Another excellent (free) still image graphics program is Paint.net . (www.getpaint.net – NOT paint.net).
This far exceeds the functionality in Paint in Microsoft Windows, but is still a free program created by an educational group.
Unlike Pixlr – you have to install this on your local machine and as it is called Paint.NET – it is written in Microsoft oriented Visual Studio. So, it may not work for you pirates that live in Apple/Mac or Linux land.