Instagram post ratio: Instagram post size directly affects

Instagram post size directly affects how your content looks. Choosing the wrong size can crop text, cut faces, or blur details. The most important Instagram post size and dimension to know in 2025 is 1080 x 1350 pixels with a 4:5 portrait aspect ratio, since it takes up the most space in the feed and often performs best for engagement. However, you may want to use landscape or square posts depending on your goals. That’s why I’ve tested formats across feed posts, stories, reels, and ads ... Learn the optimal sizes and ratios for photos, videos, stories, reels, and ads on Instagram in 2025. Find out how to adjust your content to the new grid changes and dimensions. Read on to get an updated guide on how to adjust the image size and Instagram aspect ratio, from image and video, to stories and reels. Find the best Instagram image size, resolution, aspect ratio, and specs for Instagram posts, Reels, cover photos, Stories, highlights, and ads!