You can also pinch your fingers together to shrink your image so it fits in the post. Click on it and it will automatically resize your images to fit the frame. When adding a new post you will see a light grey icon with a white frame inside on the bottom left of your post screen. It’s very easy to resize your images using Instagram’s crop feature. When Instagram first started out it only had the option to upload square images with a ratio of 1:1 however an update back in 2015 changed this as Instagram started to allow uploading portraits and landscape images as well.
