1)   ProJPEG for Windows 6.0.1 ProJPEG is an Adobe Photoshop file format plugin that has been the ultimate JPEG tool for Web graphics professionals for years. Provides advanced tools, precise controls, and instant feedback so you can create the best, smallest JPEG's for the web. 2)   ProJPEG for Macintosh 6.0 ProJPEG is an Adobe Photoshop file format plugin that has been the ultimate JPEG tool for Web graphics professionals for years. Provides advanced tools, precise controls, and instant feedback so you can create the best, smallest JPEG's for the web.