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 images. It can do lossless rotations like jpegtran(1), but unlike jpegtran(1) it cares about the EXIF data: It can rotate images automatically by checking the exif orientation tag; it updates the exif informations 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 option 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 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 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 # #