSB directly for certain interactions, and Trezor provides native integrations for apps. However Bridge remains the recommended, cross-platform method for reliable communication, especially when browser support is inconsistent. 🔁
FAQ
Q: Is Bridge safe? A: Yes — Bridge is a local application that merely forwards messages; private keys never leave the Trezor device. 🔐
Q: Can malware intercept Bridge? A: Local malware could try — so keep your OS clean, use antivirus, and avoid unknown downloads. The device confirms critical actions on-screen, mitigating many remote risks. 🛡️
Quick checklist before connecting
- ✅ Download Bridge from the official site
- ✅ Update Trezor firmware
- ✅ Close unnecessary browser tabs/apps
- ✅ Use a reliable USB cable and port
With those steps you should have a smooth, secure connection between your hardware wallet and web apps. If something still fails, consult official support channels or community forums for guidance — always prioritizing the official knowledge base first. 📚