The limitation on the number of photos that can be selected for certain Instagram features, specifically within the context of creating a single post, often restricts users to a maximum of ten items. This restriction primarily applies to creating carousels, which are posts containing multiple photos or videos that users can swipe through. This functionality is distinct from creating Stories, where different limitations may apply.
This constraint benefits the user experience by preventing overly lengthy and potentially less engaging posts. From Instagram’s perspective, limiting the number of items per post may contribute to server load management and optimizing content delivery. Initially, Instagram focused primarily on single-image posts. The introduction of multi-image posts (carousels) was a significant feature update, subject to technical and design considerations regarding optimal content consumption.