ohazot_netpbm

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netpbm — usage and examples

DESCRIPTION

Netpbm is an image manipulation set packages.

CONVERSION

All packages output to stdin, they need to be redirected to a file or piped to another program as shown in the example.

text to image

asciitopgm HEIGHT WIDTH
  ASCIIFILE

image crop

pnmcrop [-white|-black]
  IMAGE_FILE

enlarge

pamenlarge -scale INT_SCALE
  IMAGE_FILE

convert to jpeg

pnmtojpeg IMAGE_FILE

EXAMPLE

This is the code used to create the favicon for this site:

(echo "#######" && figlet -f letter O | tr ' o' '##' | sed "s/^/#/;3s/#O###O/#O---O/") | \
asciitopgm 100 100 - | pnmcrop -white | pamenlarge -scale 200 | pnmtojpeg > netpbm_example.jpeg