/usr/bin/odiff

Usage: /usr/bin/odiff <base_image> <comp_image> [diff_output] [options]

Options:
  -t, --threshold <value>     Color difference threshold (0.0-1.0, default: 0.1)
  --diff-mask                 Output only changed pixels over transparent background
  --diff-overlay <value?>     Render diff output on the white background
  --fail-on-layout            Fail if image dimensions differ
  --parsable-stdout           Machine-readable output format
  --diff-color <hex string>   Color for highlighting differences (e.g., #cd2cc9)
  --aa, --antialiasing        Ignore antialiased pixels in diff
  --output-diff-lines         Output line numbers with differences
  --output-diff-cols          Output column numbers with differences
  --reduce-ram-usage          Use less memory (slower)
  --enable-asm                Enable AVX-512 optimized asm path when supported (x86_64 only)
  --server                    Run in server mode (reads JSON from stdin)
  -i, --ignore <regions[]>    Ignore regions (format: x1:y1-x2:y2,x3:y3-x4:y4)
  -h, --help                  Show this help message
  --version                   Show version

Exit codes:
  0  - Images match
  21 - Layout difference (when --fail-on-layout is used)
  22 - Pixel differences found