How to concatenate icons into a single image with ImageMagick?

Question

I want to use CSS sprites on a web site instead of separate image files, for a large collection of small icons that are all the same size. How can I concatenate (tile) them into one big image using ImageMagick?

Answer 1

Use the 'montage' tool: here are some instructions

Answer 2

I like this script for automatical sprite/css generation. "Building CSS sprites with Bash & Imagemagick"