Color photos and images within Adobe Acrobat PDF and Microsoft PowerPoint slides can create very large print files that either take forever to print, or worse, it can cause the print job to error when printing and not print out at all. To avoid that, you can print your PDFs and PowerPoint slides as grayscale rather than color to reduce the size.

Printing in grayscale (black and white) in Adobe Acrobat

acrobat print dialog

Printing in grayscale (black and white) in PowerPoint

powerpoint print dialog


You can also reduce the size further by re-saving the file using "Save As," and by using the Compress Pictures option in Microsoft Office products (Select the photo or image and then select Picture Tools).

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