Use Imagemagick to convert an uploaded image's color profile in Django

gistfile1.txt

# It took me a day to figure out a way of converting the color profile before sending an uploaded image off to S3; 
# The following works both for in-memory and temp file uploads (MemoryFileUploadHandler and TemporaryFileUploadHandler)

import subprocess
import logging
logger = logging.getLogger('imageprocessing')
color_profile = settings.BASE_DIR + 'sRGB.icc'  # It should be an absolute path pointing to the icc file
f = uploadedfile  # eg. the one you get from request.FILES.getlist(field_name)
command = ['convert', '-profile', color_profile, '-', '-']
try:
    proc = subprocess.Popen(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
    content, err = proc.communicate(f.file.read())
except subprocess.CalledProcessError as e:
    logger.error("Unable to convert image %s: error was %s" % (f, e))
except Exception as e:
    logger.error("Unexpected exception processing image %s (%s): error was %s" % (f, e))
else:
    f.file.seek(0)
    f.file.truncate()
    f.file.write(content)

# And now you can use f as normal, eg:
# Photo.objects.create(image=f)