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Vocaned/emptypng.py

Last active June 29, 2025 08:54
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generate an empty png with 1x0 pixel dimension
Raw
emptypng.py
import struct
import zlib
import base64
def chunk(t, data):
return (struct.pack('>I', len(data)) + t + data
+ struct.pack('>I', zlib.crc32(t + data)))
png = (b'\x89PNG\r\n\x1A\n'
+ chunk(b'IHDR', struct.pack('>IIBBBBB', 1, 0, 1, 0, 0, 0, 0)) # https://www.w3.org/TR/png/#11IHDR
+ chunk(b'IEND', b''))
print(base64.b64encode(png).decode())
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