Trezor Bridge® | Connect Your Trezor to Web Browsers
Secure desktop-to-browser connectivity for hardware wallets — installation, usage, and best practices.
Overview
Trezor Bridge® is the small desktop helper that lets your computer and web browser communicate with a Trezor hardware wallet. It acts as a local server, exposing a secure, browser-accessible API so the Trezor device can sign transactions, manage accounts, and interact with web-based wallets and dApps without exposing your private keys.
Why Bridge matters
Modern browsers restrict direct USB access for security reasons. Trezor Bridge provides a vetted, minimal surface that safely relays USB communications between the Trezor device and authorized web applications. The result: strong isolation of private keys while enabling a user-friendly web experience.
Core features
Cross-platform support: Windows, macOS, Linux.
Transparent integration with web wallets and Trezor Suite.
Automatic updates and signed releases to ensure integrity.
Minimal attack surface — only local network (localhost) communication.
Quick-install (step-by-step)
Step 1 — Download
Visit the official Trezor download page and grab the Bridge installer that matches your OS.
Step 2 — Install
Run the installer, follow the prompts, and allow Bridge to run in the background. On some systems you may need admin rights.
Step 3 — Connect
Plug in your Trezor device. Open your preferred web wallet or Trezor Suite in your browser and follow the on-screen pairing prompts.
Troubleshooting common issues
Browser prompts and permissions
If your browser asks for permission to access the device, confirm it's from the expected page (check the domain). If a connection fails, restart the Bridge service and replug the device.
Ports and firewalls
Bridge listens on a localhost port. Local firewall rules can block it — ensure localhost communications are allowed. On Windows, temporarily disabling over-aggressive AV/firewall software can reveal whether it’s the cause.
Driver problems on older systems
Some legacy Windows installations may require a driver update or an additional step during installation. Always use the official installer.
Security best practices
Trezor Bridge is designed to avoid exposing private keys. Still, users should follow baseline security hygiene:
Only download Bridge from official Trezor domains (links below).
Keep your operating system and browser up to date.
Never enter recovery seeds into a browser or computer — seed entry belongs on the device only.
Verify software signatures when available and prefer signed installers.
Using with dApps and web wallets
When a web wallet requests a signature, the Trezor device will show exact transaction details on its screen. Always verify every field on the device display (recipient, amount, and fees) before approving.
Advanced tip — multiple browsers
Most modern browsers work fine with Bridge. If one browser behaves oddly, try another or check that browser extensions are not blocking localhost connections.
Developer & integration notes
Developers can integrate Trezor support by using web trezor-connect libraries or by delegating device communication to the Trezor Bridge API. The Bridge approach keeps web code simple while ensuring that sensitive operations happen only after explicit user confirmation.
API and app flow (high level)
Web app requests a connection through the Bridge API.
Bridge prompts the operating system to access the USB-connected device.
Trezor displays the transaction for user verification and signing.
FAQ — quick answers
Q: Is Bridge safe?
A: Yes — Bridge runs locally and only forwards device requests. The device shows all critical confirmations.
Q: Do I need Bridge if I use Trezor Suite?
A: Trezor Suite may use Bridge or other native connectors depending on platform — follow official instructions.
Note: Never share your recovery seed. Bridge does not and should not request the seed — if a page asks for your seed, it’s a scam.
Presentation summary & call to action
Trezor Bridge gives you the convenience of web-based wallets while preserving the isolation of a hardware key. Install only from official sources, keep software updated, and always verify actions on your physical Trezor screen. For a secure and modern crypto workflow, Bridge is an essential piece.