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.
- -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.
