djvu.rst
author Oleksandr Gavenko <gavenkoa@gmail.com>
Sun, 28 Sep 2014 23:24:01 +0300
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.. -*- coding: utf-8; -*-
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.. include:: HEADER.rst
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===================
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 DJVU file format.
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===================
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.. contents::
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About djvu.
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===========
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  http://djvu.org/links/
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                many useful links
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DJVU viewers.
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=============
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 * DjVuLibre (all OS).
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 * WinDjvu (Windows).
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DJVU Editors.
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=============
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 * DjVuLibre (all OS).
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 * DjVu Solo (Windows).
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DjVuLibre.
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----------
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 * A full set of utilities to manipulate and assemble DjVu images and documents.
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 * A set of decoders to convert DjVu to a number of other formats.
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 * A standalone DjVu viewer for Unix under X11 (based on the Qt library).
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 * A browser plugin that works with most Unix browsers
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  http://djvu.sourceforge.net/
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DjVu Solo.
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----------
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Tool for editing and merge files and documents in DjVu format from LizardTech.
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Currently not maintained.
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  http://www.djvu.org/resources/
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djvu to pdf.
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============
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djvulibre::
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  $ ddjvu -format=tiff book.djvu book.tiff
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  $ tiff2pdf -o book.pdf book.tiff
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or directly::
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  $ ddjvu -format=pdf book.djvu book.pdf
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pdf to djvu.
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============
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djvulibre.
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For 'pdftoppm' install xpdf (both Linux and Cygwin)::
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  $ pdftoppm -mono -r 600 -aa yes  $PREFIX.pdf  $PREFIX
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  $ for pbm in $PREFIX*.pbm; do  cjb2 -dpi $DPI $pbm $pbm.djvu;  rm -f $pbm;  done
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  $ djvm -c $OUTFILE  $PREFIX*.pbm.djvu
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pdf2djvu.
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---------
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::
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  $ pdf2djvu file.pdf
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  http://code.google.com/p/pdf2djvu/
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                home page
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JPEG to Djvu.
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=============
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JPEG to high quolity DjVu (DjVuPhoto encode)::
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  $ c44 -dpi $DPI  $FROM.jpg  $TO.djvu
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JPEG to low colour DjVu::
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  $ cpaldjvu -dpi $DPI -colors $NCOLORS $i $i.djvu
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  $ djvm -c $OUTFILE *.djvu    # Many .djvu to single .djvu.
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JPEG to bitonal DjVu::
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  $ convert  $PAGE.jpeg  $PAGE.pbm
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  $ cjb2 -dpi $DPI  $PAGE.pbm  $PAGE.djvu
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  $ djvm -c $OUTFILE *.djvu    # Many .djvu to single .djvu.
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if you don't like default delev of balck adjust options::
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  $ convert -solarize 50% -level 0,50%  $PAGE.jpeg  $PAGE.pbm
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or::
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  $ convert  $PAGE.jpeg  pgm:- | pgmtopbm -value 0.499 > page.pbm
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