mathjax-node-svg2png 
This module extends mathjax-node using svg2png.
It can be used as a drop-in replacement for mathjax-node.
Use
npm install mathjax-node-svg2png
to install mathjax-node-svg2png and its dependencies.
Use
This module is used like mathjax-node, extending the input data object with new options
png: true // enable PNG generation
scale: 1 // scaling factor to apply during conversion
Similarly, mathjax-node's result object is extended with new keys png (containing the resulting data-uri string) and pngWidth (PNG width in pixel).
png: // PNG results
pngWidth: // width (in pixel)