Trezor Bridge: The Secure Link Between Your Wallet and Browser

What is Trezor Bridge?

Trezor Bridge is a lightweight software utility developed by SatoshiLabs that acts as a secure communication layer between your Trezor Hardware Wallet and supported web interfaces, especially Trezor Suite. It enables your browser to securely interact with your hardware wallet without compromising your private keys.

Instead of relying on outdated browser extensions or vulnerable direct web access, Trezor Bridge provides a seamless and encrypted communication channel, ensuring your cryptocurrency transactions are executed safely.

Why You Need Trezor Bridge

Many users mistakenly believe that connecting their Trezor device via USB is enough for it to work in the browser. However, to use Trezor with platforms like Trezor Suite Web, you need an intermediary tool — and that’s where Trezor Bridge steps in.

Benefits of using Trezor Bridge include:

  • Secure browser-wallet communication
  • Eliminates browser extension dependencies
  • Supports both Windows, macOS, and Linux
  • Keeps private keys offline at all times
  • Enables Trezor Suite web functionality

Without Trezor Bridge, your browser cannot detect or communicate with your Trezor device when using the web interface.

How Trezor Bridge Works

When installed, Trezor Bridge runs in the background of your operating system. It listens for calls from trusted web apps (like Trezor Suite Web) and securely forwards instructions to your Trezor hardware device. This communication uses strong cryptography to ensure data integrity.

At no point are your private keys or sensitive data exposed — they remain locked in the secure element of your Trezor hardware wallet.

Where to Download Trezor Bridge

To avoid malicious software and phishing attacks, only download Trezor Bridge from the official site:
 ➡️ Trezor.io/start

Once on the page:

  • Select your operating system (Windows/macOS/Linux)
  • Download the latest Bridge installer
  • Follow the installation steps on screen

Never download Trezor Bridge from third-party websites or unofficial links.

How to Install Trezor Bridge (Step-by-Step Guide)

Step 1: Visit Trezor.io/start

Go to the official setup page, which also offers complete setup instructions for your Trezor Model T or Trezor One.

Step 2: Download the Bridge

Choose your operating system and download the appropriate version. Make sure you’re downloading the latest release for compatibility with the current Trezor Suite.

Step 3: Run the Installer

Open the downloaded file and follow installation prompts. You may need to provide administrative permissions depending on your OS.

Step 4: Restart Your Browser

After installation, restart your browser. This ensures the newly installed Bridge is detected and enabled.

Step 5: Open Trezor Suite Web

Visit suite.trezor.io/web/ and connect your Trezor device via USB. The Bridge will automatically establish the connection between the web app and your hardware wallet.

Trezor Bridge vs Trezor Suite Desktop

Some users wonder whether Trezor Bridge is needed if they’re using Trezor Suite Desktop. The answer: No.

Trezor Suite Desktop includes direct device communication, so Trezor Bridge is only necessary when you're using:

  • Trezor Suite Web
  • Third-party wallets
  • Browser-based integrations

In short, Trezor Bridge is a web-specific utility. If you prefer using Trezor from your browser (especially on shared computers or devices without admin rights), the Bridge becomes essential.

Troubleshooting Common Trezor Bridge Issues

Trezor not detected in browser

Ensure:

  • Trezor Bridge is installed and running
  • USB cable is working properly
  • You’ve restarted your browser
  • You’re on a supported browser (Chrome, Firefox, or Edge)

Device shows "Connect your Trezor" repeatedly

This may be due to a missing Bridge or outdated firmware. Steps to resolve:

  • Update Trezor Bridge to the latest version
  • Restart the Bridge service
  • Check for Trezor firmware updates in Suite

Bridge not installing on macOS

macOS may block unsigned apps. Go to:
 System Preferences → Security & Privacy → Allow
 Then try installing again. You might also need to use Rosetta for Intel-based apps on Apple Silicon devices.

Is Trezor Bridge Safe?

Yes. Trezor Bridge is open-source, maintained by SatoshiLabs, and vetted by the crypto community. It uses end-to-end encryption between your browser and device. Private keys are never exposed or transmitted online.

Always ensure you're using the official version from Trezor.io/start and keep it updated to stay protected against any discovered vulnerabilities.

When Should You Use Trezor Bridge?

You’ll need to use Trezor Bridge if:

  • You prefer Trezor Suite Web over the desktop version
  • You're on a public/shared computer
  • You're using WebUSB-incompatible browsers or OS setups
  • You’re managing Trezor on Linux without native USB support

Trezor Bridge and Supported Browsers

Trezor Bridge is compatible with most major browsers, including:

  • Google Chrome
  • Mozilla Firefox
  • Microsoft Edge

Note: Safari is currently not fully supported for web-based Trezor Suite usage.

Keeping Trezor Bridge Updated

Trezor releases Bridge updates regularly to fix bugs and improve compatibility. To update:

  • Visit Trezor.io/start
  • Download the latest installer
  • Re-run the installer (no need to uninstall old version)

You can also check your current version by visiting http://127.0.0.1:21325/ in your browser. This is the local server address where Bridge runs.

Final Thoughts: Trezor Bridge is Essential for Web Access

If you're using Trezor Suite on the web, Trezor Bridge is a must-have utility that ensures secure, uninterrupted communication between your browser and hardware wallet. It's lightweight, secure, easy to install, and backed by the same security-first ethos as all Trezor products.