This Mac OS X droplet converts any compatible image files into JPEGs. You can set the quality of the compression by changing the number in the filename. Make as many copies you need. I always have two on my desktop; one named Jpeg 60 and the other Jpeg 100.
The droplet accepts PhotoShop files and in fact anything with one of the following extensions: tif, tiff, png, pict, pct, pdf, bmp, eps, psd