Libsvgconv is a simple C library (with LuaJIT wrapper) for converting SVG files into PNG files with some resizing allowed. This library is experimental (I'm not very confident in my C skills), so use at your own risk. If you get some use out this library and find that it needs work, let me know as I would be willing to invest time if people get something out of it. Thanks and enjoy!
LuaJIT
local svgconv = require("svgconv")
-- convert simply takes an input file, output file and a table with the scaling factors (x, y floats)
svgconv.convert(input_svg_file, output_png_file, {x: 1.0, y: 1.0})C
// no header file implemented yet, I would recommend just cloning the methods into your own code