This program makes PNG graphics from DVI files as obtained from TeX and its relatives. It is intended to produce anti-aliased screen-resolution images as fast as is possible. The target audience is people who need to generate and regenerate many images again and again. The primary target is the preview-latex (X)Emacs package, a package to preview formulas from within (X)Emacs. Yes, you get to see your formulas in the (X)Emacs buffer, see `http://preview-latex.sf.net'. Another example is WeBWorK, an internet-based method for delivering homework problems to students over the internet, giving students instant feedback as to whether or not their answers are correct, see `http://webwork.math.rochester.edu'. Other applications may also benefit, like web applications as latex2html and WYSIWYG editors like LyX.