A concise, practical presentation explaining what Trezor Bridge does, why it matters, and how to use it safely with your hardware wallet.
Trezor Bridge is a small cross-platform helper application that lets your browser communicate with your Trezor hardware wallet. It acts as a secure bridge between the local device (your computer) and the Trezor device, enabling web-based apps and Trezor Suite to detect, connect, and interact with the hardware without exposing keys to the internet.
Modern web wallets and services often rely on browser APIs that need a trusted intermediary to talk to USB devices. Bridge provides a controlled, minimal surface for that communication — reducing friction while maintaining the security boundaries of the hardware wallet.
Trezor Bridge listens on a local port and exposes a restricted API that Trezor Suite and supported websites can use. When you initiate an action (e.g., sign a transaction), the command is sent through the Bridge to the Trezor device, which performs the cryptographic operation internally and returns a signed response.
Trezor Bridge supports major desktop browsers. For some setups, WebUSB is used directly; in other cases the Bridge provides a smoother compatibility layer.
If you need advanced troubleshooting, Bridge provides logs and a diagnostics page accessible locally. Use those only when instructed by official support.
Bridge is not a security boundary for your wallet — the Trezor device itself is. Treat Bridge as a convenience layer and follow basic hygiene: use authentic downloads, verify URLs, and keep your OS secure.
If Bridge behaves unexpectedly, or if your device asks for unusual input, stop and reach out to official Trezor support rather than trying random fixes found on forums.
Gather logs and include them when contacting support; this speeds up resolution and avoids accidental loss of funds during troubleshooting.
Use official links for downloads, documentation, and support. Below are 10 authoritative resources to bookmark.