Google is testing black sitelinks with a larger font size and a divider in Search ads on desktop.
This follows earlier sitelink updates, including the same sitelink style on mobile spotted in January 2026, and a test of underlined blue sitelinks on desktop spotted in July 2025.

Among the visible updates, the larger font size is designed to better attract user attention and improve ad engagement.
This update was discovered by Arpan Banerjee.