Compress images to ~100kb

gistfile1.txt

import os
from PIL import Image
import shutil
import io

def get_image_size(image, quality=95):
    buffer = io.BytesIO()
    image.save(buffer, format='JPEG', optimize=True, quality=quality)
    return len(buffer.getvalue()) // 1024

def resize_image(source_folder, target_folder, min_target_kb=90, max_target_kb=110):
    if not os.path.exists(target_folder):
        os.makedirs(target_folder)

    for filename in os.listdir(source_folder):
        if filename.endswith(('.jpg', '.jpeg', '.png')):
            file_path = os.path.join(source_folder, filename)

            new_filename = f"resized_{filename}"
            new_file_path = os.path.join(target_folder, new_filename)

            image = Image.open(file_path)

            # Initial resizing
            aspect_ratio = float(image.width) / float(image.height)
            new_width = int((max_target_kb * 1024) ** 0.5)
            new_height = int(new_width / aspect_ratio)
            resized_image = image.resize((new_width, new_height), Image.ANTIALIAS)

            # Fine-tuning dimensions
            current_size_kb = get_image_size(resized_image)
            while current_size_kb < min_target_kb:
                new_width += 1
                new_height = int(new_width / aspect_ratio)
                resized_image = image.resize((new_width, new_height), Image.ANTIALIAS)
                current_size_kb = get_image_size(resized_image)

            if image.mode in ("RGBA", "P"):
                resized_image = resized_image.convert("RGB")

            resized_image.save(new_file_path, optimize=True, quality=95)
            
source_folder = 'C:/Users/User/Desktop/images_pre'
target_folder = 'C:/Users/User/Desktop/images_post'

resize_image(source_folder, target_folder)