A carousel is a post format that lets users swipe or scroll through multiple images, videos, or slides within a single post. Instagram, LinkedIn, and Facebook all support the format, and it has become one of the highest-performing content types for engagement - each swipe counts as additional interaction, which signals interest to the algorithm.
For brands and educators, carousels work well for step-by-step tutorials, before-and-after comparisons, listicles, and data storytelling. A strong first slide acts as a hook to encourage swiping; a final slide typically includes a call to action or prompt to save the post.