A Gimp script for a friend to help them convert their photo collection from HEIC to JPEG. To run open up Gimp, go to Filters -> Python-Fu -> Console and paste the script below. Make sure to edit the last line with your photo directory. For the JPEG output it uses 95% quality and the rest of the settings are maxed out (floating-point dct and 4:4:…

gimp_heic_convert.py

import gimpfu
import os
import re
import traceback

heic_ext_re = re.compile(r'\.heic$', re.IGNORECASE)

def convert(filename):
    new_name = heic_ext_re.sub('.jpg', filename)
    
    if os.path.isfile(new_name):
        print('skipping ' + filename)
        return
    else:
        print('converting ' + filename)
    
    quality = 0.95   # 95%. Set to 1.0 for 100% quality.
    smoothing = 0.0
    optimize = 1
    progressive = 1
    comment = None
    subsmp = 2       # 4:4:4
    baseline = 0
    restart = 0
    dct = 2          # floating-point
    
    image = pdb.gimp_file_load(filename, filename)
    layer = pdb.gimp_image_get_active_layer(image)
    pdb.file_jpeg_save(image, layer, new_name, new_name, quality, smoothing,
                       optimize, progressive, comment, subsmp, baseline, restart,
                       dct)

def convert_heic_in_dir(root):
    root = os.path.normpath(root)
    
    for file in os.listdir(root):
        if heic_ext_re.search(file):
            filename = os.path.join(root, file)
            
            try:
                convert(filename)
            except Exception as exc:
                print('Error converting %s:' % filename)
                traceback.print_exc()

# Put your photos directory here
convert_heic_in_dir(r'C:\Users\bno1\Desktop')

Thanks.