This is a breakdown of the submission process to sell your stock photography to iStock Photo. Like all micro-stock agencies, they won’t put up photos from just any photographer. You must go through their submission process to see if they’ll carry you.

iStock Photo accepts images as small as 1600 x 1200.

1. Go to http://www.istockphoto.com/sell-stock-photos.php
2. You must sign up to be an iStock Member and create an account.
3. You then are taken through a series of pages listing all manner of guidelines. At the end of this they have a simple online quiz that you have to take based on what you just read. Your quiz is instantly graded (pass or fail) online.
4. You then have to upload one piece of photo identification. For this I just snaped a photo of my driver’s license.
5. Finally, you have to upload just 3 sample images. With only three images by which you are judged, make sure they are good and show a good variety!