If you have a logo or part profile as a JPG, you cannot send it to a CNC router or laser cutter. A DWG file provides the toolpaths necessary for fabrication.
Some desktop versions include built-in image editing (resize, rotate, crop) to prep the JPG before the conversion begins, ensuring a cleaner vector output. jpg to dwg converter
Unlike a standard image converter (which changes a photo from a JPG to a PNG), a uses a process called vectorization . If you have a logo or part profile