I downloaded a set of stock photos for a client project. Every single file was WebP — the stock site had switched their entire library to save bandwidth. Photoshop refused to open them. Our WebP photo converter batch-processed the entire set to lossless PNG, and I was editing within minutes.
WebP uses lossy compression optimized for web delivery — small files, fast loading. But photo editing software needs the full uncompressed pixel data that PNG provides. Think of WebP as the delivery format and PNG as the working format. Convert to PNG when you need to edit, then optionally convert back to WebP for production. Convert WebP photos to PNG →