Convert color PDF to black and white #

After exhausting the usual suspects (Adobe Acrobat, ImageMagick, Ghostscript, etc.), stumbled onto the cleanest results and smallest file size by pairing Preview.app and IrfanView:

  1. Open color.pdf (96.9MB) in Preview.app
  2. Open bw.pdf (235.4MB) in Preview.app
  3. Open bw.tif (109.5MB) in IrfanView
  4. Open bw2.tif (3.9MB) in IrfanView

/misc | Apr 15, 2021


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