What is Webauthn.io used for?

Webauthn.io is a demo site designed by Duo Labs to test WebAuthn and passkeys. It is a good fit for testing WebAuthn and passkeys, and learning about WebAuthn capabilities.

Is Webauthn.io open source?

Yes. Webauthn.io is open source under the BSD-3-Clause licence. Its source code is on GitHub at duo-labs/webauthn.io and is written mainly in Python.

Yes. Webauthn.io is open source, so the software itself is free to use. A managed cloud version is also available.

Can I self-host Webauthn.io?

Yes. Webauthn.io can be self-hosted on your own server or infrastructure.

What is Webauthn.io an alternative to?

Webauthn.io is an open-source alternative to Corbado and heylogin. Other open-source alternatives to Corbado include Keycloak, Hanko and Supabase Auth.

Is Webauthn.io actively maintained?

Yes. The most recent commit to Webauthn.io was on 6 August 2026. The project has 746 stars on GitHub.

Webauthn.io: open-source alternative to Corbado, heylogin

About Webauthn.io

WebAuthn.io is a demonstration of the WebAuthn specification. It allows users to register and authenticate using WebAuthn and passkeys. The site supports advanced settings for user verification, attachment, discoverable credential, attestation, and supported public key algorithms.

Key features

Register and authenticate using WebAuthn
Advanced settings for user verification, attachment, discoverable credential, attestation, and public key algorithms
Supports usernameless authentication
Debug mode available with ?debug=true URL parameter
Settings can be shared via URL

Good fit for

Testing WebAuthn and passkeys
Learning about WebAuthn capabilities

Built with: Python tools
Tags: webauthn; passkeys; demo; authentication; security

Webauthn.io: questions and answers

What is Webauthn.io used for?: Webauthn.io is a demo site designed by Duo Labs to test WebAuthn and passkeys. It is a good fit for testing WebAuthn and passkeys, and learning about WebAuthn capabilities.
Is Webauthn.io open source?: Yes. Webauthn.io is open source under the BSD-3-Clause licence. Its source code is on GitHub at duo-labs/webauthn.io and is written mainly in Python.
Is Webauthn.io free?: Yes. Webauthn.io is open source, so the software itself is free to use. A managed cloud version is also available.
Can I self-host Webauthn.io?: Yes. Webauthn.io can be self-hosted on your own server or infrastructure.
What is Webauthn.io an alternative to?: Webauthn.io is an open-source alternative to Corbado and heylogin. Other open-source alternatives to Corbado include Keycloak, Hanko and Supabase Auth.
Is Webauthn.io actively maintained?: Yes. The most recent commit to Webauthn.io was on 6 August 2026. The project has 746 stars on GitHub.