Trezor Bridge is a lightweight desktop background application developed by SatoshiLabs, the creators of Trezor. It serves as a secure conduit between your Trezor hardware wallet and web browsers or desktop apps like Trezor Suite, Electrum, MetaMask, and more.Trezor Bridgebridge-faqs-trez.teachable.com
It replaces legacy browser extensions, using encrypted local communication to safely transmit messages and commands.bridge.trozre.combridge-docs-tczr.gitbook.io
Compatible across Windows, macOS, and Linux, and with major browsers such as Chrome, Firefox, Edge, and Safari.trezor-bridge-secure-faq.typedream.apphelp-bridgen-eng.teachable.com
Secure Communication
Browser environments increasingly restrict direct USB access. Bridge handles this securely by isolating USB communication from web contexts while encrypting data locally.Trezor Bridgetrezor-bridge-secure-faq.typedream.app
Broader Compatibility
Bridges gaps where WebUSB may not be supported—for example, in Firefox or privacy-focused browsers—ensuring reliable connectivity.faq-bridge-docs.teachable.comReddit
No Browser Extensions Required
Avoids the security risks associated with plugins. Bridge runs system-wide and transparently in the background.bridge.trozre.combridge-docs-tczr.gitbook.io
Auto Updates & Ease of Use
Bridge installs once, runs silently, and updates automatically—no need to manually manage versions.bridge-faqs-trez.teachable.combridge-docs-tczr.gitbook.io
You install and connect your Trezor device to your computer.
Open Trezor Suite (web or desktop) or a supported third-party app (like MetaMask).
The app sends requests (e.g., transaction signing) to Bridge via localhost.
Bridge relays these commands to your Trezor wallet over USB.
You confirm actions on the device itself—the sensitive data remains isolated in hardware.
Responses are sent back through Bridge to the app.Trezor Bridgetrezor-bridge-secure-faq.typedream.app
Bridge does not store your PIN, recovery seed, or private keys—these never leave your hardware device.Trezor Bridgehelp-bridgen-eng.teachable.com
It’s fully open-source, so the community can audit the codebase for transparency.faq-bridge-docs.teachable.com
Even if you install a compromised version (downloaded from unofficial sources), your hardware protections still stand—your device must physically confirm every transaction.Reddit
As of recent updates, Trezor Bridge is being phased out, especially when using Trezor Suite desktop, which includes built-in device communication and no longer requires Bridge.welcome-bridge-auth.groovehq.comtrezor.io
"Bridge is part of the connection fabric. You should always install the PROPER version..." —
Important to trust the official installer.