Also, you dont always get the results you want without experimenting with the options first. However it does have features not found in many other versions, like vertical smushing and weird line fitting. Do a web search for one of these, as they are everywhere.
Versions are available for a wide variety of operating systems and computer types.
These conversions can be viewed as graphics using ASC2PIC, a program that will basically 'draw' ascii art using grey pixels on the screen. It is most useful when you need a left facing ascii art to face right, or something like that. The size is a percentage of the original. ASC2PIC2 extends this capability by allowing viewing of both White on Black and Black on White pics to be viewed. It resamples the picture as if it were a .GIF or something, and then converts it back to ascii art using a similar method to GIFscii.