[FedCM] New Year, New Features: Multiple FedCM updates in Chrome 132

[FedCM developer newsletter]

Hello FedCM newsletter subscribers!

New year, new achievements! The first announcement in 2025 is a big one—the FedCM team has shipped some new features in Chrome 132, including:

• Mode API (formerly known as Button Mode): This API introduces a new active mode in which the sign-in flow is initiated by a user gesture. It works even when the user isn’t signed in to the IdP.

• Use Other Account API: This API enables users to use different accounts when signing in with FedCM.

• Continuation API bundle: This collection of features allows IdPs to implement more complex multi-step authorization flows, such as requesting additional permissions or verifying user information.

These updates represent a significant step forward for FedCM, and we believe they will make it even easier for developers to build comprehensible and user-friendly identity experiences on the web.

To learn more about these new features, check out the FedCM developer documentation:

• Mode API

• Use Other Account API 

• Continuation API bundle

  • Continuation API

  • Parameters API

  • Multiple configURLs

  • Custom Account Labels

We value your feedback

If you have any feedback about the API, file an issue. We will keep the FedCM developer documentation up to date, along with the accumulated update logs page.

Happy coding!