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1. Consuming PDF > 3. Read PDFs with Ghostscript’s GSview

Read PDFs with Ghostscript’s GSview

The Ghostscript toolkit for working with PostScript and PDF supports a number of simple viewers, including GSview.

The Ghostscript set of tools (http://www.cs.wisc.edu/~ghost/) is an alternative to a number of Adobe products. At its heart is a PostScript processor, which also works on PDF files.

Tip

PostScript is both an ancestor of PDF and a complement to it. PostScript is a programming language focused on describing how pages should be printed, while PDF is more descriptive. You can convert from PostScript to PDF and back. Many printers and typesetting systems handle PostScript, while PDF is more commonly used as a format for exchange between computers.

Although typically you run Ghostscript from the command line or you integrate it with other processes, you can also use it as the rendering engine inside a number of viewers. Ghostview and GV support Unix and VMS, while MacGSview is a viewer for the Macintosh and GSview supports Windows, OS/2, and Linux. You’ll need to install Ghostscript [Hack #39] before you install GSview. Once GSview is installed, it can open PostScript, Encapsulated PostScript (EPS), and, of course, PDF, as shown in Figure 1-4.


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