Trezor Bridge®: The Official, Invisible Backbone of Trezor Security
Trezor Bridge® is the official communication software that silently and securely connects your Trezor hardware wallet (Model T, Safe 3, Safe 5, or legacy Model One) to Trezor Suite and supported third-party web applications. Without fanfare, it ensures that your private keys never leave the hardware device while still allowing seamless interaction with the modern web — a critical piece of infrastructure most users never notice until it works perfectly.
Released and maintained by SatoshiLabs since 2018 (replacing the older Chrome extension and Trezor Wallet web frontend), Bridge solved a fundamental problem: modern browsers phased out direct USB device access for security reasons. Bridge runs as a lightweight background process (Windows, macOS, Linux) and establishes an encrypted transport layer between your Trezor and any compatible website or desktop app via the WebUSB and HID protocols.
Key advantages of Trezor Bridge:
Zero trust required: Unlike browser extensions, Bridge never sees your private keys or seed phrases. All sensitive operations (signing transactions, viewing addresses) happen exclusively inside the Trezor chip.
Cross-platform & future-proof: One installer works across Windows 10/11, macOS 12+, and most Linux distributions (deb/rpm/AppImage packages available).
Supports both Trezor Suite desktop app and web version (suite.trezor.io) without manual switching.
Enables third-party integrations: MetaMask, Rabby, MyEtherWallet, Electrum, and dozens of DeFi dApps can connect directly to your Trezor when Bridge is running.
Silent updates: Bridge auto-updates in the background, keeping communication protocols current with the latest firmware requirements.
Installation is deliberately simple: download the official installer from trezor.io/bridge, run it once, and you’re done. A small “T” icon appears in your system tray (Windows/Linux) or menu bar (macOS). Green means ready; gray means no device detected. No account, no login, no telemetry by default — pure function.
For advanced users and privacy enthusiasts, Bridge supports headless operation on servers, Docker containers, and even remote machines via trezorctl (command-line tool). This makes it possible to sign transactions in air-gapped environments or automate workflows while keeping the device physically isolated.
Security is uncompromising:
All traffic between Bridge and the device is encrypted and authenticated.
Bridge refuses to run alongside unofficial or outdated versions.
Regular independent security audits are published on the official GitHub repository (github.com/trezor/trezord-go).
Since 2023, Bridge has also powered Trezor Expert Mode, allowing users to disable automatic firmware checks for fully offline, air-gapped verification workflows — a feature demanded by the most paranoid Bitcoiners.
In practice, most users install Bridge once and forget it exists. Yet without it, your Trezor would be limited to standalone seed backups and basic address generation. Bridge is the reason you can buy coffee with Bitcoin via a dApp, swap tokens on Uniswap, or manage an entire portfolio in Trezor Suite — all while your seed phrase never touches an internet-connected machine.
Trezor Bridge is free, open-source, and deliberately boring — exactly what critical security infrastructure should be.
Download the latest version directly from https://trezor.io/bridge One click. Lifetime peace of mind.