I'm looking for a software that turns several color PDF (around 1000) to grayscale or black & white. Do you have any recommendations?

  • Typically this is done when rasterizing. That is, when converting to an image or printing. Why is changing the actual PDF file itself to grayscale or b/w important for you? – Ryan Jan 3 '17 at 16:58
  • Thanks for your reply. Our compagny would like to extract some informations from several handwrited documents, scanned and saved as PDF. We work with a start-up for that and they told us that they need to have grayscale or black and white PDF as an input, I couldn't say why, maybe they use some image recognizion algorithm for that and grayscale PDF are simplier to handle. – Abyuks Jan 3 '17 at 21:20

You can do it from Adobe Reader using Adobe PDF printer. Just go to Print (Ctrl+P) and select grayscale.

More info here.

Gray Scale

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