268k BMP

196k PNG Full color, lossless

98.8k PNG Full color, lossy (-10 quality)

68.7k PNG Full color, lossy (-20 quality)

49.7k PNG Full color, lossy (-30 quality)

61.2k PNG 256 color, dithered, lossless

70.1k PNG 256 color, dithered, lossy (-10 quality)

66.4k PNG 256 color, dithered, lossy (-30 quality)

119k JPG High quality

28.3k JPG Mid quality

10.5k JPG Low quality

Re-saving a lossy PNG losslessly results in no further quality loss, and identical filesize.Re-saving a lossy PNG lossily increases quality degradation, and results in only minor reduction of filesize.
Lossy (-30) PNG re-saved losslessly, 49.7k
Lossy (-30) PNG re-saved lossily (-30), 47.8k


COMPARISON:

196k PNG Full color, lossless

68.7k PNG Full color, lossy (-20 quality)

119k JPG High quality



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