As Tim said, if you have Adobe Pro then it will reduce the size of all files in a folder:
http://www.affinityconsulting.com/technology-tips/225-batch-reduction-of-file-size-in-acrobat-pro-save-space-time
You can also use the "Action Wizard" in Adobe Pro to export images as jpg or png and then compress them. I've had good results using TinyJPG:
https://tinyjpg.com/
This software also claims to do the same (untested by myself though):
http://www.pdfcompressor.org/reduce-pdf-file-size.html
Good luck
Tom
-----Original Message-----
From: Research Data Management discussion list [mailto:[log in to unmask]] On Behalf Of John Milner
Sent: 08 July 2015 09:00
To: [log in to unmask]
Subject: Converting overlarge PDF scans
I have a large number of historic papers that appear to have been scanned as bitmaps and then presented as PDFs. The result is files that are around 30mb and upwards to 100mb in some cases. Does anyone know if there is any way these can be reduced in size?
John K. Milner
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