Why Trezor Bridge matters
A secure intermediary that lets your browser communicate with Trezor hardware without exposing private keys. This guide explains setup steps, verification checks, troubleshooting, best practices, and frequent questions so you can connect safely.
Quick overview
When you plug a Trezor device into a computer, the browser cannot talk directly to the hardware under modern security rules. Trezor Bridge runs locally and securely, translating web application requests into messages the device accepts. It preserves offline key material on the device and routes commands through an encrypted local channel.
Supported platforms and compatibility
Trezor Bridge supports Windows, macOS, and many Linux distributions. It works with popular browsers that allow native messaging or USB access, such as Chrome and Chromium-based browsers, Firefox, and others when configured correctly. Always download the official Bridge package from the manufacturer to avoid counterfeit or malicious installers.
Install safely — step by step
Get the latest release from the device vendor website. Verify the URL carefully: phishing sites try to impersonate official domains. The manufacturer provides checksums and signatures to confirm integrity.
On Windows, double-click the installer and follow prompts. macOS users may need to approve the application in Security preferences. Linux users can install via the provided package or a distribution-specific repository.
After installation, verify Bridge is running. On many systems a small tray or menu icon appears. You can also confirm using terminal commands or the system process list. If available, use the vendor utility to check the running version.
Restart your browser and plug in the Trezor device. Avoid using untrusted USB hubs. Connect directly to the computer port to reduce interference and potential tampering risks.
Verify the connection and device authenticity
Open the official web wallet or companion application that uses Bridge. The page should request permission to access the device. Confirm the fingerprint shown in the application matches the device display. Never approve transactions or seed exports unless the device displays the exact details and you initiated the request.
Tip: If the site asks for seed words or a PIN from a web form, do not enter them. Your seed belongs only on the hardware screen during recovery.Troubleshooting common issues
Problems typically fall into connectivity, permission, or software mismatches. Use the checklist below when connection fails:
- Confirm Bridge service is running.
- Restart browser and, if needed, the operating system.
- Try different USB ports and a direct cable.
- Temporarily disable antivirus or privacy extensions to test whether they block communication.
- Reinstall Bridge from the official source if the version is outdated or corrupted.
Security best practices
Never share your recovery seed or PIN with anyone. Use a clean, malware-free computer when interacting with large balances. Keep firmware and Bridge updated to receive security patches. Consider a dedicated machine for critical transactions if you manage high-value holdings.
Enable two separate confirmations: approve actions using both the web interface and the device screen. Doing so prevents remote tampering from finalizing unauthorized transactions without physical approval.
Advanced settings and developer notes
Developers building integrations should use the vendor's recommended native messaging or USB protocols. Respect user consent flows and always include clear prompts describing required actions. For debugging, enable verbose logs only when necessary and avoid sharing them publicly; logs may contain metadata that could be abused.
FAQ
Q: Is Bridge required to use Trezor?
A: For browser-based interactions, Bridge enables secure communication. Some third-party tools use alternative transports, but the vendor recommends Bridge for typical workflows.
Q: Can Bridge see my private keys?
A: No. Bridge only forwards encrypted messages between the browser and the hardware. Private keys remain on the device; the bridge does not store them.
Q: How do I confirm Bridge is trustworthy?
A: Verify checksums and digital signatures shipped with official releases and compare them to vendor-provided fingerprints when available.
Final notes and recommended checklist
- Download official Bridge installer and verify integrity.
- Keep firmware and desktop software up to date.
- Approve transactions only on the physical device screen.
- Use direct USB connections and avoid public or unknown machines for recovery actions.
- Store recovery seed in a secure offline location and treat it as the ultimate access key.