Saved a picture from a website and it arrived as a strange .webp file nothing opens? Turn it into a JPG that works everywhere. First time? Add the picture and press Convert. Free, no signup.
What is WebP? A newer image format from Google that websites love because files are small. Many desktop apps, printers, and upload forms still don't accept it — hence the conversion cottage industry.
What happens to transparency? JPG has no transparency, so transparent areas are placed on white.
Why not keep WebP? Keep it for websites. Convert when a person or a program needs a file they can definitely open.