Ghostscript Node execFile (util.promisify) Compress PDF

gs.js

await execFile(GHOST_SCRIPT_PATH,[
  `-q`,`-dNOPAUSE`, `-dBATCH`,`-dSAFER `,
  `-sDEVICE=pdfwrite`,
  `-dCompatibilityLevel=1.3`,
  `-dPDFSETTINGS=/screen `,
  `-dEmbedAllFonts=true`,
  `-dSubsetFonts=true`,
  `-dColorImageDownsampleType=/Bicubic`,
  `-dColorImageResolution=300`,
  `-dGrayImageDownsampleType=/Bicubic`,
  `-dGrayImageResolution=300`,
  `-dMonoImageDownsampleType=/Bicubic`,
  `-dMonoImageResolution=300`,
  `-sOutputFile=${outputPath}`,
  `${inputPath}`
]);