Diff of lossypng

• The added line is THIS COLOR.
• The deleted line is THIS COLOR.
• Go to lossypng.

[[PNG#lossy]]

- https://github.com/foobaz/lossypng

- PNGの非可逆圧縮ーLossy PNG
--  https://qiita.com/te20/items/ba2f5dc8167c774b34f2