Ghostscript is a suite of software based on an interpreter for Adobe Systems' PostScript and Portable Document Format (PDF) page description languages. Its main purposes are the rasterization or rendering of such page description language files, for the display or printing of document pages, and the conversion between PostScript and PDF files.
Ghostscript Lite is a lightweight distribution of Ghostscript, that is an excellent open source program that is able to convert PostScript to PDF files. It is distributed under the GNU General Public License.
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