oneshot uses the KISS (Keep It Simple Stupid) approach to doing simple things with your images like adding lines, arrows, circles, boxes, and text.

If you’re looking for a full-blown graphics editing tool, run away. However, if you want a small, simple free tool to do some basics, then this might be just what you need.

It is open source, under 7 Mb and uses the KISS (Keep It Simple Stupid) approach to doing simple things with your images like adding lines, arrows, circles, boxes, and text. It’s not going to do much more for you, but there is a niche for a tool like this. I would guess that the author made this utility to fill a particular need they had and made this available to all. The program says it works with BMP and PNG, but I was able also to open JPG as well.