imagemagick is the swiss army knife of image manipulation tools
- how to create the best possible avif file
- how to convert to grayscalegrayscale
ways to convert an image to grayscale
gimp: https://www.gimp.org/tutorials/Color2BW/
imagemagick
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
https://legacy.imagemagick.org/discourse-server/viewtopic.php?... - how to rotate
- how to crop
- how to create anaglyphs
- how to watermark
- how to edit the exim file
- how to license the image
- how to put the description in the image