🎭 ShapeSuper2

Text → encryption → SIGNAL shapes + NOISE shapes → PNG. The shape map is stored in a standard tEXt chunk. The decoder handles PNG/JPEG/WEBP and warns if data was lost during conversion.

How it works: The password generates a unique alphabet of shapes. The message is encrypted, each byte is turned into a shape (SIGNAL). Noise shapes (NOISE) are added for masking. Visually, SIGNAL and NOISE are indistinguishable.
Warning: Messengers often convert PNG to JPEG. After that, the hidden data from the PNG tEXt chunk is lost. To be safe, send the file as a ZIP or use cloud storage.