Trezor Bridge® — Connect Your Trezor to Web Browsers

Trezor Bridge® is the official, lightweight application that securely links your Trezor hardware wallet with modern web browsers and dApps. It creates a trusted, local communication channel so you can manage crypto assets in-browser while keeping private keys isolated on the device.

Why Trezor Bridge® matters

Hardware wallets keep private keys offline to protect them from malware and phishing. When you use browser-based wallets or decentralized apps, a secure translator is needed to relay requests without exposing secrets. Trezor Bridge® performs that role — it runs locally on your machine, receives requests from a web page, and forwards them to your connected Trezor device. Crucially, any action that affects funds must be physically confirmed on the device itself.

Key features

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Device-level confirmations
All transactions and key operations require approval on the physical Trezor — preventing remote actors from signing on your behalf.
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Cross-platform
Available for Windows, macOS and Linux with a small system footprint and automatic compatibility checks.
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Browser compatibility
Works with Chromium-based browsers and Firefox via the Bridge API or WebUSB integrations adopted by many wallets and services.
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Automatic updates
Bridge can update to maintain security and interoperability as browsers and wallets evolve.

How it works (brief)

When you open a compatible web wallet, it detects Trezor Bridge® running on your computer. The wallet sends a request to Bridge, which then communicates with your device over USB. The device displays transaction details for you to verify and confirm manually — only then will the signed data be released back through Bridge to the web application.

Security reminders

  • Download Bridge only from the official Trezor website and verify checksums when provided.
  • Keep both device firmware and Bridge updated for the latest security fixes.
  • Never type or store your recovery seed on a computer — only use the device when prompted during setup.
  • If you use a passphrase, treat it as a separate secret and store it securely; losing it can make funds inaccessible.

Integrations & compatibility

Trezor Bridge® integrates with the official Trezor Suite and many third-party web wallets and services that support the Bridge API or WebUSB. Developers can use the Bridge interface to build secure web integrations while keeping signing operations confined to the hardware device.

Developer note

Developers building wallet interfaces should follow best practices: present clear transaction details to users, avoid auto-signing, and respect users’ device prompts. Bridge acts as a trusted local service — it is not a replacement for careful UX and security design on the web side.

Trezor Bridge® for Chrome, Brave & Firefox — A Complete …

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