Global Privacy Control (GPC)
A browser signal (the Sec-GPC: 1 header and navigator.globalPrivacyControl) telling sites not to sell or share the visitor's data; a legally valid opt-out in about a dozen US states.
- Introduced
- 2020all 2020 milestones
- Specification
- GPC spec
- Browser requirement
- California Opt Me Out Act, from 2027-01-01
Brave and DuckDuckGo send the signal by default, Firefox offers a setting, and extensions add it to Chrome. Honouring it means blocking ad pixels and data sharing while essential site functions keep running.
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Field notes that cover Global Privacy Control (GPC)
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