EXIFTRAN(1) Transform digital camera jpeg images EXIFTRAN(1)
NAME
exiftran - transform digital camera jpeg images
SYNOPSIS
exiftran [options] file1 file2 ... fileN
exiftran -i [transform options] [others options] file1 file2 ... fileN
exiftran -o outputfile [transform options] [other options] inputfile
exiftran -d file1 file2 ... fileN > exifinfo
DESCRIPTION
Exiftran is a command line utility to transform digital camera jpeg im-
ages. It can do lossless rotations like jpegtran(1), but unlike jpeg-
tran(1) it cares about the EXIF data: It can rotate images automati-
cally by checking the exif orientation tag; it updates the exif infor-
mations 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 Mirror image vertically (top / bottom).
-F Mirror image horizontally (left to right).
-t Transpose (across UL-to-LR corner).
-T Transverse (across UR-to-LL corner).
-nt Don't transform exif thumbnail.
-ni Don't transform jpeg image. You might need this or the -nt op-
tion to fixup things in case you transformed 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.
-np Don't pare lost edges. By default exiftran don't preserve image
size of the images that do not meet a multiple of 8 pixels. He
prefers to cut a strip of a few pixels rather than offering a
damaged image. Use this option if you want them all the same.
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 in-place editing of the images. Exiftran allows multiple
input files then. You must specify either this option or a out-
put file with -o for all operations which modify the image (i.e.
everything but -d right now).
-b Create a backup file when doing in-place editing (imply -i).
-p Preserve timestamps (atime + mtime) when doing in-place editing
(imply -i).
EXAMPLES
Autorotate all jpeg files in the current directory:
exiftran -ai *.jpeg
SEE ALSO
exif(1), exiftags(1), jpegtran(1)
AUTHOR
Gerd Hoffmann <gerd@kraxel.org>
COPYRIGHT
Copyright (c) 2002-2012 Gerd Hoffmann <gerd@kraxel.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 MER-
CHANTABILITY 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.
EXIFTRAN 2.09 (c) 2002-2012 Gerd Hoffmann EXIFTRAN(1)
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