how to create the best possible avif file

how to convert to [grayscale[[grayscale]{.tooltip-title}
[ways to convert an image to grayscale


This will use one of the -intensity methods to convert the given image into a grayscale image.
For example, to convert an image to (linear) Rec709Luminance grayscale, type:
convert in.png -grayscale Rec709Luminance out.png # which is equivalent to:
convert in.png -set colorspace RGB -colorspace gray out.png

anaglyph grayscale]{.tooltip-excerpt}]{.right .bottom}]{.tooltip}

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