pnmindex

Build a visual index of multiple PNM images. tldr-pages

On several platforms

Several platforms

Produce an image containing thumbnails of the specified images in a grid

pnmindex path/to/input1.pnm path/to/input2.pnm ... >path/to/output.pnmIdentify

Specify the size of the (quadratic) thumbnails

pnmindex -size 50 path/to/input1.pnm path/to/input2.pnm ... >path/to/output.pnmIdentify

Specify the number of thumbnails per row

pnmindex -across 10 path/to/input1.pnm path/to/input2.pnm ... >path/to/output.pnmIdentify

Specify the maximum number of colors in the output

pnmindex -colors 512 path/to/input1.pnm path/to/input2.pnm ... >path/to/output.pnmIdentify