Outpainting extends an image beyond its original borders: the model generates new content around the existing picture so the scene continues naturally. OpenAI popularised the term when it added outpainting to DALL·E in 2022.
When it helps with room photos
- Turning a vertical phone photo into a wider, horizontal view for a listing or presentation.
- Adding breathing room around a tightly cropped shot.
- Changing the aspect ratio for social media without cropping the subject.
The catch
Everything outside the original frame is invented. The model will happily add a window, a door or a wall that does not exist in the real room. For anything that should represent a real space, such as a property listing, use outpainting only for neutral areas (floor, ceiling, sky) or avoid it, and never present invented architecture as real.
Related: inpainting, which edits inside the frame.