npm install -g spreaker-css-inliner

Read an input file or stdin, inline styles and save the output to a new file or stdout.

Options:
  -i, --input          Input file
  -o, --output         Output file
  -p, --preserve-mq    Preserve media queries  [default: false]
  -r, --remove-styles  Remove styles tag       [default: false]
  -h, --help           Show this help

inline -i input.html -o output.html

cat input.html | inline > output.html