This document is news about the most recent Ghostscript release. For earlier versions, see the history documents:
History of Ghostscript versions 9.n
History of Ghostscript versions 8.n
History of Ghostscript versions 7.n
History of Ghostscript versions 6.n
History of Ghostscript versions 5.n
History of Ghostscript versions 4.n
History of Ghostscript versions 3.n
History of Ghostscript versions 2.n
History of Ghostscript versions 1.n
For other information, see the Ghostscript overview.
This is the thirteenth full release in the stable 9.x series, and is mainly a maintenance release.
Highlights in this release include:
New custom PJL (near) equivalents for pdfmark and setdistillerparams. These were primarily added to allow pdfwrite to be configured correctly for PDF/A output from GhostPCL. See: pdfwrite with PCL input for more details.
Ghostscript users should continue to use the existing pdfmark and setdistillerparams capabilities.
Metadata pdfmark is now implemented. This allows the user to specify an XMP stream which will be written to the Catalog of the PDF file. A new pdfmark 'Ext_Metadata' has been defined. This takes a string parameter which contains XML to be added to the XMP normally created by pdfwrite.
See pdfwrite pdfmark extensions for more information.
The halftone threshold array generation tools (part of
toolbin/halftone) have been
thresh_remap which allows folding the transfer function (AKA toner
response curve (TRC)) into the threshold array so that highlights are improved. Further,
gen_stochastic has improved support for minimum dot size and shape.
Plus the usual round of bug fixes, compatibility changes, and incremental improvements.
For a list of open issues, or to report problems, please visit bugs.ghostscript.com.
(Minor) API change: copy_alpha now supports 8 bit depth (as well as the previous 2 and 4).
The gs man pages are woefully out of date and basically unmaintained. With the release following 9.19, we intend to replace their contents with a very limited summary of (unlikely to ever change aspects of) calling Ghostscript, and a pointer to the (maintained) HTML documentation. That is, unless a volunteer is willing to update, and commit to maintaining the man pages.
See the history file for complete log of changes.
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Ghostscript version 9.19, 23 March 2016