Trezor Bridge® — Connect Your Trezor to Web Browsers

Secure USB communication for Trezor hardware wallets • Simple, private, and browser-friendly

Trezor Bridge is the official desktop companion that lets your web browser talk securely to your Trezor hardware wallet. It provides a stable and private channel between the device and web interfaces such as Trezor Suite, web-based dapps, and exchange integrations — so you can manage crypto without exposing private keys to the internet.

What is Trezor Bridge and why it matters

Trezor Bridge is a lightweight local service that runs on your computer and bridges USB communication between your Trezor device and browser-based applications. Historically, browsers' native USB restrictions made direct communication difficult or inconsistent. Bridge solves this by offering a small, trusted intermediary — without sending any sensitive data off your machine.

Key benefits

Privacy-first: All signing happens on your Trezor device; Bridge only passes encrypted messages between the browser and the device.
Cross-browser support: Works with modern browsers that support WebUSB/WebHID or use Bridge as a fallback.
Easy installs & updates: Small installer with automatic update checks to keep compatibility current.
Developer-friendly: Exposes stable APIs for dapp integrations and tooling.

How to install Trezor Bridge

Installation is simple. Download the installer for your platform, run it, and your browser will be able to detect the Trezor device automatically.

Quick steps

Download the latest Bridge for your OS.
Run the installer and follow on-screen prompts.
Restart your browser if prompted.
Open the web app (for example, Trezor Suite) and connect your device.

Example: on macOS and Windows the installer configures the local service; on Linux follow the distro-specific instructions provided in the download page.

Get Trezor Bridge

Troubleshooting & common issues

Most connection issues are solved by a few straightforward checks.

Checklist

Ensure Bridge is installed and the service is running.
Try a different USB cable — not all cables carry data reliably.
Make sure the browser has permission to access the device (accept the prompt).
Temporarily disable VPNs or security software that may block local ports.
Reboot your computer and reconnect the Trezor device.

If problems persist, consult the official troubleshooting pages or the community forums for step-by-step guidance.

Security model — what Bridge does and doesn't do

Trezor Bridge is deliberately minimal by design. It never stores private keys, seeds, or transaction payloads on disk beyond ephemeral runtime buffers. All cryptographic operations — PIN verification, transaction signing, and seed derivation — are performed inside the device's secure environment.

Important security notes

Trezor Bridge acts only as a local messenger; it does not access the network or upload secrets.
Always download Bridge from official sources to avoid tampered installers.
Keep your device firmware up to date to benefit from the latest protections.

Developer & integration notes

Developers building web integrations can rely on Bridge as a stable layer for USB/HID communication. The Bridge API abstracts transport details so your app can focus on UX and transaction flows.

For integration documentation and API references, consult the developer pages on the Trezor website or the GitHub repositories maintained by the Trezor team.

FAQ

Is Bridge required?

No — modern browsers supporting WebUSB/WebHID may connect directly, but Bridge remains the recommended fallback for the widest compatibility and a smoother user experience.

Will Bridge send my data to Trezor?

No. Bridge is a local service. It does not transmit private data to remote servers.

How do I update Bridge?

Bridge installs include automatic update checks. You can also re-download and run the latest installer from the official site.