The **Trezor Bridge** is the small, essential piece of software that facilitates the **secure connection** between your computer’s operating system and your **Trezor hardware wallet**. It guarantees reliable, direct, and private **device communication**.
Download Trezor Bridge NowYour **Trezor hardware wallet** provides the highest level of **crypto security** by isolating your private keys. The **Trezor Bridge** ensures that the communication path to this secured device is stable, local, and free from common web vulnerabilities. It is the trusted messenger for all critical interactions.
The Bridge prevents communication data from ever leaving your local machine's network. It runs on a local port (e.g., localhost:21325), ensuring that the transaction data sent to the **Trezor device** and the digital signature returned remains isolated from the public internet.
Modern browsers often cannot speak directly to USB devices due to security sandboxing. The **Trezor Bridge** acts as a standardized translation layer, ensuring smooth **Trezor device recognition** and function across Windows, macOS, and various Linux distributions.
The most critical role of the Bridge is guaranteeing the integrity of the **transaction signing** process. It ensures the commands sent from **Trezor Suite** reach the device instantly and accurately, allowing for the immediate on-device confirmation required for secure fund transfers.
When upgrading your **Trezor hardware wallet** firmware, a stable and reliable connection is non-negotiable. The Bridge ensures the large data transfer occurs without corruption or interruption, which is vital for maintaining the operational integrity and **crypto security** of your device.
By streamlining the connection protocol, the Bridge eliminates frustrating setup issues and delays. When you plug in your Trezor, the Bridge is immediately active, leading to faster **device communication** and a smoother overall **crypto management** experience within Trezor Suite.
Like all core Trezor software, the **Trezor Bridge** source code is publicly available. This open-source nature allows the global security community to audit the code, reinforcing trust in its function as a secure and non-malicious communication pathway.
The **Trezor Bridge** operates as a daemon, meaning it is a persistent background service running on your computer. When Trezor Suite needs to interact with your physical device, it doesn't try to use complex USB libraries; instead, it sends a simple HTTP request to the Bridge's local endpoint.
The Bridge is the only component licensed to interact directly with the lower-level **USB communication** protocols. It receives the request (e.g., "Sign this transaction"), translates it into the language your Trezor understands, passes it to the device, and then relays the device's response (the digital signature) back to **Trezor Suite**. This architecture compartmentalizes complexity, making the system more secure and significantly more robust across diverse computer setups.
It is the unseen guardian that maintains the integrity of the **cold storage** principle—the separation of keys from the internet—by confining all interactions to the trusted physical environment.
Request: Trezor Suite (HTTP) → Bridge (Daemon) → Trezor Device (USB)
Yes. Even the desktop version of **Trezor Suite** benefits from the standardization and reliability provided by the **Trezor Bridge**. It guarantees a smoother and more reliable communication stream with your **Trezor hardware wallet**.
Always download the **Trezor Bridge** directly from the official **Trezor website**. It is typically offered as part of the initial Trezor Suite setup, but standalone installers are available for Windows, macOS, and Linux to ensure your **secure connection** is established correctly.
First, ensure the **Trezor Bridge** is running in the background. If the issue persists, try unplugging and re-plugging your **Trezor device**. If the problem continues, a simple reboot of your computer often resolves underlying OS driver conflicts, ensuring the **secure communication** is restored.