| 1 | .\" Copyright 2017 Glyph & Cog, LLC
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| 2 | .TH pdftopng 1 "10 Aug 2017"
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| 3 | .SH NAME
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| 4 | pdftopng \- Portable Document Format (PDF) to Portable Network Graphics
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| 5 | (PNG) converter (version 4.00)
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| 6 | .SH SYNOPSIS
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| 7 | .B pdftopng
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| 8 | [options]
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| 9 | .I PDF-file PNG-root
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| 10 | .SH DESCRIPTION
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| 11 | .B Pdftopng
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| 12 | converts Portable Document Format (PDF) files to color, grayscale, or
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| 13 | monochrome image files in Portable Network Graphics (PNG) format.
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| 14 | .PP
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| 15 | Pdftopng reads the PDF file,
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| 16 | .IR PDF-file ,
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| 17 | and writes one PNG file for each page,
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| 18 | .IR PNG-root - nnnnnn .png,
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| 19 | where
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| 20 | .I nnnnnn
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| 21 | is the page number.
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| 22 | If
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| 23 | .I PNG-root
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| 24 | is \'-', the image is sent to stdout (this is probably only useful
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| 25 | when converting a single page).
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| 26 | .SH CONFIGURATION FILE
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| 27 | Pdftopng reads a configuration file at startup. It first tries to
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| 28 | find the user's private config file, ~/.xpdfrc. If that doesn't
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| 29 | exist, it looks for a system-wide config file, typically
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| 30 | /usr/local/etc/xpdfrc (but this location can be changed when pdftopng
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| 31 | is built). See the
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| 32 | .BR xpdfrc (5)
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| 33 | man page for details.
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| 34 | .SH OPTIONS
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| 35 | Many of the following options can be set with configuration file
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| 36 | commands. These are listed in square brackets with the description of
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| 37 | the corresponding command line option.
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| 38 | .TP
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| 39 | .BI \-f " number"
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| 40 | Specifies the first page to convert.
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| 41 | .TP
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| 42 | .BI \-l " number"
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| 43 | Specifies the last page to convert.
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| 44 | .TP
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| 45 | .BI \-r " number"
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| 46 | Specifies the resolution, in DPI. The default is 150 DPI.
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| 47 | .TP
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| 48 | .B \-mono
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| 49 | Generate a monochrome image (instead of a color image).
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| 50 | .TP
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| 51 | .B \-gray
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| 52 | Generate a grayscale image (instead of a color image).
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| 53 | .TP
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| 54 | .B \-alpha
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| 55 | Generate an alpha channel in the PNG file. This is only useful with
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| 56 | PDF files that have been constructed with a transparent background.
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| 57 | The \-alpha flag cannot be used with \-mono.
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| 58 | .TP
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| 59 | .BI \-freetype " yes | no"
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| 60 | Enable or disable FreeType (a TrueType / Type 1 font rasterizer).
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| 61 | This defaults to "yes".
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| 62 | .RB "[config file: " enableFreeType ]
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| 63 | .TP
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| 64 | .BI \-aa " yes | no"
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| 65 | Enable or disable font anti-aliasing. This defaults to "yes".
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| 66 | .RB "[config file: " antialias ]
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| 67 | .TP
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| 68 | .BI \-aaVector " yes | no"
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| 69 | Enable or disable vector anti-aliasing. This defaults to "yes".
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| 70 | .RB "[config file: " vectorAntialias ]
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| 71 | .TP
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| 72 | .BI \-opw " password"
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| 73 | Specify the owner password for the PDF file. Providing this will
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| 74 | bypass all security restrictions.
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| 75 | .TP
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| 76 | .BI \-upw " password"
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| 77 | Specify the user password for the PDF file.
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| 78 | .TP
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| 79 | .B \-q
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| 80 | Don't print any messages or errors.
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| 81 | .RB "[config file: " errQuiet ]
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| 82 | .TP
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| 83 | .B \-v
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| 84 | Print copyright and version information.
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| 85 | .TP
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| 86 | .B \-h
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| 87 | Print usage information.
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| 88 | .RB ( \-help
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| 89 | and
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| 90 | .B \-\-help
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| 91 | are equivalent.)
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| 92 | .SH EXIT CODES
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| 93 | The Xpdf tools use the following exit codes:
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| 94 | .TP
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| 95 | 0
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| 96 | No error.
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| 97 | .TP
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| 98 | 1
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| 99 | Error opening a PDF file.
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| 100 | .TP
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| 101 | 2
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| 102 | Error opening an output file.
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| 103 | .TP
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| 104 | 3
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| 105 | Error related to PDF permissions.
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| 106 | .TP
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| 107 | 99
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| 108 | Other error.
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| 109 | .SH AUTHOR
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| 110 | The pdftopng software and documentation are copyright 1996-2017 Glyph
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| 111 | & Cog, LLC.
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| 112 | .SH "SEE ALSO"
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| 113 | .BR xpdf (1),
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| 114 | .BR pdftops (1),
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| 115 | .BR pdftotext (1),
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| 116 | .BR pdftohtml (1),
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| 117 | .BR pdfinfo (1),
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| 118 | .BR pdffonts (1),
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| 119 | .BR pdfdetach (1),
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| 120 | .BR pdftoppm (1),
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| 121 | .BR pdfimages (1),
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| 122 | .BR xpdfrc (5)
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| 123 | .br
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| 124 | .B http://www.xpdfreader.com/
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