What is Trezor Bridge?
Trezor Bridge is software that runs on your computer and helps supported web applications communicate with a Trezor hardware wallet. You can think of it as a translator between a browser-based wallet interface and the physical device you connect over USB. It is not the wallet itself, and it is not a place where your cryptocurrency is stored.
When you open a compatible wallet in a browser, that site needs a way to detect your Trezor, request information, and send unsigned transaction details to the device for review. Bridge provides that communication path on supported systems and browsers. Once a request reaches your Trezor, the device displays the important details so you can verify and approve them physically.
The distinction matters: your assets remain on their respective blockchains, while the private keys used to authorize transactions are protected by your hardware wallet. Bridge helps software talk to the device; it does not replace the device’s security checks or your responsibility to verify what appears on its screen.
In a sentence: Bridge is a local communication layer—not an exchange, wallet, recovery tool, or cloud service.
How does the connection work?
After installation, Bridge runs quietly in the background. A compatible browser wallet can ask it to locate a connected Trezor and pass along supported requests. The exact connection method depends on your operating system, browser, and the wallet application you are using. Some modern browsers and applications can communicate directly with hardware devices, so Bridge is not required in every setup.
For a typical transaction, the browser prepares the details and sends a request through the connection layer. Your Trezor independently processes the request and presents the relevant information on its own screen. Check the destination and transaction details on the device itself—not just in a browser window—before confirming with its buttons or touchscreen. Your private keys should not be sent to the browser as part of this process.
When do you need Bridge?
You need Bridge when the wallet application you have chosen requires it to detect or communicate with your Trezor on your particular computer and browser. If the application prompts you to install Bridge, or does not detect your device and its official instructions specify Bridge, use the installation steps below.
You may not need it when using Trezor Suite, or when your browser and wallet application support another direct device-connection method. Requirements can change as browser support and Trezor software evolve. Follow the current instructions for the specific wallet and operating system you intend to use rather than relying on an old forum post or assuming every browser behaves the same way.
If a connection fails, installing Bridge is one possible fix—but start by confirming that the wallet and browser are compatible, your device is unlocked, and the cable supports data rather than charging only.
Install and connect, step by step
Download Bridge only through Trezor’s official website. Use the operating-system-specific installer and follow the on-screen directions; macOS, Windows, and Linux may present different prompts. If you are unsure whether Bridge is already installed or which package applies, check Trezor’s current support documentation before proceeding.
- Start from the official source.
Type trezor.io/trezor-bridge into your browser yourself. Avoid sponsored download results, file mirrors, and links from unsolicited messages.
- Choose your operating system.
Download the current Bridge installer from Trezor’s official page, then install it using the standard prompts for your computer.
- Reconnect and unlock your device.
Use a reliable data-capable USB cable, connect your Trezor, and unlock it with your PIN if prompted.
- Open your intended wallet.
Visit the official wallet application, choose its connect-device option, and respond to the browser’s device-access prompt if one appears.
- Verify on the Trezor screen.
Review details on the physical device before approving. If anything looks unfamiliar, reject the request and stop.
Links on this page are informational. Check the address bar carefully before downloading software or connecting a wallet.
Security best practices
A hardware wallet protects your keys, but safe habits still matter. Install Bridge only from Trezor’s official domain, keep your operating system and browser up to date, and use wallet applications you have independently verified. A padlock or familiar-looking logo alone does not prove a site is genuine; inspect the full domain before you connect.
Your recovery seed is the master backup to your wallet. Never type it into a computer, website, Bridge window, search engine, support chat, or digital document. Genuine connection software does not need it. Anyone who obtains your seed may be able to take control of the associated funds, even if your Trezor is unplugged. Keep the backup offline and follow the official device instructions for recovery.
Before confirming a payment, compare the recipient and other transaction details on the hardware wallet display. If your computer shows an address but your device shows something different, do not approve. Treat unexpected firmware prompts, urgent “support” messages, and requests to share recovery words as warning signs. Disconnect and consult official Trezor support by navigating to its website independently.
Common connection issues
Your device is not detected. Unlock it, reconnect the cable, try another USB port, and confirm the cable supports data. Close duplicate wallet tabs and respond to any browser permission prompt. Then check that Bridge is installed, running, and supported by your chosen browser and wallet.
The browser says another application is using the device. Close other wallet apps or browser tabs that may have an active hardware-wallet connection, unplug the device briefly, and try again. Restarting the browser or computer can also clear a stuck connection.
Bridge appears installed but nothing changes. Review the official instructions for your operating system, confirm that you installed the latest compatible version, and restart the browser after installation. On managed work or school computers, device permissions or security software may restrict USB access; contact the administrator rather than bypassing protections.
Still stuck? Use the current troubleshooting guidance on Trezor’s official support site. Never let a stranger remotely control your device or ask you to disclose your recovery seed to “repair” a connection.
Frequently asked questions
Is Trezor Bridge the same thing as Trezor Suite?
No. Trezor Suite is Trezor’s wallet application. Bridge is a separate background communication service used by compatible browser-based wallet experiences. You may not need Bridge when using Suite or a browser that supports a direct connection.
Does Bridge store my recovery seed or coins?
Bridge is a connection layer, not a wallet or custodian. Your recovery seed and private keys belong on your Trezor device. Never enter your recovery seed into a website, Bridge installer, chat, or support form.
Why is my Trezor not detected?
First check the cable and USB port, unlock and reconnect the device, and allow the browser’s device-connection prompt. Then check that the official Bridge service is installed and running and that your browser is supported. Close other wallet tabs before trying again.
Do I need Bridge on every computer?
Bridge must be installed on each computer where a compatible browser wallet needs it. If you switch computers or reinstall your operating system, check Trezor’s official setup instructions again rather than copying an installer from an unofficial source.
Software instructions can change. For the latest compatibility and installation details, verify with Trezor’s official support resources.
Trezor Support