Calling
image = Image.open(data)
image.thumbnail((36,36), Image.NEAREST)
will maintain the aspect ratio. But I need to end up displaying the image like this:
<img src="/media/image.png" style="height:36px; width:36px" />
Can I have a letterbox style with either transparent or white around the image?
Update of Cesar Canassa's answer.
This will create a thumbnail of image.jpg as image_thumb.jpg:
from PIL import Image, ImageOps
fname = 'image.jpg'
size = (48,48)
thumb = ImageOps.fit(Image.open(fname), size, Image.ANTIALIAS)
thumb.save('{}_thumb.jpg'.format(fname[:fname.rfind('.')]), "JPEG")
Why not simply use the resize method ?
from PIL import Image
image = Image.open('/path/to/img.png')
image = image.resize((36,36), Image.ANTIALIAS)
See recommendations for image resizing in this release note: https://pillow.readthedocs.io/en/stable/releasenotes/5.3.0.html
you can wrap Nadia's answer in this function, which gives you control over size and background.
def make_square(im, min_size=36, fill_color=(255, 255, 255, 0)):
x, y = im.size
size = min(min_size, x, y)
new_im = Image.new('RGBA', (size, size), fill_color)
im.thumbnail((256, 256))
new_im.paste(im, (int((x - size) / 2), int((y -size) / 2))
return new_im