zsteg
Steganography detection tool for PNG and BMP file formats.
It detects LSB steganography, ZLIB-compressed data, OpenStego, Camouflage and LSB with the Eratosthenes set.
More information: https://github.com/zed-0xff/zsteg.
Detect embedded data in a PNG image:
zsteg {{path/to/image.png}}
Detect embedded data in a BMP image, using all known methods:
zsteg --all {{path/to/image.bmp}}
Detect embedded data in a PNG image, iterating pixels vertically and using MSB first:
zsteg --msb --order yx {{path/to/image.png}}
Detect embedded data in a BMP image, specifying the bits to consider:
zsteg --bits {{1,2,3|1-3}} {{path/to/image.bmp}}
Detect embedded data in a PNG image, extracting only prime pixels and inverting bits:
zsteg --prime --invert {{path/to/image.png}}
Detect embedded data in a BMP image, specifying the minimum length of the strings to be found and the find mode:
zsteg --min-str-len {{10}} --strings {{first|all|longest|none}} {{path/to/image.bmp}}
