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)