1.4.6 • Published 16 days ago

@lpgroup/ghostscript v1.4.6

Weekly downloads
3
License
MIT
Repository
gitlab
Last release
16 days ago

ghostscript

npm version Known Vulnerabilities Licence MIT tested with jest codecov

Flatten and optimize PDF with shell command Ghostscript gsx.

Install

The npm module requires shell command Ghostscript to be installed on the machine.

# OSX
brew install ghostscript

# Alpine
apk update
apk add imagemagick ghostscript-fonts ghostscript

# Debian/ubuntu
apt-get update
apt-get install ghostscript

Installation of the npm

npm install @lpgroup/ghostscript

Example

const { readfilesync, writeFile } = require("fs");
const { resolve } = require("path");
const { optimize } = require("@lpgroup/ghostscript");

const fileIn = resolve("./test/flytt_uppdrag.pdf");
const fileOut = resolve("./test/flytt_uppdrag_optimized.pdf");

const input = readfilesync(fileIn);
optimize({ input }).then((output) => {
  writeFile(fileOut, output, "binary");
});

API

env DEBUG

This package uses the debug npm. Debug messages are printed to stdout if the follwoing is set.

export DEBUG=ghostscript

optimize({options})

Following are all values that can be used in options and the default values that are used if none is entered.

optimize({
  input,
  compressFonts: true,
  embedAllFonts: true,
  subsetFonts: true,
  dpi: 300,
  colorConversionStrategy: "RGB",
});

Raw shell command

Below is the shell command executed by node, if you'd like to optimize it further yourself. Credit goes to Matt DesLauriers and the repo http://github.com/mattdesl/gsx-pdf-optimize

Removed according to https://stackoverflow.com/questions/49686527/ghostscritpt-converted-file-not-view-able-in-adobe-reader -dPDFSETTINGS=/screen -dCompatibilityLevel=1.5

cat test/large-file.pdf | \
gsx -sDEVICE=pdfwrite \
-dNOPAUSE \
-dQUIET \
-dBATCH \
-dSubsetFonts=true \
-dCompressFonts=true \
-dEmbedAllFonts=true \
-sOutputFile=- - > flytt_uppdrag_optimized.pdf

Contribute

See contribute

License

MIT - See licence

pdfoptimizegsgsxghostscript
@lpgroup/utilsexeca
@everything-registry/sub-chunk-560
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