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Do you have any examples of zipped bmp's compared to png. Seem strange if that was indeed better.
by PetahNZ 7y ago
Do you have any examples of zipped bmp's compared to png. Seem strange if that was indeed better.
- clarry 7y agoWell I just took a screenshot and tried it. BMP: 6MB. lzma-compressed bmp: 75K. PNG through optipng and pngcrush: 178k. Not very surprising imho. PNG was never a strong compression format to begin with.
- Dylan16807 7y agoIt shouldn't be that surprising. PNG has a maximum window size of 32KB. That means you could use a small set of identical tiles to make an image, and PNG would have to store a new copy every row, because the previous row is out of range.