img-tidy.py

import os
import sys
import random
import hashlib

# so that images have a uniform, non incremental naming scheme

BASE62 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
imgs = ['jpg', 'png', 'jpeg', 'webp']

try:
    arg_path = sys.argv[1]
except:
    print("must include path as arg")
    exit(1)

files = os.listdir(arg_path)

def file_hash(path):
    h = hashlib.sha256()
    with open(path, "rb") as f:
        while chunk := f.read(8192):
            h.update(chunk)
    return h.digest()

for file in files:
    path = os.path.join(arg_path, file)
    
    if file.split(".")[-1] not in imgs:
        continue
    
    h_bytes = file_hash(path)
    rng = random.Random(int.from_bytes(h_bytes, "big"))
    
    name = ''.join(rng.choices(BASE62, k=5)) + "." + file.split(".")[-1]
    name = os.path.join(arg_path, name)
    
    os.rename(path, name)
    print(f'{file:>12} -> {name}')