PNG files represent the bulk of android image content, especially if you’ve got a lot of UI elements in your application (rather than photo data). But PNG files also represent a huge problem in terms of file size; They are easy to bloat, and too often, we don’t give them enough attention to make them smaller.
As Colt McAnlis, explains, shrinking PNG files is a problem that’s been solved for a long time now. There’s a federation of tools out there which only focus on improving & compressing PNG files even further than you get out of your photo editing tools.
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