xwdtopnm
Convert XWD screenshots to PNM format
TLDR
Convert an XWD file to PNM
$ xwdtopnm [input.xwd] > [output.pnm]
Read from stdin and write to stdout$ cat [input.xwd] | xwdtopnm > [output.pnm]
SYNOPSIS
xwdtopnm [file]
DESCRIPTION
xwdtopnm reads an X Window Dump (XWD) image as input and produces a PNM (Portable aNy Map) image as output. XWD files are typically created by the X11 xwd utility for capturing window screenshots.If no input file is specified, xwdtopnm reads from standard input. Output is always written to standard output. The output format (PBM, PGM, or PPM) depends on the color depth of the input image.This tool is part of the Netpbm toolkit, a collection of image conversion and manipulation utilities.
INSTALL
sudo apt install netpbm
sudo dnf install netpbm
sudo pacman -S netpbm
sudo apk add netpbm
sudo zypper install netpbm
brew install netpbm
nix profile install nixpkgs#netpbm