Images eat up a lot of storage space on smartphones. In case you are looking for ways to make more space on your phone, then you can compress the images. Follow these methods and steps to know how we can reduce the size of your image files according to your preferences on iOS: Compressing image file size through Image Size app This app is available in the Apple App Store. 1. Firstly, navigate to the Image Size app and tap to open. 2. Go to the upper-left image icon and then hit the “Allow Access” tab in the photo library. 3. Now select any of the photos that you like to compress its size by hitting the “Choose” option. 4. Next, your image will automatically reduce to its limit by the app. You may view the reducing parameters from 1.37 MB to 302.64 KB. 5. At last, touch the “Download” tab to store your reduced image to the Photo library.