VIMAS JPEG plug-in for Adobe Photoshop - Version 1.0 VIMAS JPEG Plug-in for Adobe Photoshop 4.0 allows Photoshop users to compress images as JPEGs at compression levels superior to those generated by standard JPEG compression generators. Users may preview the compression results, as well as the actual image before saving the file. Thumbnails are generated automatically for easier management of your image library.