What is Trezor Bridge?
The essential connector between your browser and your Trezor Hardware Wallet
Trezor Bridge is a lightweight, secure application that acts as the communication layer between your computer and a Trezor Hardware Wallet. When you visit Trezor.io/start or open Trezor Suite, Trezor Bridge enables safe message exchange, signing transactions and performing device setup without exposing private keys. Think of it as a tightly controlled gateway: it forwards requests from web apps like Trezor Login prompts, verifies device legitimacy, and makes sure only intended commands reach your hardware device.
Why it matters
Security for crypto begins at the device. Trezor Hardware Wallet keeps your private keys offline — but software still needs to talk to the device. Trezor Bridge minimizes attack surface by using a local, trusted bridge rather than exposing USB endpoints directly to browsers. When you start at Trezor Io Start the installer emphasizes safety checks and official downloads to protect the whole flow.
How it works — short version
- Install Trezor Bridge from the official site (recommended path: Trezor.io/start).
- Connect your Trezor Hardware Wallet via USB and open Trezor Suite or a compatible web wallet.
- Bridge authenticates the device and relays encrypted commands for actions like Trezor Login, transaction signing and firmware updates.
Best practices for safe use
Always download installers from official sources and verify signatures when available. Use the official Trezor.io/start page to get the correct version of Trezor Bridge and run it with administrator permissions only when required. Pair the bridge with the official Trezor Suite or verified integrations rather than random browser extensions. Keep firmware and Suite updated to reduce risk.
Compatibility notes
- Trezor Bridge runs on Windows, macOS and Linux in current releases.
- Some browsers may prefer using the Trezor Suite app instead of directly accessing the device via web interfaces; Suite communicates via Bridge.
Common troubleshooting
If your device does not appear in Trezor Suite or a login flow:
- Restart Trezor Bridge and replug the hardware device.
- Check that you installed Bridge from Trezor.io/start and not a third-party site.
- Try a different USB cable or port — some cables are power-only.
- Ensure your OS hasn’t blocked the Bridge app; allow it in system security settings.