Learn step by step how to repost stories on Instagram, even if you weren’t tagged, and discover tips to boost your profile’s engagement.

Discover the new Instagram post size in 2025 and understand all the changes from the previous year. This complete guide shows the updated formats for feed, stories, reels, IGTV, and ads, plus a table with aspect ratios and pixels to get it right every time. Learn the ideal image size for each post, how to maintain visual consistency, and why using the right format directly impacts your engagement and reach.