What is Trezor Bridge?
Trezor Bridge is a lightweight background service developed by SatoshiLabs to enable secure communication between Trezor hardware wallets and web-based applications. Launched as a replacement for outdated browser plug-ins, it ensures your device can interact with browsers like Chrome and Firefox without compromising security. As of October 2025, the standalone version has been deprecated in favor of integrated functionality within Trezor Suite, but it remains essential for web app users.
Acting as a secure intermediary, Trezor Bridge encrypts data exchanges, preventing exposure of private keys or sensitive information. It's not a full app but a daemon that runs silently, making it ideal for users accessing third-party web wallets or dApps.
Why Use Trezor Bridge?
In today's crypto landscape, secure connectivity is paramount. Trezor Bridge addresses common challenges:
- Browser Compatibility: Overcomes limitations in modern browsers that block direct USB access to hardware devices.
- Enhanced Security: Uses encrypted channels and authentication to verify requests, shielding against man-in-the-middle attacks.
- Seamless Integration: Works with Trezor Suite web app and third-party services like MyEtherWallet.
- Offline Key Protection: Never stores or accesses your private keys—transactions are signed on the device itself.
- Multi-OS Support: Compatible with Windows, macOS, and Linux for broad accessibility.
By facilitating reliable connections, Trezor Bridge empowers users to manage assets confidently without relying on insecure extensions.
How to Install and Set Up Trezor Bridge
Installation is straightforward and takes just minutes. Note: Since the standalone Bridge is deprecated, it's now bundled with Trezor Suite.
- Download Trezor Suite: Visit trezor.io/start and get the desktop or web app.
- Connect Your Device: Plug in your Trezor via USB; the app will prompt Bridge installation if needed.
- Follow Prompts: Allow the installer to run in the background—it's automatic and secure.
- Verify Connection: Test by sending a small transaction; confirm on your device screen.
For legacy users, uninstall the old standalone Bridge via your system's program files to avoid conflicts. Always download from official sources to evade imposters.
Trezor Bridge Compatibility
Trezor Bridge supports all major Trezor models and browsers. Quick overview:
| Component |
Supported Versions |
Notes |
| Trezor Models |
Safe 5, Safe 3, Model One |
Full integration via Suite. |
| Browsers |
Chrome (WebUSB), Firefox (via Suite) |
WebUSB preferred for direct access. |
| OS |
Windows, macOS, Linux |
Daemon auto-starts on boot. |
It enables over 1,000 assets, from Bitcoin to Ethereum, in web environments.
Security and Troubleshooting
Trezor Bridge prioritizes security by acting solely as a communication layer—your keys stay on the device. Common issues like connection failures often stem from outdated versions or firewall blocks; restart the service or check ports.
For advanced users, Homebrew on macOS offers easy installation: brew install trezor-bridge. If using Firefox, ensure Trezor Suite runs in the background.
Frequently Asked Questions (FAQs)
- What is Trezor Bridge used for?
- It enables secure communication between Trezor devices and web apps by handling USB-to-browser connections.
- Is the standalone Trezor Bridge still needed?
- No, it's deprecated—use the version integrated in Trezor Suite for better performance.
- Is Trezor Bridge safe to install?
- Yes, when downloaded from trezor.io. It can't access your funds directly, as signing happens on-device.
- How do I uninstall the old Bridge?
- Go to Program Files > TREZOR Bridge and run uninstall.exe on Windows; similar for other OS.
- Does Trezor Bridge work with all browsers?
- Primarily Chrome via WebUSB; Firefox requires Trezor Suite background running.
- Can Trezor Bridge steal my crypto?
- No, it doesn't store keys or sign transactions—always verify on your Trezor screen.
- Why won't my Trezor connect via web?
- Install/update Bridge through Trezor Suite or check for OS permissions/firewall issues.
- Where to download Trezor Bridge?
- It's included in Trezor Suite—get it from trezor.io/start.