Creative type definitions

Media Owners
Last Updated: February 12, 2026

The following table defines how creative types are classified to help you determine which ones you may want to block from your site.

Creative typeDefinition
ExpandableAny banner ad that changes dimensions when a user interacts with it.
In-Banner VideoA standard in-banner ad in the form of a video.

Flex Video

An Index-rendered video ad unit that serves seamlessly into banner ad slots. By default, Flex Video ad units are muted and auto-play when in view, providing a non-intrusive and eye-catching ad experience. Flex Video is currently in Beta. For more information about Flex Video, contact your Index Representative.