If you’re looking for a dead simple online image editor to perform only the most basic image editing tasks, Google Appengine based Picjuice is the answer.

Picjuice allows you to Crop, Resize, Flip, Rotate and Adjust, operations which the Google Appengine Image API supports.

It’s no Photoshop, but if you’re looking for a basic image editor that works, Picjuice might be a good choice.