pdftotext コマンドでできる。

macOS Sierra 10.12.4 環境では、
brew install poppler で、
　pdfdetach
　pdffonts
　pdfimages
　pdfinfo
　pdfseparate
　pdftocairo
　pdftohtml
　pdftoppm
　pdftops
　pdftotext
　pdfunite
が、インストールされた。

Poppler is a PDF rendering library based on the xpdf-3.0 code base.
https://poppler.freedesktop.org/

$ man pdftotext
pdftotext(1)                                                                                                                                                                                                                                    pdftotext(1)

NAME
       pdftotext - Portable Document Format (PDF) to text converter (version 3.03)

SYNOPSIS
       pdftotext [options] [PDF-file [text-file]]

DESCRIPTION
       Pdftotext converts Portable Document Format (PDF) files to plain text.

       Pdftotext reads the PDF file, PDF-file, and writes a text file, text-file.  If text-file is not specified, pdftotext converts file.pdf to file.txt.  If text-file is '-', the text is sent to stdout.

OPTIONS
       -f number
              Specifies the first page to convert.

       -l number
              Specifies the last page to convert.

       -r number
              Specifies the resolution, in DPI.  The default is 72 DPI.

       -x number
              Specifies the x-coordinate of the crop area top left corner

       -y number
              Specifies the y-coordinate of the crop area top left corner

       -W number
              Specifies the width of crop area in pixels (default is 0)

       -H number
              Specifies the height of crop area in pixels (default is 0)

       -layout
              Maintain (as best as possible) the original physical layout of the text.  The default is to 'undo' physical layout (columns, hyphenation, etc.) and output the text in reading order.

       -fixed number
              Assume fixed-pitch (or tabular) text, with the specified character width (in points).  This forces physical layout mode.

       -raw   Keep the text in content stream order.  This is a hack which often "undoes" column formatting, etc.  Use of raw mode is no longer recommended.

       -htmlmeta
              Generate a simple HTML file, including the meta information.  This simply wraps the text in <pre> and </pre> and prepends the meta headers.

       -bbox  Generate an XHTML file containing bounding box information for each word in the file.

       -bbox-layout
              Generate an XHTML file containing bounding box information for each block, line, and word in the file.

       -enc encoding-name
              Sets the encoding to use for text output. This defaults to "UTF-8".

       -listenc
              Lits the available encodings

       -eol unix | dos | mac
              Sets the end-of-line convention to use for text output.

       -nopgbrk
              Don't insert page breaks (form feed characters) between pages.

       -opw password
              Specify the owner password for the PDF file.  Providing this will bypass all security restrictions.

       -upw password
              Specify the user password for the PDF file.

       -q     Don't print any messages or errors.

       -v     Print copyright and version information.

       -h     Print usage information.  (-help and --help are equivalent.)

BUGS
       Some PDF files contain fonts whose encodings have been mangled beyond recognition.  There is no way (short of OCR) to extract text from these files.

EXIT CODES
       The Xpdf tools use the following exit codes:

       0      No error.

       1      Error opening a PDF file.

       2      Error opening an output file.

       3      Error related to PDF permissions.

       99     Other error.

AUTHOR
       The pdftotext software and documentation are copyright 1996-2011 Glyph & Cog, LLC.

SEE ALSO
       pdfdetach(1), pdffonts(1), pdfimages(1), pdfinfo(1), pdftocairo(1), pdftohtml(1), pdftoppm(1), pdftops(1), pdfseparate(1), pdfsig(1), pdfunite(1)

                                                                                                                       15 August 2011                                                                                                           pdftotext(1)