Trezor Bridge — The Secure Gateway to Your Hardware Wallet®

What Is Trezor Bridge?

Trezor Bridge is a lightweight background service that acts as the bridge between your Trezor hardware wallet and web applications or browser-based tools. Without Bridge, many web apps would not be able to communicate with your device.

Instead of relying on browser extensions (which become deprecated or limited), Bridge runs locally on your operating system (Windows, macOS, Linux), handling communication requests securely. Your browser talks to Bridge; Bridge talks to your Trezor device. All critical operations, such as signing transactions, always occur on the hardware device itself.

Key Features of Trezor Bridge

• 🔒 Local Communication: Bridge operates locally and does not transmit your sensitive data over the internet.
• 🔐 Encrypted Messaging: All messages between browser and device are encrypted and authenticated.
• 💻 Cross-Platform Support: Works across Windows, macOS, and Linux with major browsers like Chrome, Firefox, Edge.
• 🧩 No Browser Plugins Needed: Bridge replaces the need for extension-based methods with better compatibility.
• 🔄 Automatic Updates: Bridge updates seamlessly to stay compatible with new firmware and browser changes.
• 🚀 Seamless Integration: Works perfectly with Trezor Suite, Trezor web tools, and supported third-party dApps.
• ✔ Fallback Compatibility: Ensures that even apps without native hardware support can connect via Bridge.

Install & Setup Trezor Bridge

Getting Trezor Bridge up and running is easy. Follow these steps:

1. Visit the official Trezor start page: trezor.io/start.
2. Select the Bridge installer for your operating system (Windows, macOS, Linux).
3. Download the installer directly from Trezor’s domain (verify authenticity).
4. Run the installer and follow the prompts (you may need to grant USB or security permissions).
5. After installation, Bridge runs as a background service, automatically launching when needed.
6. Open your browser and access Trezor Suite or any compatible application—the software will detect Bridge and your Trezor device automatically.
7. Connect your Trezor hardware wallet via USB, approve connection on the device, and you’re ready to manage crypto.

Security & Privacy Architecture

Trezor Bridge is engineered with security and privacy at its foundation. Here’s how your crypto remains protected:

• ✅ Private Keys Stay On Device: Bridge never touches or transmits your private keys; signing always happens inside Trezor.
• ✅ Zero Trust Protocol: Each request includes origin checks and must be confirmed on your hardware wallet to prevent spoofing.
• ✅ Local-only Traffic: Bridge communicates via localhost (127.0.0.1), so no remote data forwarding occurs.
• ✅ Verified Updates: Installer files and Bridge updates are cryptographically signed; only trusted versions install.
• ✅ Minimal Permissions: Bridge requests only USB access permission and no further system privileges.
• ⚠ User Vigilance: Always confirm transaction details on your Trezor screen—phishing sites may try impersonation.

Frequently Asked Questions

Do I always need Trezor Bridge?

Bridge is essential for many browser-based applications and some dApps to talk to your Trezor device. In some native desktop use cases (like with Trezor Suite), direct connection paths may exist, but Bridge ensures widest compatibility.

Is Trezor Bridge safe?

Yes — it runs locally, never sends private keys over the internet, and uses encryption and device confirmation for every action.

Which operating systems support Bridge?

Trezor Bridge supports Windows, macOS, and Linux platforms.

What if Bridge doesn’t detect my Trezor?

Try reconnecting your device, restarting Bridge, disabling conflicting extensions, or reinstalling Bridge from the official source.

Can I use Bridge with dApps and exchanges?

Yes. Many web3 apps and exchanges support hardware wallets via Bridge. Always confirm operations on your Trezor device screen before approving.