Google ships embeddable Preferred Sources button for publishers

Google released an embeddable "Preferred Sources" button on August 20, 2026, with code published in its Search Central documentation. Publishers place it on their sites so readers can designate a source for highlighting across Search, Discover, Google News, and AI-generated responses in AI Mode and AI Overviews. Google's data shows users were twice as likely to click through to a preferred source when one was available.