What is Outpainting?

Outpainting is the AI image-editing operation that extends an image beyond its original canvas — generating new pixels above, below, or to the sides of the existing image, conditioned on what is already there plus a prompt. It is the inverse of inpainting: instead of regenerating a region inside the image, it generates new regions outside it. Practical uses include re-aspect-ratioing a 1:1 product photo into a 9:16 vertical for Reels and Stories, extending a horizontal hero into a square for Instagram, or generating wider establishing context around a portrait-tight shot. Modern outpainting (Flux, GPT Image, Adobe Generative Expand, Photoshop Generative Fill in expand-canvas mode) produces seamless extensions that respect lighting, perspective, and content continuity — making it possible to repurpose a single product shoot across every aspect ratio modern social platforms require, without re-shooting.