A lightweight, auditable bridge that connects your Trezor hardware wallet to Web3 applications — preserving offline keys and delivering safe signing workflows.
Trezor Bridge is a minimal, secure connection layer designed to let web-based decentralized applications communicate with your Trezor hardware wallet. Rather than exposing private key operations to the browser, Bridge relays unsigned requests to your device for on-device verification and signing. This keeps the private key material completely isolated, while still allowing modern dApps to request signatures, discover accounts, and interact with smart contracts.
Bridge is built for users who want the convenience of web apps — swapping, earning yield, or interacting with NFTs — without surrendering custody. The bridge supports common wallet connection standards, developer hooks, and clear UX signals so users can always verify exactly what they are signing.
The Web3 world is highly composable: wallets, dApps, relayers, and aggregators interact in complex ways to provide user experiences that were unheard of a few years ago. But composition also introduces risk — especially when signing authority is unclear or when browsers interact directly with private key material. Trezor Bridge creates a thin, verifiable boundary between browser-based dApps and your secure device. Instead of exposing signing operations to the web page, Bridge relays unsigned payloads to the device, shows a human-readable summary on-device, and only returns a signature after you confirm the operation.
Trezor Bridge is guided by three principles: never transmit private keys, always require human verification before signing, and make the protocol auditable. The device displays recipient addresses, amounts, and contract calls (when feasible) in plain language so users can independently verify actions. Bridge supports passphrase-protected hidden wallets and standard derivation paths, making it compatible with your existing Trezor setup.
Bridge only sends unsigned transactions to your device; keys remain on hardware.
SDKs and examples make it straightforward for dApps to integrate safe signing flows.
Telemetry is opt-in and Bridge minimizes metadata collection by default.
The flow is intentionally simple so users and developers can reason about it: 1) Install Bridge and connect your Trezor hardware. 2) When a dApp requests a signature, it sends an unsigned payload to Bridge. 3) Bridge relays that payload to the Trezor device. 4) Your device displays the transaction details and asks for confirmation. 5) After you manually confirm, the device returns a signature and Bridge sends it back to the dApp for broadcasting. This separation ensures the host environment never holds private key material.
Developers can detect Bridge with standard discovery APIs, create signing sessions, and parse signing responses. For contract interactions Bridge can surface human-friendly calldata summaries so users clearly understand the intent of a transaction. Example code and integration guides are available on the official docs and GitHub repositories.
// Pseudocode example
const bridges = await detectBridges();
const session = await bridges.connect();
const unsignedTx = dapp.prepareTransaction(...);
const signature = await session.sign(unsignedTx);
dapp.broadcast(signature);
Trezor Bridge is open-source and designed for external review. Audits and changelogs are published so security researchers and community members can verify how connection logic and signing orchestration are handled. Privacy is baked into the defaults — Bridge collects minimal runtime data and requires explicit opt-in for any telemetry. The combination of open code, public audits, and clear UX contributes to a high level of community trust.
A — No. Bridge transmits only unsigned requests and returns signatures after you confirm them on-device. Private keys remain securely stored on your Trezor hardware wallet.
A — Bridge supports official Trezor hardware devices and is compatible with modern Chromium-based browsers and Firefox. Check the official Bridge page for the latest compatibility notes.
A — No. Bridge ships with privacy-first defaults. Telemetry, if present, is opt-in and clearly explained during installation and setup.
A — Yes. Bridge can be integrated into multisig setups and enterprise signing flows. Developers can extend Bridge protocols to coordinate signatures across multiple devices or orchestrate custody operations.
A — Official downloads and docs are available at the Trezor site and docs pages. For community help see r/trezor and the Trezor blog. Always verify the domain before downloading.
Use these official links to get Bridge, read the docs, and engage with the community. Always ensure you are on official domains when downloading or installing software.