There are millions of different file formats and even a single format, such as .pdf, is many different file formats under-the-hood. It is almost impossible to process all of them correctly .
In your processes you are usually not interested in the exact file type, but in what the image represents: an image, video, or document. Preferably your systems only have to handle a single file type.
FireFabric can handle file uploads for you. With FireFabric’s File Transformer files are transformed to the format that is easiest for your application to handle.