The functionality to modify a published Instagram post to include additional images is not directly supported by the platform. Once a post, whether a single image or a carousel, is published, the initial set of images cannot be altered to incorporate new visuals. The image selection becomes fixed upon posting.
This limitation encourages careful pre-planning and curation of content before publication. It also maintains the integrity of the platform’s user experience by ensuring posts remain consistent from their initial presentation. Historically, Instagram has prioritized a streamlined and controlled environment, restricting post-publication edits to captions, tags, and location information.