Laravel makes it easy to handle file uploads from a request that's multipart/form-data encoded. You can access uploaded files through a Request instance, and it has helper methods to store files easily.
For example, you can verify that the incoming file is an image or matches a MIME type.
Or maybe you're using a JavaScript library to process an image, like cropping, and you want to send the base64 string to your API.
It's a set of little helpers for your Laravel application, but every feature is opt-in. This package has a trait that you can add to a Form Request to convert base64 input data to files.