Resize image in Python without losing EXIF data

Question

I need to resize jpg images with Python without losing the original image\'s EXIF data (metadata about date taken, camera model etc.). All google searches about python and i

Answer 1

It seems @Depado's solution does not work for me, in my scenario the image does not even contain an exif segment.

pyexiv2 is hard to install on my Mac, instead I use the module pexif https://github.com/bennoleslie/pexif/blob/master/pexif.py. To "add exif segment" to an image does not contain exif info, I added the exif info contained in an image which owns a exif segment

from pexif import JpegFile

#get exif segment from an image
jpeg = JpegFile.fromFile(path_with_exif)
jpeg_exif = jpeg.get_exif()

#import the exif segment above to the image file which does not contain exif segment
jpeg = JpegFile.fromFile(path_without_exif)
exif = jpeg.import_exif(jpeg_exif)
jpeg.writeFile(path_without_exif)

Answer 2

Updated version of Maksym Kozlenko Python3 and py3exiv2 v0.7

# Resize image and update Exif data
from PIL import Image
import pyexiv2

def resize_image(source_path, dest_path, size):
    # resize image
    image = Image.open(source_path)
    # Using thumbnail, then 'size' is MAX width or weight
    # so will retain aspect ratio
    image.thumbnail(size, Image.ANTIALIAS)
    image.save(dest_path, "JPEG")

    # copy EXIF data
    source_exif = pyexiv2.ImageMetadata(source_path)
    source_exif.read()
    dest_exif = pyexiv2.ImageMetadata(dest_path)
    dest_exif.read()
    source_exif.copy(dest_exif,exif=True)

    # set EXIF image size info to resized size
    dest_exif["Exif.Photo.PixelXDimension"] = image.size[0]
    dest_exif["Exif.Photo.PixelYDimension"] = image.size[1]
    dest_exif.write()

Answer 3

Here's an updated answer as of 2018. piexif is a pure python library that for me installed easily via pip (pip install piexif) and worked beautifully (thank you, maintainers!). https://pypi.org/project/piexif/

The usage is very simple, a single line will replicate the accepted answer and copy all EXIF tags from the original image to the resized image:

import piexif
piexif.transplant("foo.jpg", "foo-resized.jpg")

I haven't tried yet, but it looks like you could also perform modifcations easily by using the load, dump, and insert functions as described in the linked documentation.

Answer 4

import jpeg
jpeg.setExif(jpeg.getExif('foo.jpg'), 'foo-resized.jpg') 

http://www.emilas.com/jpeg/

Answer 5

PIL handles EXIF data, doesn't it? Look in PIL.ExifTags.