Overview — what is Trezor Bridge?
Trezor Bridge is a lightweight background application that enables communication between your Trezor hardware device and Trezor Suite (desktop or web) or other compatible wallets. It handles USB connectivity and ensures secure message transport without exposing private keys. Think of Bridge as the translator that allows modern browsers and operating systems to talk safely to your Trezor device.
Installation & getting started
Follow these steps to install Trezor Bridge on Windows, macOS, and Linux. If you prefer the desktop Trezor Suite app, Bridge is often bundled or the Suite will prompt to install it automatically.
Step 1 — download only from official sources
Always download Trezor Bridge from the official Trezor website or an authenticated mirror. Verify TLS (the browser lock) and avoid third-party links. Official packages are signed; on some systems you may be prompted to allow a kernel driver or give permission to run.
Step 2 — platform-specific notes
Windows
Download the installer (.exe). Run as administrator if prompted. If you have older Windows versions (7/8), check compatibility notes on the download page. After installation, Bridge runs as a background service.
macOS
Download the .dmg and move Bridge to the Applications folder. On macOS 10.15+ you may need to allow the app in System Preferences > Security & Privacy. For macOS Sonoma and later, Gatekeeper will request approval to run unsigned components if necessary — approve only if you downloaded from the official site.
Linux
Bridge is available as a .deb and .rpm or can be installed via package managers on some distributions. You may need to add udev rules so non-root users can access USB devices. See the official docs for exact rule files and commands.
Browser
Most modern browsers (Chrome, Edge, Firefox) can connect to Trezor Suite through Bridge. Note: browser WebUSB has limited support; Bridge helps provide a reliable cross-browser experience.
Step 3 — confirm Bridge is running
After installation, a small background process (service) will be active. On Windows, check Services; on macOS, check Activity Monitor; on Linux, check systemd. Trezor Suite or the web app should now detect your device when connected via USB.
Using Bridge with Trezor Suite and third-party wallets
Trezor Bridge works seamlessly with Trezor Suite (official app) and many third-party wallets (like Electrum, Exodus, and web dApps). When connecting a device, the wallet will prompt you to allow access — confirm on the device to complete pairing. Bridge ensures the traffic between the software and the device is routed securely.
Developer & integration notes
Developers building integrations can use the Trezor Connect API or communicate directly over the protocol Bridge exposes. Bridge simplifies compatibility by abstracting platform-specific USB intricacies. Always rely on the official API and libraries to avoid security pitfalls.
Security considerations
Trezor Bridge is designed to never expose private keys or recovery seeds. It only forwards signed requests between the Trezor device and host software. Nonetheless, there are best practices to reduce risk:
- Only install Bridge from official sources and verify downloads.
- Keep Bridge and Trezor Suite updated — updates include security fixes and improvements.
- Use strong OS account passwords and avoid running unknown software while using your wallet.
- Always verify transaction details on the Trezor device's screen before confirming.
Privacy & networking
Bridge itself does not collect private keys or transaction details centrally; however, wallets you use may communicate with network nodes or third-party APIs. Understand the privacy properties of the wallet and node you use (SPV, full node, or third-party service).
Troubleshooting common issues
Here are common issues and remedies when Bridge or device connectivity misbehaves.
Device not detected
- Try a different USB cable and USB port (use a data-capable cable).
- Restart Trezor Bridge service and the Trezor Suite app.
- On Linux, ensure udev rules are installed and your user is in the plugdev group (or follow distro-specific instructions).
Permission prompts or driver warnings
Operating systems may request permission to load drivers or to allow apps to access USB devices. Grant permissions only when you're sure the installer is official. On macOS, approve apps in System Preferences; on Windows, allow driver installation when prompted.
Bridge updates fail
If update fails, uninstall Bridge, download the latest installer from the official site, and reinstall. Preserve any settings if you wish, but note Bridge configuration is minimal — most data lives on your Trezor device and in the wallets you connect to.
Advanced tips
Power users and organizations can benefit from these advanced suggestions:
- Use dedicated machines for managing large holdings — minimizing installed software and exposure reduces attack surface.
- Pair Trezor with a full node for enhanced privacy and trustlessness when broadcasting transactions.
- For developers, use testnets and emulators during development to avoid risking real funds.
- Consider using hardware wallets in combination with multisig setups for enterprise-grade security.
FAQ
Does Bridge store my recovery seed?
No. Bridge doesn't store or transmit recovery seeds. Your seed never leaves the Trezor device unless you explicitly enter it into an unsafe environment (which you should never do).
Can I use Bridge on multiple computers?
Yes — install Bridge on each computer you want to use. Each installation is local to that machine.
Is Bridge required?
For many desktop and web experiences, yes. Some integrations may use WebUSB or other protocols, but Bridge provides the most reliable cross-platform experience.
Compatibility table
| Platform | Package | Notes |
|---|---|---|
| Windows | .exe | Recommended installer; admin rights may be required. |
| macOS | .dmg | Gatekeeper approval may be needed; notarization details on site. |
| Linux | .deb, .rpm | Udev rules required for non-root USB access. |
| Browser | Bridge background service | Supports Chrome, Edge, Firefox via Bridge + Trezor Suite. |
Release notes & change history
Bridge releases include bug fixes, performance improvements, and compatibility updates. The official download page links to the changelog for each release with security and release dates. If you're managing devices in an organization, subscribe to official channels for release notifications.
Support & contact
For unresolved issues, contact official Trezor Support. Never share your recovery seed or PIN in support requests. Provide logs and diagnostic info only as instructed by support pages or staff.
Glossary
- Bridge
- The background service that manages USB communication with your hardware wallet.
- Trezor Suite
- The official desktop/web application for managing wallets and firmware updates.
- Udev rules
- Linux configuration that controls device permissions for USB devices.
Legal & safety disclaimers
This guide is an informational resource and not a replacement for official documentation. Always follow the instructions and downloads provided on the official Trezor website. Use hardware wallets responsibly — losing access credentials or recovery seeds can result in permanent loss of funds.