Instagram Help accepts photos 320 to 1080 pixels wide with a ratio between 1.91:1 and 4:5, and recommends uploading at least 1080 wide. The 4:5 portrait (1080x1350) takes the most screen and is the tallest allowed. Since 2025 the profile grid shows 3:4 thumbnails, so the sides of a 4:5 may be cropped on the grid.