Can you convert from color to grayscale and/or black/white in Affinity Designer and/or Photo? - Pre-V2 Archive of Affinity on Desktop Questions (macOS and Windows) - Affinity | Forum
TIFF - Universal Document Converter
How to convert the colored tif picture into grayscale with corrosponding intensity? - Image Analysis - Image.sc Forum
RESOLVED] Can GDIplus save grayscale JPEG &/or TIFF as 8-BPP grayscale JPEG/ TIFF?-VBForums
How to convert a TIFF GIS file to be usable in GIMP and Blender as a heightmap · ImageMagick ImageMagick · Discussion #4325 · GitHub