About PNG to WebP
PNG to WebP was shaped around one concrete need: PNG image files. The input is an image file in the source format, the central operation is to converts one representation into another with a clearly labelled result, and the intended outcome is a converted image file ready to download. That sequence makes it useful for sharing images with a service that needs a particular format.
PNG characteristics are considered in the conversion or processing result. WebP support is part of the file-format workflow. Taken together, these details make PNG to WebP suitable for sharing images with a service that needs a particular format.