We just released a Google Sign-In plugin for Capacitor that covers Android, iOS, and Web with a single API.
Here’s what it supports:
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Authentication with ID tokens (JWT) for backend verification
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Optional OAuth authorization with access tokens and server auth codes
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User profile retrieval (email, name, profile picture)
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Nonce support to prevent replay attacks
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Compatible with the Apple Sign-In and OAuth plugins
It’s lightweight with just a single dependency and uses the Credential Manager API on Android, the Google Sign-In SDK on iOS, and the standard OAuth flow on Web.
Happy to answer any questions or hear feedback.