When removing a white background is useful
The most common white-background problem happens with JPG exports. The subject is usable, but the file carries a white rectangle around it. That rectangle can make logos look unprofessional, product images feel pasted on, and signatures look like they were dropped into a document without cleanup. Removing the white background gives you an asset that can adapt to more layouts.
This workflow is useful for ecommerce photos, brand marks, scanned signatures, profile graphics, certificates, worksheet images, and simple product cutouts. It is also helpful when you only have a screenshot or old export and cannot access the original design file.