Find the lowest height and lowest width among all images in a directory

How can I get the lowest height out of all heights and also the lowest width out of all widths given I have about 50k images?

I tried this command, but it only gives the width and height of an image:

identify -format '%w %h' 72028059_11.jpg
600 431

I also got this from IRC Linux channel, but, because I have 50k images, it takes forever to output any result:

find -type f -name \*.jpg -exec identify -format '%w %h %d/%f\n' {} \; | sort -n -k2

Getting the image with min height and width

I don't have any comparing statistics, but I have reasons to believe the script below offers a relatively good option, since:

• python's PIL does not load the image into memory when calling .open
• The script itself does not store the list of all files, it simply looks per file if the next one has a smaller height or width.

The script

#!/usr/bin/env python3
from PIL import Image
import os
import sys

path = sys.argv[1]
# set an initial value which no image will meet
minw = 10000000
minh = 10000000

for image in os.listdir(path):
    # get the image height & width
    image_location = os.path.join(path, image)
    im = Image.open(image_location)
    data = im.size
    # if the width is lower than the last image, we have a new "winner"
    w = data[0]
    if w < minw:
        newminw = w, image_location
        minw = w
    # if the height is lower than the last image, we have a new "winner"
    h = data[1]
    if h < minh:
        newminh = h, image_location
        minh = h
# finally, print the values and corresponding files
print("minwidth", newminw)
print("minheight", newminh)

How to use

1. Copy the script into an empty file, save it as get_minsize.py

2. Run it with the directory of images as argument:

   python3 /path/to/get_maxsize.py /path/to/imagefolder
   

Output like:

minwidth (520, '/home/jacob/Desktop/caravan/IMG_20171007_104917.jpg')
minheight (674, '/home/jacob/Desktop/caravan/butsen1.jpg')

NB

The script assumes the image folder is a "flat" directory with (only) images. If that is not the case, a few lines need to be added, just mention.