pamscale
Scale a Netpbm image. tldr-pages
On several platforms
Several platforms
Scale an image such that the result has the specified dimensions
pamscale -width width -height height path/to/input.pam >path/to/output.pamIdentifyScale an image such that the result has the specified width, keeping the aspect ratio
pamscale -width width path/to/input.pam >path/to/output.pamIdentifyScale an image such that its width and height is changed by the specified factors
pamscale -xscale x_factor -yscale y_factor path/to/input.pam >path/to/output.pamIdentifyScale an image such that it fits into the specified bounding box while preserving its aspect ratio
pamscale -xyfit bbox_width bbox_height path/to/input.pam >path/to/output.pamIdentifyScale an image such that it completely fills the specified box while preserving its aspect ratio
pamscale -xyfill box_width box_height path/to/input.pam >path/to/output.pamIdentify