pMML2SVG is an XSLT stylesheet and has to be used with an XSLT processor to execute the transformation. pMML2SVG takes advantage of some features newly introduced in XSLT 2 such as temporary trees, functions, tunnel parameters, and strong typing. One XSLT processor that implements the full XSLT 2 recommendation is Saxon 9.

However, all ancillary stylesheets that come with pMML2SVG are written in XSLT 1 and can be processed by any of the widespread XSLT 1 processors (xsltproc, Saxon 6, Xalan, …).