When using ImageMagick or similar command line tools it can be useful to know coordinates of some points in the image. How to display an image (with panning and zooming) and print coordinates of ...
I've got some scanned images in *.jpg format. They are scanned using A4 scanner, in greyscale or colour. Scanned pages have very different dimensions - some A5, some A6, some business cards etc. ...
I'm trying to create a gradient that goes from transparent to some color. With imageMagick you can do that with (taken from the documentation): convert -size 100x100 gradient:none-firebrick ...
Although GraphicsMagick is a fork of ImageMagick, there are dissimilarities between the two, namely in the support of image stacking in ImageMagick, but not in GraphicsMagick. Taken from the ...
How do I change the canvas size of a PNG with ImageMagick (GraphicsMagick)? (How to pad with transparency?)
Alternatively: How do I take a non-square PNG and "fill out" the "rest" of the image with transparency so that the resulting square image has the original image centered in the square? ULTIMATELY, ...