Python / Pillow: How to scale an image
Noo need to reinvent the wheel, there is the Image.thumbnail method available for this:
maxsize = (1028, 1028)image.thumbnail(maxsize, PIL.Image.ANTIALIAS)Ensures the resulting size is not bigger than the given bounds while maintains the aspect ratio.
Specifying PIL.Image.ANTIALIAS applies a high-quality downsampling filter for better resize result, you probably want that too.
Use Image.resize, but calculate both width and height.
if image.width > 1028 or image.height > 1028: if image.height > image.width: factor = 1028 / image.height else: factor = 1028 / image.width tn_image = image.resize((int(image.width * factor), int(image.height * factor)))