Trezor Bridge | The Secure Gateway to Your Hardware Wallet^®

Short summary: Trezor Bridge is the piece of software that securely connects your Trezor hardware wallet to web-based wallet apps (like Trezor Suite or third-party integrations). It’s lightweight, privacy-focused, and built to make communication between your device and computer reliable and safe.

Quick links:

Official: Trezor Bridge Get Started with Trezor Trezor Support Setup Guide

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What is Trezor Bridge?

Definition (H3)

Trezor Bridge is an application that runs on your computer (Windows, macOS, or Linux) and acts as a secure, encrypted gateway between your Trezor hardware wallet and web-based wallet interfaces such as Trezor Suite or compatible third-party tools. It replaces older methods (like direct USB HID connections) with a stable local HTTP interface and cryptographic safeguards.

Why a bridge is needed (H4)

Modern browsers restrict direct access to USB devices for security reasons. Trezor Bridge creates a trusted, local communication channel without exposing your wallet to the internet. It ensures messages are delivered consistently and that firmware or transaction signing requests come from the right sources.

Quick tech note (H5)

Trezor Bridge listens locally (on localhost) and uses encrypted messaging with the device. It does not upload your keys or secrets anywhere — key material stays on the hardware wallet.

Why Trezor Bridge matters for security and usability

Trezor Bridge balances two common needs: security and user convenience. Without a stable local bridge, users would struggle with unreliable browser/device pairings, while new layers of permissions could increase attack complexity. Bridge makes setup and routine tasks—like sending crypto, updating firmware, or connecting to dApps—smooth and predictable.

Security checkpoints

Bridge enforces device origin checks so a webpage cannot silently connect to your Trezor.
Firmware updates are signed and verified before being applied.
Bridge does not have access to your seed or private keys; it only relays commands to the device.

How to install Trezor Bridge (step-by-step)

Before you begin

Always download Bridge from the official Trezor domain. Avoid third-party sites and mirrors. Official download: https://trezor.io/bridge/.

Windows

Run the installer (.exe) and follow prompts. If your browser asks for permission to open Trezor Suite, allow only when you’re on the official Trezor site.

macOS

Download the .dmg, open it, and drag Bridge to Applications. If Gatekeeper warns, confirm the download source and allow the app in System Settings → Security & Privacy.

Linux

Use the provided package or AppImage. Some distributions require running the AppImage with executable permissions: chmod +x trezor-bridge.AppImage && ./trezor-bridge.AppImage.

Troubleshooting tips

If your browser still can’t detect the device, restart the Bridge service and the browser.
Try a different USB cable — not all cables support data transfer.
Check official docs at Trezor Support.

Safety and best practices

Never enter your recovery seed into your computer. Bridge never asks for your seed — if any page or prompt requests it, close immediately and contact official support.

Keep Bridge updated

Bridge updates can include security patches and compatibility fixes. Set it to auto-update where possible or check the official Bridge page regularly.

Verify sources

When using firmware updates or download links, verify the URL and prefer TLS-secured (https) official pages. Example official pages you may need:

Firmware Official Guide

Integrations and third-party support

Trezor Bridge is supported by the official Trezor Suite and many third-party cryptowallets, exchanges, and dApps that declare explicit compatibility. Always ensure the third-party tool lists Trezor support in its documentation and that you’re using the latest versions.

Developer note (H3)

Developers integrating Trezor functionality will interact with the Bridge’s local endpoints and follow Trezor’s developer protocols. The Trezor Developers pages contain API references and examples.

Frequently Asked Questions (FAQ)

Q1: What exactly does Trezor Bridge do?: A: It runs locally on your computer and routes commands between the browser (or desktop wallet) and the Trezor hardware device. It normalizes communication so web apps can reliably and securely talk to the device.
Q2: Is Bridge safe to install?: A: Yes — when downloaded from the official Trezor domain. Bridge itself cannot access your private keys; the hardware wallet signs transactions on the device.
Q3: Where can I download Bridge?: A: From the official Bridge page: https://trezor.io/bridge/.
Q4: I installed Bridge but my browser doesn’t see my device. What do I do?: A: Try restarting Bridge, restarting your browser, switching USB cables/ports, and confirming Bridge is running. See the support page: https://trezor.io/support/.
Q5: Does Bridge send my seed to the internet?: A: Absolutely not. The seed and private keys remain on the Trezor device. Bridge only forwards encrypted commands and responses.
Q6: Can I use my Trezor without Bridge?: A: Some advanced users on Linux or with custom setups may interact directly via USB/HID, but Bridge is the recommended, supported method for most users to ensure compatibility and security.
Q7: How do I update Bridge?: A: Download the newest installer from https://trezor.io/bridge/ or enable auto-update if your OS supports it.
Q8: Who do I contact if Bridge breaks?: A: Contact official Trezor Support or consult the community resources linked on the official site. Avoid sharing your recovery seed while seeking help.
Q9: Is Bridge open source?: A: Trezor publishes many of its tools and references. Check Trezor on GitHub for code and community projects.
Q10: Will Bridge work with mobile devices?: A: Bridge is primarily a desktop client. Mobile integrations are handled differently (e.g., mobile apps or WebUSB/WebHID support where available). Refer to the mobile docs on the official site.

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