// IMAGE STEGANOGRAPHY LAB

Hide messages in pixels. LSB encoding across R/G/B/Alpha channels, pixel art quantization, PNG metadata — all client-side.

STEGO_LABv1.0 — image steganography terminal776f6c6e6f.org
$ select_image
$ method
$ message
$ output_preview
wolno. wszystko wolno. — works in browser, no server required. canvas api + web crypto only.

About this tool

Least Significant Bit (LSB) steganography modifies the last bit of each color channel value — a change of 1 that is imperceptible to the human eye but carries your hidden message. This implementation supports single-channel (R, G, or B), multi-channel RGB, and full RGBA encoding including the alpha channel.

The pixel art mode quantizes your image to a limited CRT-style palette using Floyd-Steinberg dithering, then optionally encodes a message in the result. All processing runs locally in your browser — no image is uploaded anywhere.

Source: stego-cli — standalone Python CLI for the same operations.