The PNG Guide is an eBook based on Greg Roelofs' book, originally published by O'Reilly.

Practical Compression Tips

I could hardly end this chapter without some practical pointers on optimizing PNG compression, both for users and for programmers. Herewith are some rough guidelines, arranged in descending order of effectiveness. Note that, as with any set of rules, there will always be exceptions.

Last Update: 2010-Nov-26