Image Optimization
How to Remove Background from Product Photos: Transparent PNG in 10 Seconds
Marketplace main images usually demand a white or transparent background, so background removal is the most common image pre-processing step you'll do. Processing locally keeps the original photo on your device - better privacy.
After removing the background you'll often want to compress or convert to a uniform size; watermarking and batch renaming can also be done locally in one pass.
Note: background removal is weaker on complex edges like hair and glass. Touch those up manually before listing when it matters.