Nanfeng

Notes on software development, code, and curious ideas

Find Images Larger Than 500 KB Recursively with python

In
Use python os.walk to scan nested project folders, filter image extensions over 500 KB, and write absolute file paths to a text report for optimization.

Large images in an exported web project can increase loading time. This script recursively scans a directory and writes paths for images larger than 500 KB to large_images.txt.

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import os

def find_large_images(directory, size_limit_kb, output_file):
    with open(output_file, 'w', encoding='utf-8') as output:
        for root, _, files in os.walk(directory):
            for name in files:
                path = os.path.join(root, name)
                size_kb = os.path.getsize(path) / 1024
                is_image = name.lower().endswith(('.png', '.jpg', '.jpeg', '.gif', '.bmp'))
                if is_image and size_kb > size_limit_kb:
                    output.write(path + '\n')

if __name__ == '__main__':
    directory = input('Directory to scan: ')
    find_large_images(directory, 500, 'large_images.txt')
    print('Finished. Results were saved to large_images.txt')
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