Set any white pixels to transparent in ImageMagick using a threshold?

Question

Using ImageMagick, I want to find any pixels that are white and make them transparent. I'm thinking the key is -threshold but I can't work out how to change a white pixel to transparent using -threshold. Any suggestions most appreciated.

Without threshold: http://stackoverflow.com/questions/9155377/set-transparent-background-using-imagemagick-and-commandline-prompt — Ciro Santilli OurBigBook.com, Jan 21 '17 at 00:15

score 15 · Answer 1 · answered Jun 21 '12 at 21:25

15

convert input.png -fuzz 10% -transparent white output.png

Note that the order of the arguments is important - -fuzz must come before -transparent.

answered Jun 21 '12 at 21:25

Brad

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score 4 · Answer 2 · answered Nov 15 '11 at 16:32

4

Would something like this work?

convert input.jpg -fuzz 5% -fill to_color -opaque from_color output.jpg

answered Nov 15 '11 at 16:32

Mech

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Set any white pixels to transparent in ImageMagick using a threshold?

2 Answers2

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