WebP is a modern image format created by Google. It was made specially for the Web, providing a high compression ratio without affecting the image quality. On Windows, any image viewer like IrfanView can open WebP images and save them as JPG/PNG. On Linux however, it might be hard to edit or convert a WebP image, because traditional image editing tools like GIMP do not support WebP yet. Here is how to convert a WebP image to the PNG format and vice versa.