Photo Finish - Bulk import product photos for Shopify
Icons8 Background Remover - Quickly remove the background from any photo
Smartmockups - Create stunning product mockups, easily and online.
remove.bg - Remove the background of any image 100% automatically
Baine - Merchants
ClippingMagic.com - Remove image backgrounds online. Make backgrounds transparent, white, etc. Edit, crop, rotate, fix colors, add shadows, all you need for great photos!