pngme-rs: a CLI program that allows you to hide secret messages in PNG files.
You can
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Encode a message into a PNG file
cargo run -- encode ./dice.png ruSt 'A secret message!' -
Decode a message stored in a PNG file
cargo run -- decode ./dice.png ruSt -
Remove a message from a PNG file
cargo run -- remove ./dice.png ruSt -
Print a list of PNG chunks that can be searched for messages
cargo run -- print ./dice.png