Trezor Bridge is a lightweight background utility that securely connects your web browser (or suite interface) to your Trezor hardware wallet. Instead of relying on outdated browser extensions, Bridge handles USB communication and acts as a secure proxy, ensuring your private keys never leave your device.
Modern browsers are moving away from plugin-based architectures, and security threats continue to evolve. Bridge ensures that even if browser APIs change, your connection to the device remains stable and secure. It isolates communication away from the browser, preventing malicious scripts from interfering with device operations. For your audience at https://trezor.io/, using Bridge is often essential to enable full wallet connectivity safely.
When you open a Trezor-compatible web interface, it checks for Bridge. If missing, you’ll be prompted to install it. Once installed, Bridge runs locally (e.g. on `127.0.0.1`) and listens for browser commands like “connect device,” “list accounts,” or “sign transaction.” These requests are forwarded securely to your Trezor device over USB. The user approves actions directly on the hardware. Because of this layered approach, browsers can never directly access your keys or sign anything without your confirmation.
Ready to enable secure connectivity? Here’s how to proceed: