https://lists.suckless.org/dev/1703/31170.html
Re: [dev] [announce] ff2sixel: view farbfeld images in terminal from Ben Woolley on 2017-03-21 (dev...
images infrom bendevannounceview
https://convert.online/image/farbfeld-to-dds
FARBFELD to DDS Converter | ConvertOnline
Convert FARBFELD images to DDS online using our fast and secure FARBFELD to DDS converter. No software installation required.
dds converterfarbfeld
https://testing.docs.gimp.org/3.2/ja/file-farbfeld-export.html
5.18. Export Image as Farbfeld
exportimagefarbfeld