OS X / Linux:
Windows:
tex2png-hs is a Haskell port of Xyne's tex2png tool. It is a
wrapper around latex and dvipng and provides several options for
modifying its behaviour, such as cropping the whitespace around the
content, specifying the DPI, or inputting a full document.
To see all options, run tex2png-hs --help if you've already ran
stack install, or run stack exec -- tex2png-hs --help if you're
just experimenting.