Trezor Bridge is the essential communication layer that connects your Trezor hardware wallet to your desktop applications, web browsers, and the Trezor Suite. Acting as a secure “bridge” between your local device and your Trezor hardware wallet, it ensures all transactions, authorizations, and firmware communications are transmitted safely — without exposing your private keys or compromising your digital assets.
Without Trezor Bridge, your browser cannot recognize or directly communicate with your Trezor wallet. By securely handling USB connections, managing permissions, and validating cryptographic handshakes, Trezor Bridge enables seamless integration between your physical device and the digital interfaces where you manage your cryptocurrency portfolio.
Modern web browsers have tightened their security models, restricting direct access to USB devices. While this protects users from malicious websites, it also prevents legitimate applications — such as the Trezor Suite or supported third-party apps — from interacting with your hardware wallet directly. Trezor Bridge solves this by running as a lightweight, secure service on your computer that handles communication locally, ensuring that your wallet remains isolated from potential online threats.
When you connect your Trezor device to your computer via USB, Trezor Bridge immediately recognizes it and establishes a secure local connection. This connection is cryptographically verified, meaning that only legitimate Trezor Suite or integrated apps can access your wallet through it.
Trezor Bridge uses localhost communication (127.0.0.1) as the channel through which your browser or app sends and receives messages. These messages contain commands such as verifying your address, signing transactions, or updating firmware. Importantly, your private keys never leave the hardware wallet — the Bridge simply passes encrypted requests and responses back and forth.
Trezor Bridge is available for Windows, macOS, and Linux. Installation takes less than a minute, and no complex configuration is required. Once installed, the service automatically starts whenever your system boots up. It runs silently in the background, consuming minimal system resources.
After installation, connect your Trezor device via USB, open suite.trezor.io, and the Bridge will automatically detect your wallet. No browser plugins or manual drivers needed — just plug, verify, and go.
Trezor Bridge has been built from the ground up with security as its foundation. All operations happen locally, with zero exposure to external networks or third-party APIs. It employs digital signature verification to ensure authenticity and prevents any data interception or spoofing attempts.
Since its introduction, Trezor Bridge has undergone multiple independent audits and open-source reviews. Its transparent codebase allows the global security community to verify every line for vulnerabilities, ensuring that trust is based on verification, not marketing claims.
Trezor Bridge is designed to run quietly and efficiently. It consumes less than 50MB of memory and requires no ongoing internet connectivity. Once installed, you’ll rarely notice it running — until it’s time to connect your wallet or perform a transaction.
Every action, from signing a Bitcoin transaction to verifying an Ethereum contract address, passes through Trezor Bridge’s local encryption layer, ensuring reliable performance even under heavy workloads. Frequent background updates keep compatibility with browser changes and OS updates without requiring user intervention.
If your browser or Trezor Suite does not detect your device, the most common fix is simply reinstalling the latest version of Trezor Bridge. You can also ensure the service is running by checking your system tray or activity monitor.
127.0.0.1 in your local firewall if applicable.Regular updates are pushed automatically through official channels. Updates include compatibility fixes for new operating system versions, security patches, and performance optimizations.
Trezor Bridge is open-source software, just like the rest of the Trezor ecosystem. This means that anyone can inspect, audit, and contribute to its codebase. Transparency is not just a slogan — it’s the foundation of user trust and digital sovereignty.
Developers can integrate Bridge functionality into their own tools using the public Trezor Connect API. This enables third-party wallets, DeFi dashboards, and blockchain explorers to offer secure hardware wallet support without ever compromising user data.
By using Trezor Bridge, you’re joining a global movement of crypto users who believe in self-custody, transparency, and freedom of choice. Together, we’re building a financial future where you — and only you — control your money.
Stay informed, engage with the Trezor community, and never stop learning about the best security practices in cryptocurrency management.
Connect your Trezor hardware wallet securely to Trezor Suite and supported browsers. Choose your operating system below: