I have an atlas of assets in a transparent png with 8-bit alpha (660kb) and I want to compress it.
Could you suggest what options do I have? When using a pngquant (I'm using SuperPNG plugin for Photoshop), I'm getting a 58kb file but color is transformed to 8bit palette and there's not enough colors to have smooth gradients (balloons are a good example). The original atlas I'm working with has two times more assets so compression is even more visible...
Is it possible to get something like in-between result? I'd be happy with 150-200kb file with more colors and alpha. Maybe I can use imagemagick with some funny options?