# Changes in the most recent release of Ghostscript

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.

## Version 9.02 (2011-03-30)

This is the third release in the stable 9.x series.

This a an "out of order" release, primarily to ensure the GPL Ghostscript release remains in version "lock-step" with the Artifex commercial release.

Highlights in this release include:

For monochrome devices, there is a new halftone technique for sampled image data. The existing technique is very efficient (and is is still used) for large areas of color, such as an area fill, but encountered performance problems dealing with sampled image data where a given colour value only covered a few pixels at a time. The new approach applies the halftone threshold array directly to the image samples.

Further performance, memory use, and stability improvements with the new features introduced in 9.00, as well as Unix/Linux build fixes, plus the usual assorted bug fixes.

For a list of open issues, or to report problems, please visit bugs.ghostscript.com.

### Incompatible changes

No recorded incompatible changes.

### Changelog

See the history file for complete log of changes.

Copyright © 2005-2011 Artifex Software, Inc. All rights reserved.

This software is provided AS-IS with no warranty, either express or implied. This software is distributed under license and may not be copied, modified or distributed except as expressly authorized under the terms of that license. Refer to licensing information at http://www.artifex.com/ or contact Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134, San Rafael, CA 94903, U.S.A., +1(415)492-9861, for further information.

Ghostscript version 9.02, 30 March 2011