Made with GrigoraA lightweight background application facilitating seamless, encrypted data exchange between your physical Trezor hardware wallet and supported web browsers without reliance on outdated browser extensions.
Compatible with Windows 10/11, macOS 10.15+, and modern Linux distributions (deb/rpm).
Trezor Bridge is an essential software utility designed to bridge the gap between your physical Trezor hardware wallet (including Trezor Model One and Trezor Safe series) and computer browsers. Historically, hardware devices communicated via browser extensions like NPAPI or Chrome apps, both of which presented significant security liabilities and compatibility bottlenecks. Trezor Bridge operates quietly as a local background daemon that uses a local web server interface (typically on localhost:21325) to transmit signed cryptographic commands securely without revealing private keys or granting arbitrary host access.
While native WebUSB protocols now allow certain modern browsers like Google Chrome and Chromium builds to access USB devices natively, millions of users rely on privacy-centric alternatives such as Firefox, Safari, or custom Linux environments where WebUSB is restricted or unavailable. In these situations, Trezor Bridge guarantees universal cross-platform operability. It establishes a sandboxed, TLS-protected conduit where Trezor Suite and supported decentralized applications (dApps) can verify transactions, sign smart contracts, and check token balances while ensuring deterministic zero-trust architecture.
The application code runs entirely open-source, allowing comprehensive security audits by external cryptographers and developers. Trezor Bridge does not hold access credentials, seed phrases, or private spend keys; its role is strictly that of a low-level packet relayer between the USB human interface device (HID) and HTTP API endpoints. Every outbound command received from the web page must still be manually confirmed and signed with physical buttons on the device screen itself, rendering automated malware attacks and phishing scripts powerless against your vault.
Setting up the utility takes under a minute: 1) Download the official installer matching your operating system architecture. 2) Run the installer with standard user permissions. 3) Connect your hardware wallet via official USB cable. 4) Open Trezor Suite in your preferred browser. The daemon initializes automatically upon boot as a background service without opening unwanted windows, ensuring an uninterrupted cold storage management experience.
No. The standalone Trezor Suite desktop software contains integrated driver drivers and built-in direct communication modules. You only require Trezor Bridge when managing assets via the browser-based Trezor Suite or third-party web interfaces like MetaMask or MyCrypto in non-WebUSB environments.
Yes. Trezor Bridge operates with minimal system memory footprint, listens strictly on an isolated local loopback port, and does not retain state or transmit analytics without permission. It maintains complete compliance with hardened cryptographic best practices.