djvutxt - Extract the hidden text from DjVu documents.
djvutxt [options] inputdjvufile [outputtxtfile]
Program djvutxt decodes the hidden text layer of a DjVu document
inputdjvufile and prints it into file outputtxtfile or on the standard
output. The hidden text layer is usually generated with the help of an
optical character recognition software.
Without options -detail and -escape, this program simply outputs the
UTF-8 text. Option -detail cause the output of S-expressions
describing the text and its location. Option -escape uses C-style
escape sequences to represent nonprintable non-ASCII characters.
Specify which pages should be processed. When this option is
not specified, the text of all pages of the documents is
concatenated into the output file. The page specification
pagespec contains one or more comma-separated page ranges. A
page range is either a page number, or two page numbers
separated by a dash. For instance, specification 1-10 outputs
pages 1 to 10, and specification 1,3,99999-4 outputs pages 1 and
3, followed by all the document pages in reverse order up to
This options causes djvutxt to output S-expressions specifying
the position of the text in the page. See the manual page
djvused(1) for a description of the output format. Argument
keyword specifies the maximum level of detail for which text
location is reported. The recognized values are: page, column,
region, para, line, word, and char. All other values are
interpreted as char.
Output escape sequences of the form "ooo" for all non ASCII or
non printable UTF-8 characters and for the backslash character.
Use program djvused(1) for more control over the text layer.
This program was initially written by Andrei Erofeev
<firstname.lastname@example.org> and was then improved Bill Riemers
<email@example.com> and many others. It was then rewritten to use
the ddjvuapi by Leon Bottou <firstname.lastname@example.org>.