The script extracts the preamble of the document and runs all

\begin{postscript}...\end{postscript}
\begin{pspicture}...\end{pspicture} and
\pspicture...\endpspicture

separately through LaTeX with the same preamble as the original document; thus it creates EPS, PNG and PDF files of these snippets. In a final PDFLaTeX run the script replaces the environments with \includegraphics to include the processed snippets.

Detail documentation is acquired from the document itself via Perldoc.

The author is Herbert Voß. The package is Copyright © 2008 Herbert Voß.