Google Identity Services is migrating to FedCM APIs. Follow the
migration guide to review potential changes and avoid negative impacts for user sign-in to your website.
Sign In With Google Release Notes
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This page contains a list of the new features and significant changes to the
Google Identity Services JavaScript library.
2025-03-17
2024-12-01
2023-12-21
Federated Credential Management (FedCM) Beta for Google Identity
Services was launched in August 2023. Many developers tested the API and have
provided valuable feedback.
One response Google heard from developers is about the FedCM automatic sign-in
flow user gesture requirement. For improved privacy, Chrome requires users to
reconfirm that they want to sign in to the website with Google Account in each
Chrome instance even if the user approved the website prior to the FedCM
rollout. This one-time reconfirmation is achieved through a single click of
the One Tap prompt to demonstrate user intent to sign-in. This change may
cause an initial disruption in automatic sign-in conversion rates for some
websites.
Recently in M121, Chrome made a change to the FedCM automatic sign-in
flow UX. The reconfirmation is only required when third-party cookies are
restricted. This means:
Before third-party cookie restrictions are ramped up to 100% (see Privacy
Sandbox News and Update page for latest timeline),
FedCM automatic sign-in does not require reconfirmation for returning users.
If users reconfirm with FedCM UI, this reconfirmation will count toward the
user gesture requirement.
FedCM automatic sign-in will check the confirmation status when the
third-party cookies are manually restricted by users today, or by default in
future Chrome.
With this change, we recommend all automatic sign-in developers migrate to
FedCM as soon as possible, to reduce disruption to automatic sign-in
conversion rates.
For the automatic sign-in flow, GIS JavaScript won't trigger FedCM on an older
Chrome (before M121), even if your website chooses to opt-in to FedCM.
2023-08-15
2022-04-12
2021-4-13
2021-03-17
2020-3-24
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-05-19 UTC.
[null,null,["Last updated 2025-05-19 UTC."],[[["\u003cp\u003eGoogle Identity Services JavaScript library now supports Federated Credential Management (FedCM) to improve automatic sign-in flows, though reconfirmation may be required initially for enhanced privacy.\u003c/p\u003e\n"],["\u003cp\u003e"Sign in with Google" button now supports Family Link and adheres to Google Workspace policies.\u003c/p\u003e\n"],["\u003cp\u003eAMP support has been removed when FedCM is enabled.\u003c/p\u003e\n"],["\u003cp\u003eChrome users may need to reconfirm sign-in with Google Account in each instance for privacy reasons, with exceptions based on third-party cookie settings.\u003c/p\u003e\n"],["\u003cp\u003eDevelopers are encouraged to migrate to FedCM to minimize potential disruptions to automatic sign-in conversion rates.\u003c/p\u003e\n"]]],[],null,["# Sign In With Google Release Notes\n\nThis page contains a list of the new features and significant changes to the\nGoogle Identity Services JavaScript library.\n\n2025-03-17\n----------\n\n- [Sign in with Google button](/identity/gsi/web/guides/personalized-button) supports [Federated Credential Management (FedCM)](https://developers.google.com/privacy-sandbox/cookies/fedcm) and adhere to [Google Workspace](https://workspace.google.com/) policies set by the organization's administrator.\n\n2024-12-01\n----------\n\n- [Sign in with Google button](/identity/gsi/web/guides/personalized-button) supports [Family Link](https://families.google/familylink/) and adhere to [Google Workspace](https://workspace.google.com/) policies set by the organization's administrator.\n\n2023-12-21\n----------\n\n- [Federated Credential Management (FedCM) Beta](https://developers.googleblog.com/2023/08/announcing-federated-credential-management-beta-for-gis.html) for Google Identity\n Services was launched in August 2023. Many developers tested the API and have\n provided valuable feedback.\n\n One response Google heard from developers is about the FedCM automatic sign-in\n flow user gesture requirement. For improved privacy, Chrome requires users to\n reconfirm that they want to sign in to the website with Google Account in each\n Chrome instance even if the user approved the website prior to the FedCM\n rollout. This one-time reconfirmation is achieved through a single click of\n the One Tap prompt to demonstrate user intent to sign-in. This change may\n cause an initial disruption in automatic sign-in conversion rates for some\n websites.\n\n Recently in M121, Chrome made a [change](https://developers.google.com/privacy-sandbox/3pcd/fedcm-updates#chrome_121_december_2023) to the FedCM automatic sign-in\n flow UX. The reconfirmation is only required when third-party cookies are\n restricted. This means:\n 1. Before third-party cookie restrictions are ramped up to 100% (see Privacy\n Sandbox [News and Update](https://privacysandbox.com/news/) page for latest timeline),\n FedCM automatic sign-in does not require reconfirmation for returning users.\n If users reconfirm with FedCM UI, this reconfirmation will count toward the\n user gesture requirement.\n\n 2. FedCM automatic sign-in will check the confirmation status when the\n third-party cookies are manually restricted by users today, or by default in\n future Chrome.\n\n With this change, we recommend all automatic sign-in developers migrate to\n FedCM as soon as possible, to reduce disruption to automatic sign-in\n conversion rates.\n\n For the automatic sign-in flow, GIS JavaScript won't trigger FedCM on an older\n Chrome (before M121), even if your website chooses to opt-in to FedCM.\n\n2023-08-15\n----------\n\n- Added [support](/identity/gsi/web/guides/supported-browsers#third-party_cookies) for the Federated Credential Management API (FedCM).\n- [Accelerated Mobile Pages](/identity/gsi/web/amp/amp) is unsupported. AMP is not available when FedCM is enabled.\n\n2022-04-12\n----------\n\n- [Upgraded One Tap UX on ITP browsers](/identity/gsi/web/guides/features#upgraded_ux_on_itp_browsers) is supported.\n\n2021-4-13\n---------\n\n- [Sign In With Google button](/identity/gsi/web/guides/personalized-button) is supported.\n\n2021-03-17\n----------\n\n- [Accelerated Mobile Pages](/identity/gsi/web/amp/amp) is supported.\n\n2020-3-24\n---------\n\n- [Exponential Cool Down](/identity/gsi/web/guides/features#exponential_cool_down) is supported."]]