11-23-2015, 09:31 PM
I'm not sure (since I'm not very experienced with the PNG format) but I think that due to the large variation of colours, the compression doesn't manage to really cut it down all that much. Comparing this with a 100% white image of the same size, only ends up being 22KB since it's obviously very easy to losslessly compress an image of a single colour. The more colours you have (and the more often they change within the image), the harder it is to compress the data without losing quality.
That's my guess, anyway.
That's my guess, anyway.