NAME

       exiftran - transform digital camera jpeg images

SYNOPSIS

       exiftran [ options ] file(s)

DESCRIPTION

       exiftran  is a command line utility to transform digital image jpeg images.  It can do lossless rotations
       like jpegtran, but unlike jpegtran it cares about the EXIF data: It can rotate  images  automatically  by
       checking  the  exif  orientation  tag,  it  updates  the  exif  informaton  if  needed  (image dimension,
       orientation), it also rotates the exif thumbnail.  It can process multiple images at once.

TRANSFORM OPTIONS

       -a     automatic (using exif orientation tag)

       -9     rotate by 90 degrees clockwise

       -1     rotate by 180 degrees clockwise

       -2     rotate by 270 degrees clockwise

       -f     flip vertical

       -F     flip horizontal

       -t     transpose

       -T     transverse

       -nt    Don't rotate exif thumbnail.

       -ni    Don't rotate jpeg image. You might need this or or the -nt option to  fixup  things  in  case  you
              rotated  the  image  with  some  utility  which  ignores the exif thumbnail. Just generating a new
              thumbnail with -g is another way to fix it.

       -no    Don't update  the  orientation  tag.   By  default  exiftran  sets  the  orientation  to  "1"  (no
              transformation  needed)  to  avoid other exif-aware applications try to rotate the already-rotated
              image again.

OTHER OPTIONS

       -h     print a short help text

       -d     Dump exif data for the file(s).

       -c <text>
              Set jpeg comment tag to <text>.

       -g     (re)generate EXIF thumbnail.

       -o <file>
              Specify output file.  Only one input file is allowed in this mode.

       -i     Enable inplace editing of the images.  Exiftran  allows  multiple  input  files  then.   You  must
              specify  either  this  option  or  a output file with -o for all operations which modify the image
              (i.e. everything but -d right now).

       -b     Create a backup file when doing inplace editing.

       -p     Preserve timestamps (atime + mtime) when doing inplace editing.

EXAMPLES

       Autorotate all jpeg files in the current directory:
          exiftran -ai *.jpeg

SEE ALSO

       jpegtran(1), exif(1)

AUTHOR

       Gerd Knorr <kraxel@bytesex.org>

COPYRIGHT

       Copyright (C) 2002 Gerd Knorr <kraxel@bytesex.org>

       This program is free software; you can redistribute it and/or modify  it  under  the  terms  of  the  GNU
       General  Public License as published by the Free Software Foundation; either version 2 of the License, or
       (at your option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY  WARRANTY;  without  even
       the  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
       License for more details.

       You should have received a copy of the GNU General Public License along with this program; if not,  write
       to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

                                             (c) 2003,04 Gerd Knorr                                  exiftran(1)