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This is the command exiftran that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



exiftran - transform digital camera jpeg images


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


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.


-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


-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).


Autorotate all jpeg files in the current directory:

exiftran -ai *.jpeg

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