A lightweight, auditable bridge that links your Trezor hardware wallet to Web3 applications — keeping private keys offline while enabling modern dApp workflows.
As decentralized applications become more powerful, the need to interact with them safely becomes critical. Trezor Bridge creates a thin, verifiable boundary between browser-based dApps and your hardware signing device. Instead of letting the browser handle private keys, Bridge relays unsigned requests to your Trezor device where transaction details are shown and signing is performed locally. This preserves the strongest security guarantees of hardware wallets while enabling full dApp compatibility.
Bridge supports common browser wallet connection standards and developer hooks that let dApps discover accounts and request signatures without ever reading your private keys. The workflow is explicit, human-verifiable, and designed to reduce the most common user mistakes that lead to lost funds or accidental approvals.
Trezor Bridge was built with three goals: ensure private keys never leave the device, give users clear and verifiable signing prompts, and remain compatible with the ecosystem. Web pages can propose actions — approve token transfers, call smart contracts, or sign messages — but Bridge requires you to verify the action on your hardware. That human verification step is essential: even complex contract calls can be summarized into human-readable pieces so users can make informed decisions before approving.
The Bridge model separates responsibility: the dApp constructs or requests transactions; Bridge transports unsigned payloads; the hardware device validates and signs. This separation reduces risk from browser-based malware, malicious web pages, and accidental key exposure. For power users Bridge supports passphrase-protected hidden wallets and standard derivation paths so your existing accounts and multisig setups continue to work.
The device shows outputs, amounts, and contract data for you to review.
APIs and examples make trustworthy integrations straightforward for dApp developers.
Telemetry is opt-in and Bridge minimizes metadata by default.
The interaction is intentionally simple to make auditing and reasoning easy: (1) a dApp discovers Bridge via a standard discovery API, (2) the dApp requests account info or an unsigned transaction, (3) Bridge relays the unsigned payload to your device, (4) your device shows a human-readable summary and asks for confirmation, and (5) the signed payload is returned and broadcast. Because Bridge is open-source, every step can be inspected by security researchers and community auditors.
// Pseudocode
const bridges = await detectBridges();
const session = await bridges.connect();
const unsigned = dapp.prepareTx({to, data, value});
const signature = await session.sign(unsigned);
dapp.broadcast(signature);
This example demonstrates how easy it is for dApp authors to rely on Bridge for signing flows while preserving hardware-level security guarantees for users.
Bridge is designed to work with mainstream Trezor hardware and popular web browsers. It supports common wallet connection paradigms so most dApps can integrate with minimal changes. Because the protocol uses standard derivation and signing formats, it interoperates with wallets, multisig coordinators, relayers, and analytics tools. Developers and integrators are encouraged to follow the official docs and reference implementations on GitHub.
A — No. Bridge transmits only unsigned requests and returns signatures after you confirm them on your hardware device. Private keys remain on the Trezor device at all times.
A — Bridge supports modern Chromium-based browsers and Firefox and is compatible with official Trezor models. Check the official Bridge page for the most current compatibility notes.
A — No. Bridge ships with privacy-first defaults. Any telemetry is opt-in and clearly explained during installation.
A — Yes. Bridge integrates with multisig and custody orchestration flows. Developers can extend Bridge protocols to coordinate signatures across devices and automate safe enterprise workflows.
A — Official downloads and documentation are available on the Trezor website and docs portal. Useful links are below — always verify the domain before downloading software. Get started · Docs.
Use these official links for downloads, documentation, and community resources. Always confirm domain authenticity when downloading or installing software.