zsteg
Steganography detection tool for PNG and BMP file formats.
TLDR
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]
