Display alerts for SameSite cookie changes in the developer console

Show alerts in the developer console for “Cookies with SameSite by default” and “Reject insecure SameSite=None cookies” to warn developers of upcoming changes that may require their action.

“Cookies with SameSite by default” and “Reject insecure SameSite=None cookies” will affect many sites using cookies that must be available in a third-party context. In order for developers to prepare for these changes and minimize breakage, we would like to show console messages to make developers aware of these changes and direct them to resources that will help them understand the changes and make the necessary changes to their sites.



No public standards discussion

Status in Chromium


Behind a flag (tracking bug) in:

  • Chrome for desktop release 76
  • Chrome for Android release 76
  • Android WebView release 76

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • In development
  • No public signals
  • No public signals
  • No signals


Last updated on 2019-09-09