In 2025, the perfect Instagram Story size is 1080 pixels by 1920 pixels, with an aspect ratio of 9:16. This sweet spot makes your vertical video and image Stories look sharp on any device. But here's where it gets interesting—while these are the ideal specs, you've got some wiggle room. Instagram gives you plenty of ways to show up — feed images, carousels, reels, and stories — each with unique Instagram post sizes. When your visuals match Instagram ’s recommendations, you give your posts the best chance of standing out and getting that all-important social media engagement. With incorrect Instagram story size ratios, you risk blurry images, cropped captions, and worst of all, lost conversions. This guide breaks down everything you need to know to get it right. In this guide you'll find out the best Instagram story sizes, dimesions, specs and ratios for more views.

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