What is an image cropper used for?

An image cropper is used to remove unwanted outer areas from an image, improve composition, change aspect ratio, or focus attention on a specific subject. Common use cases include: removing distracting backgrounds from photos, creating profile picture square crops, preparing images for social media with specific aspect ratios (1:1 for Instagram, 16:9 for YouTube thumbnails), cutting out product images for e-commerce, and extracting specific elements from screenshots or documents. Unlike resizing, cropping doesn't scale the image but rather cuts out a selected rectangular region.