11-05-2022, 08:40 PM
This has come up before see: https://www.gimp-forum.net/Thread-Export...with-Alpha
I do not know how you get a anti-alised 8-bit palette, even with Gimp 2.10 which throws in an extra indexed entry you just get 2
Work-flow:
Black-on-White image
Colour-to-Alpha to make black on transparent
Mode -> Indexed 1 bit.
You do not say which OS you are using. If you can get a Gimp 2.8 that might work for you.
ImageMagick - Same as you, I can not see any way of getting a 1 bit png out.
I do not know how you get a anti-alised 8-bit palette, even with Gimp 2.10 which throws in an extra indexed entry you just get 2
Work-flow:
Black-on-White image
Colour-to-Alpha to make black on transparent
Mode -> Indexed 1 bit.
You do not say which OS you are using. If you can get a Gimp 2.8 that might work for you.
ImageMagick - Same as you, I can not see any way of getting a 1 bit png out.