0
Image processed successfully.
Convert image to farbfeld
2ff
2ff reads an image from stdin, converts it to farbfeld(5) and writes the result to stdout.
2ff is a wrapper script around the farbfeld conversion tools with a fallback to obtaining a PNG using ImageMagick(1) and passing it through png2ff(1).
In case of an error 2ff writes a diagnostic message to stderr.
0
Image processed successfully.
1
An error occurred.
$ 2ff < image.* > image.ff
$ 2ff < image.* | bzip2 > image.ff.bz2
Unchanged in 4 releases since Debian 10 (Buster).