Convert jpg to sfw Online: jpg2sfw
You can use Tom's Editor to easily convert images from
Joint Photographic Experts Group JFIF .JPG to Seattle File Works image .SFW.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Joint Photographic Experts Group JFIF is an image format with extension JPG.
Seattle File Works image is an image format with extension SFW.