: Color number is just half the game. The other is to compress the picture after color reduction. This lossless compression, searches for repeated patterns in scanline order. Long story, in short:

@Gail6891361

Color number is just half the game. The other is to compress the picture after color reduction. This lossless compression, searches for repeated patterns in scanline order.

Long story, in short: When you add the logo you are increasing the image variability, entropy. Compression gets worse the more entropy there is in the image, as the computer can nolonger find as many repeated patterns. Thus doubling complexity of image roughly speaking doubles your file size.

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