I used to have a lot of screenshots. During the time I had several applications to create them. Recently the gnome screenshot panel applet is my favourite since it is simple and reasonably fast. However I was missing a feature: I wanted to add descriptions to my screenshots. So I hacked around a little bit.
In the original version you can only specify the filename:
In the hacked version you can specify a description which is saved as a “tEXt/Description” field into the .png file:
