If you always shoot in RAW as I do, you might be interested in a wonderful free bit of software that works with your chosen image manipulation software and when you go into a folder, invites you to convert all the images to JPEGs that it then puts in a separate folder.
As most of the time I send JPEGs to other people, once I have finished with the RAW part, this is perfect for me. It comes from www.rawworkflow.com who are the same people who make the famous and very easy to use white balance tool.
Just go to the web site and download the program but don’t then spend ages as I did looking for a link from your desktop. As I said already, you will find it when you go into your chosen image manipulation program.
This is another of those wonderful little tips that I got from my shooting buddy and photography teacher to the world, Scott Kelby.