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+.\" Copyright 2017-2022 Glyph & Cog, LLC
+.TH pdftopng 1 "18 Apr 2022"
+.SH NAME
+pdftopng \- Portable Document Format (PDF) to Portable Network Graphics
+(PNG) converter (version 4.04)
+.SH SYNOPSIS
+.B pdftopng
+[options]
+.I PDF-file PNG-root
+.SH DESCRIPTION
+.B Pdftopng
+converts Portable Document Format (PDF) files to color, grayscale, or
+monochrome image files in Portable Network Graphics (PNG) format.
+.PP
+Pdftopng reads the PDF file,
+.IR PDF-file ,
+and writes one PNG file for each page,
+.IR PNG-root - nnnnnn .png,
+where
+.I nnnnnn
+is the page number.
+If
+.I PNG-root
+is \'-', the image is sent to stdout (this is probably only useful
+when converting a single page).
+.SH CONFIGURATION FILE
+Pdftopng reads a configuration file at startup.  It first tries to
+find the user's private config file, ~/.xpdfrc.  If that doesn't
+exist, it looks for a system-wide config file, typically /etc/xpdfrc
+(but this location can be changed when pdftopng is built).  See the
+.BR xpdfrc (5)
+man page for details.
+.SH OPTIONS
+Many of the following options can be set with configuration file
+commands.  These are listed in square brackets with the description of
+the corresponding command line option.
+.TP
+.BI \-f " number"
+Specifies the first page to convert.
+.TP
+.BI \-l " number"
+Specifies the last page to convert.
+.TP
+.BI \-r " number"
+Specifies the resolution, in DPI.  The default is 150 DPI.
+.TP
+.B \-mono
+Generate a monochrome image (instead of a color image).
+.TP
+.B \-gray
+Generate a grayscale image (instead of a color image).
+.TP
+.B \-alpha
+Generate an alpha channel in the PNG file.  This is only useful with
+PDF files that have been constructed with a transparent background.
+The \-alpha flag cannot be used with \-mono.
+.TP
+.BI \-rot " angle"
+Rotate pages by 0 (the default), 90, 180, or 270 degrees.
+.TP
+.BI \-freetype " yes | no"
+Enable or disable FreeType (a TrueType / Type 1 font rasterizer).
+This defaults to "yes".
+.RB "[config file: " enableFreeType ]
+.TP
+.BI \-aa " yes | no"
+Enable or disable font anti-aliasing.  This defaults to "yes".
+.RB "[config file: " antialias ]
+.TP
+.BI \-aaVector " yes | no"
+Enable or disable vector anti-aliasing.  This defaults to "yes".
+.RB "[config file: " vectorAntialias ]
+.TP
+.BI \-opw " password"
+Specify the owner password for the PDF file.  Providing this will
+bypass all security restrictions.
+.TP
+.BI \-upw " password"
+Specify the user password for the PDF file.
+.TP
+.B \-verbose
+Print a status message (to stdout) before processing each page.
+.RB "[config file: " printStatusInfo ]
+.TP
+.B \-q
+Don't print any messages or errors.
+.RB "[config file: " errQuiet ]
+.TP
+.B \-v
+Print copyright and version information.
+.TP
+.B \-h
+Print usage information.
+.RB ( \-help
+and
+.B \-\-help
+are equivalent.)
+.SH EXIT CODES
+The Xpdf tools use the following exit codes:
+.TP
+0
+No error.
+.TP
+1
+Error opening a PDF file.
+.TP
+2
+Error opening an output file.
+.TP
+3
+Error related to PDF permissions.
+.TP
+99
+Other error.
+.SH AUTHOR
+The pdftopng software and documentation are copyright 1996-2022 Glyph
+& Cog, LLC.
+.SH "SEE ALSO"
+.BR xpdf (1),
+.BR pdftops (1),
+.BR pdftotext (1),
+.BR pdftohtml (1),
+.BR pdfinfo (1),
+.BR pdffonts (1),
+.BR pdfdetach (1),
+.BR pdftoppm (1),
+.BR pdfimages (1),
+.BR xpdfrc (5)
+.br
+.B http://www.xpdfreader.com/