In Safari 27, a new WebKit feature flag enables Global Privacy Control, a new 'stop selling or sharing my data switch.' Under the California Consumer Privacy Act, it must be honored by covered businesses as a valid consumer request to stop the sale or sharing of personal information. Even if you're not in California, most websites will accept the signal and honor your preference. Read more about GPC on the [State of California Department of Justice's website](https://oag.ca.gov/privacy/ccpa/gpc). 

If you don't have Safari feature flags enabled, go to Safari Settings > Advanced > Show features for web developers. Then go to the Feature Flags tab and enable the two Global Privacy Control flags.

You can test your selection is working by visiting GPC's main website, [globalprivacycontrol.org](https://globalprivacycontrol.org). You'll see a "GPC signal detected" banner at the top of the page.

If you're not on macOS 27, you can still download Safari 27 for macOS Tahoe at [developer.apple.com/safari/resources/](https://developer.apple.com/safari/resources/). 

You can also download Safari Technology Preview from the same site, which also includes the control. There's a single Global Privacy Control flag in Safari Technology Preview. 

Safari 27 adds support for Global Privacy Control