Buying native inventory

Buyers
Last Updated: February 12, 2026

Native ads are designed with text, images, or videos as provided by the marketer. The ads are optimized by the media owner or Index Exchange (Index) for the location where they are served.

How it works

  1. Publishers selling native ad inventory will request a set of assets from buyers, such as a headline, image, logo, and descriptive ad copy.

  2. Buyers who are interested in buying native inventory will return these assets requested from the Media Owner as part of a valid native bid response.

  3. Index reviews the creative before they are made available on the exchange. For more information about how Index reviews creatives, see Reviewing ad quality.

  4. The Media Owner or Index renders the native ad on the website.

Rendering

Native ads can be rendered by the Media Owner or Index. Publishers have a number of options on how to render native ads through their ad server. Native ads can be rendered into feed, article, top, bottom, or sidebar positions. They can be optimized into dedicated ad units or in multi-format flexible ad units to provide high-quality scale for media buyers. Index renders the native ad based on the ad slot size and native creative assets provided by the media buyer. Rendering of native ads by Index is only supported through Prebid.js integrations and is currently for text and image native assets only. For any questions, contact your Index Representative.

For more information on supported native bid request and response fields, see: