Learn what Trezor Bridge is, how to download it safely, install it, and troubleshoot common issues.
Download Trezor BridgeTrezor Bridge is a lightweight software component created by SatoshiLabs to act as a secure communication layer between your Trezor hardware wallet (Model T, Model One) and web-based applications or browser interfaces. Unlike conventional USB drivers or browser extensions, Bridge runs locally on your computer and relays only approved commands — private keys remain on the device at all times. :contentReference[oaicite:0]{index=0}
With modern browsers that natively support WebUSB, Trezor Bridge may not always be required. But for browsers or OS environments that lack robust USB support, Bridge ensures compatibility and stability. :contentReference[oaicite:1]{index=1}
Follow these steps carefully to download and set up Bridge securely.
Only download Trezor Bridge from official Trezor URLs, such as trezor.io/start
or the Bridge download page. Avoid third‑party mirrors or suspicious domains. :contentReference[oaicite:7]{index=7}
Select the installer that matches your operating system (Windows, macOS, or Linux). Check for checksums or digital signatures if they are provided to verify file authenticity. :contentReference[oaicite:8]{index=8}
Run the downloaded installer and follow on-screen instructions. On macOS, you may need to allow the application under System Preferences → Security & Privacy if the installer is blocked by Gatekeeper. :contentReference[oaicite:9]{index=9}
After installation, close your browser fully and then reopen it. Then navigate to suite.trezor.io
(or the intended web app) and connect your device. :contentReference[oaicite:10]{index=10}
Plug in your Trezor via USB, enter your PIN on-device, and grant permission on the browser when prompted. Always double-check transaction details shown on the physical device before approving. :contentReference[oaicite:11]{index=11}
Even with correct installation, you may run into issues. Here are common problems and fixes:
If macOS blocks the installer or driver extension, open System Preferences → Security & Privacy and allow the blocked item. You might also need to re-run the installer. :contentReference[oaicite:17]{index=17}
Some users report that even after installing Bridge, the web interface still prompts them to install it again — often due to misconfiguration or old versions lingering. :contentReference[oaicite:18]{index=18} In that case:
127.0.0.1
by default.) :contentReference[oaicite:21]{index=21}trezor.io/start
), never from third-party or unknown sources. :contentReference[oaicite:23]{index=23}You only need Bridge running when you are using the Trezor Suite web interface (or another web-based wallet) in a setup that does not natively support hardware USB (WebUSB). If you use the Trezor Suite desktop application, Bridge is typically unnecessary. :contentReference[oaicite:29]{index=29}
As web standards evolve, many modern browsers now support WebUSB or have native hardware wallet integration. Over time, the reliance on Bridge is expected to lessen. :contentReference[oaicite:30]{index=30} In addition, using the Trezor Suite desktop app is the recommended, full‑featured approach without needing Bridge at all. :contentReference[oaicite:31]{index=31}
Trezor Bridge is an essential tool for many users to enable a stable and secure communication channel between their browser and Trezor hardware wallet in environments that don’t fully support WebUSB. It ensures that your sensitive keys never leave your device, and that all confirmations happen directly on the Trezor screen.
To get started: download from the official site, install, restart your browser, connect your device, and proceed carefully—always verifying on-device details. By following best practices and staying updated, you can safely and reliably manage your crypto assets through browser-based interfaces.