YouTube Watch-While Ads documented: image ads under the video on the Watch Page for Demand Gen, PMax and App

Google's Demand Gen image asset specifications page now describes Watch-While Ads, a non-disruptive single-image format placed directly under organic videos on the YouTube Watch Page that does not pause playback. It is supported by Demand Gen, Performance Max and App campaigns for installs.

Viewers can close the ad at any time or it disappears after 30 seconds of inactivity. Google advises using safe zones similar to 9:16 video. YouTube Help separately notes Watch While ads serve on monetizing videos ineligible for mid-rolls (2 to 8 minutes, or over 8 minutes with mid-rolls off). Spotted by Hana Kobzová.

Coverage: PPC News Feed (2026-08-20).