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Compress a PDF

To Compress a PDF using built-in tools

To save storage space, you can compress a PDF in Preview.
Open the PDF, then choose File > Export.
Click the Quartz Filter pop-up menu, then choose Reduce File Size.

Note: when compressed, the PDF may be of lower quality than the original.




My latest blog post: Ask Doctor Google: Do I not trust doctors? Well, to some extent I do, but I would prefer an AI any day! (posted 2026-05-06).

My latest podcast: OJB's Podcast 2026-04-25 Think For Yourself.

If you're not sure what to view from my site, here are some suggestions: My Latest Airshow Report, My Favourite Wines and Beers, An Interesting Astronomical Observation, See Some Photos, Read Some Mac Tips.

Site News (Mobile): OJB's web site, v 2.4 which has major changes, and possibly errors! Please report anything to ojb@mac.com.