semi-related since the post is talking about Rust, oxipng is a decently fast PNG optimizer, albeit not an encoder per se: https://github.com/shssoichiro/oxipng

semi-related since the post is talking about Rust, oxipng is a decently fast PNG optimizer, albeit not an encoder per se: https://github.com/shssoichiro/oxipng https://github.com/shssoichiro/oxipng