PNG is the file design tools, printers and CMS uploads still expect when the picture has sharp edges or a hole in the background. Drop WebP files here; the canvas export keeps transparency.
Resize
Max width 1920 / 1280 / 800 / 640 scales down. Original keeps the pixel size (with a safety cap at 8192px on a side so the tab does not run out of memory).
Photos vs graphics
A WebP photo will become a large PNG. That is lossless behaviour, not a bug. If you wanted a small photo, use WebP to JPG instead.
Animated WebP exports the first frame as a still PNG. For a moving image, convert to GIF on webptools.com.