I need to crop a bunch of jpegs by 20 pixels on the right side losslessly. Do you know about any software that can do that? I checked jpegtran but it needs the file size in pixels before cropping and I don't know how to build a batch file with that. Any ideas?
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My shell scripting is a little rusty so please make a backup of your images before trying this script.
Points to note:
identify
is an ImageMagick commandawk
will grab the pixel dimensions fromidentify
to use as a parameter (with the width reduced by 20px) forjpegtran
to crop the imagenew_[old_name].jpg
jpegtran
might adjust the cropping region so that it can perform losslessly. Check that the resulting images are the correct size and not slightly larger.BatchCrop can do this. It supports both Windows and Mac.
www.batchcrop.com