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| Ghostscript | |
|---|---|
 | |
| Original author(s) | L. Peter Deutsch |
| Developer(s) | Artifex Software[1] |
| Initial release | August 11, 1988[2] |
| Stable release | 10.05.1[3]
/ 29 April 2025 |
| Repository | |
| Written in | C |
| Operating system | Cross-platform |
| Type | PostScript and PDF interpreter |
| License | Dual-licensed (GNU Affero General Public License + commercial permissive exception) |
| Website | www |
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 of documents in these language,[4] the display or printing of document pages, and conversion between PostScript and PDF files.[5]
Features
[edit]Ghostscript can be used as a raster image processor (RIP) for raster computer printers—for instance, as an input filter of line printer daemon—or as the RIP engine behind PostScript and PDF viewers. It can also be used as a file format converter, such as PostScript to PDF converter. The ps2pdf conversion program comes with the Ghostscript distribution.[6]
Ghostscript can also serve as the back-end for PDF to raster image (png, tiff, jpeg, etc.) converter; this is often combined with a PostScript printer driver in "virtual printer" PDF creators.[7][citation needed] As it takes the form of a language interpreter, Ghostscript can also be used as a general purpose programming environment.
Ghostscript has been ported to many operating systems, including Unix-like systems, classic Mac OS, OpenVMS, Microsoft Windows, Plan 9, MS-DOS, FreeDOS, OS/2, ArcaOS, Atari TOS, RISC OS and AmigaOS.
History
[edit]Ghostscript was originally written by L. Peter Deutsch for the GNU Project, and released under the GNU General Public License in 1988.[8] At the time of the initial release there was a similar commercial software product named GoScript from LaserGo.[9] Later, Deutsch formed Aladdin Enterprises to dual-license Ghostscript also under a proprietary license with an own development fork: Aladdin Ghostscript under the Aladdin Free Public License[10] (which, despite the name, is not a free software license, as it forbids commercial distribution) and GNU Ghostscript distributed with the GNU General Public License.[11] With version 8.54 in 2006, both development branches were merged again, and dual-licensed releases were still provided.[12][13]
Ghostscript is currently owned by Artifex Software and maintained by Artifex Software employees and the worldwide user community. According to Artifex, as of version 9.03, the commercial version of Ghostscript can no longer be freely distributed for commercial purposes without purchasing a license, though the (A)GPL variant allows commercial distribution provided all code using it is released under the (A)GPL.[14][15][16][17]
In February 2013, with version 9.07, Ghostscript changed its license from GPLv3 to GNU AGPL.[18][19] which raised license compatibility questions,[clarification needed] for example by Debian.[20]
Starting with release 9.55.0 Ghostscript has two built-in PDF interpreters. Until spring 2022, up to Ghostscript version 9.56.1, the default PDF interpreters implementation itself was coded in PostScript. The new default PDF interpreter has been rewritten in C entirely, and is faster and more secure than its predecessor, while its interface and graphics library have not changed.[21] Scripting the new C written PDF interpreter from PostScript is still possible.[22]
Free fonts
[edit]There are several sets of free fonts supplied for Ghostscript, intended to be metrically compatible with common fonts attached with the PostScript standard.[23][24][25][26] These include:
- A collection of 35 font styles from ten typeface families contributed by German foundry URW++ in 1996 under the GNU General Public License (GPL) and Aladdin Free Public License (AFPL), which is commonly called the "URW Base 35 fonts" or "URW Core 35 fonts".[27][28][29][30][31][excessive citations] The collection is similar to the 35 fonts defined by Adobe in PostScript Level 2: Bookman L (Bookman), Century Schoolbook L (New Century Schoolbook), Chancery L (Zapf Chancery), Dingbats (Zapf Dingbats), Gothic L (Avant Garde), Nimbus Mono L (Courier), Nimbus Roman No9 L (Times), Nimbus Sans L (Helvetica), Palladio L (Palatino), Standard Symbols L (Symbol), in Type1, TrueType, and OpenType formats.
- The GhostPDL package (including Ghostscript as well as companion implementations of HP PCL and Microsoft XPS) includes additional fonts under the AFPL which bars commercial use.[26][32] It includes URW++ versions of Garamond (Garamond No. 8), Optima (URW Classico), Arial (A030), Antique Olive, and Univers (U001), Clarendon, Coronet, Letter Gothic, as well as URW Mauritius and a modified form of Albertus known as A028. Combined with the base set, they represent a little more than half of the standard PostScript 3 font complement.
- A miscellaneous set including Cyrillic, kana, and fonts derived from the free Hershey fonts, with improvements by Thomas Wolff (such as adding accented characters).
The Ghostscript fonts were developed in the PostScript Type 1 format but have been converted into the TrueType format.[27][26] As a result, a user can install and use the Ghostscript fonts via most modern software. Furthermore, the Ghostscript fonts are used as parts of various open source applications, e.g., the Linux version of GIMP depends on Graphviz which in turn depends on the Ghostscript fonts.[33][34] Finally, multiple open source font projects used glyphs from the Ghostscript fonts, e.g., the Latin characters of GNU FreeFont are based on Nimbus Mono L, Nimbus Roman No9 L, and Nimbus Sans L.[35] The TeX Gyre fonts are also based on 8 out of the 10 original Ghostscript typeface families.[36] The Garamond font has additionally been improved upon.[37]
See also
[edit]
References
[edit]- ^ "Documentation". ghostscript.com. July 10, 2002. Archived from the original on February 28, 2018. Retrieved May 23, 2017.
- ^ "History of Ghostscript versions 1.n". Archived from the original on 2025-08-07. Retrieved 2025-08-07.
- ^ "Version 10.05.1 (2025-08-07)". 29 April 2025. Retrieved 30 April 2025.
- ^ "Ghostscript and the PostScript language". ghostscript.com. Archived from the original on 2025-08-07. Retrieved 2025-08-07.
- ^ Ingo, Henrik (1 August 2006). Open Life: The Philosophy of Open Source. Lulu.com. ISBN 9781847286116 – via Google Books.
- ^ "ps2pdf: PostScript-to-PDF converter". Archived from the original on 2025-08-07. Retrieved 2025-08-07.
- ^ "Creating a Free PDF Writer Using Ghostscript". www.stat.tamu.edu. Archived from the original on 2025-08-07. Retrieved 2025-08-07.
- ^ "Recent changes in Ghostscript". pages.cs.wisc.edu. 2025-08-07. Archived from the original on 2025-08-07. Retrieved 2025-08-07.
- ^ Kraul, Chris (2025-08-07). "Printing Up a Package for Success: LaserGo Software Offers Cheaper Desktop System". Los Angeles Times. Retrieved 2025-08-07.
- ^ "Aladdin Free Public License". Archived from the original on 2025-08-07. Retrieved 2025-08-07. (mirror)
- ^ "Background information for new users of Ghostscript". pages.cs.wisc.edu.
- ^ "Advogato: Blog for raph". 29 June 2017. Archived from the original on 29 June 2017.
- ^ raph (2025-08-07). "Ghostscript leading edge is now GPL!". Archived from the original on 2025-08-07. Retrieved 2025-08-07."I have some great news to report. The leading edge of Ghostscript development is now under GPL license, as is the latest release, Ghostscript 8.54."
- ^ "Artifex Software Inc". Artifex Software Inc. Archived from the original on 2025-08-07. Retrieved 2025-08-07.
- ^ Robitaille, Jason (2025-08-07). "Copyright Infringement Lawsuit Filed Against Palm". webOS Nation. Retrieved 2025-08-07.
- ^ "Complaint for Copyright Infringement" (PDF). 2025-08-07. p. 4: 15., p. 6: 27. Retrieved May 3, 2013.
- ^ "Notice of Voluntary Dismissal With Prejudice" (PDF). 2025-08-07. Retrieved 2025-08-07.
- ^ Liddell, Chris (2025-08-07). "[gs-devel] Ghostscript 9.07 and GhostPDL 9.07". Archived from the original on 2025-08-07. Retrieved 2025-08-07.
- ^ "Licensing Information". Artifex Software Inc. Archived from the original on 2025-08-07. Retrieved 2025-08-07.
- ^ Jose Luis Rivas (2025-08-07). "Re: Ghostscript licensing changed to AGPL". lists.debian.org. Retrieved 2025-08-07.
- ^ "Ghostscript : PDFI - The NEW Ghostscript PDF Interpreter is now the default!". www.ghostscript.com. Retrieved 2025-08-07.
- ^ "Ghostscript and the PostScript Language - Scripting the PDF interpreter". ghostscript.com. Retrieved 2025-08-07.
- ^ "Debian package - gsfonts". Retrieved 2025-08-07.
- ^ "Fonts and font facilities supplied with Ghostscript". Archived from the original on 2025-08-07. Retrieved 2025-08-07.
- ^ "Linux fonts (mostly X11)". 2025-08-07. Retrieved 2025-08-07.
- ^ a b c "doc/pcl/urwfonts (URW fonts in TTF format)". ghostscript doc. Archived from the original on 25 March 2018. Retrieved 24 March 2018.
- ^ a b ArtifexSoftware. "urw-base35-fonts". GitHub. Retrieved 25 March 2018.
- ^ Finally! Good-quality free (GPL) basic-35 PostScript Type 1 fonts., archived from the original on 2025-08-07, retrieved 2025-08-07
- ^ Finally! Good-quality free (GPL) basic-35 PostScript Type 1 fonts. (TXT), retrieved 2025-08-07
- ^ "Fonts and TeX". 2025-08-07. Retrieved 2025-08-07.
- ^ Five years after: Report on international TEX font projects (PDF), 2007, retrieved 2025-08-07
- ^ "GhostPDL License". ghostscript doc. Archived from the original on 25 March 2018. Retrieved 21 November 2017.
- ^ "Arch Linux - gimp". Retrieved 2025-08-07.
- ^ "Arch Linux - graphviz". Retrieved 2025-08-07.
- ^ "Gnu FreeFont: Design notes". Retrieved 2025-08-07.
- ^ "The TeX Gyre (TG) Collection of Fonts — GUST Web Presence". Retrieved 2025-08-07.
- ^ Bisson, Gaetan. "URW Garamond ttf conversions". Retrieved 18 August 2015.
External links
[edit]- Official website
- Ghostscript version 8.56 and earlier
- Ghostscript/GhostPDL binaries download page at GitHub (cross-platform, this site is actively maintained)
- GPL Ghostscript binaries download page at SourceForge (cross-platform, this site is no longer actively maintained)
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