Compress a PDF on Mac
Shrink image-heavy PDFs for email and upload.
Three steps. That's it.
- 1
Drop your files
Drag files onto Compress PDF, choose them with Choose Files, or right-click them in Finder.
- 2
Choose the options
There's nothing to set up. It just works.
- 3
Get the result
The result lands in a new dated folder in Downloads › OneMacTools. Your originals are never changed.
What Compress PDF does
Re-save the images inside a PDF at screen quality as JPEG, which often makes scanned and photo-heavy PDFs several times smaller.
It's also a Finder Quick Action: right-click files and choose OMT: Compress PDF.
Options
Great for
- Email a scanned contract
- Upload a PDF to a form with a size limit
- Save space in your document archive
Questions about Compress PDF
Does Compress PDF upload my files?
No. Compress PDF runs entirely on your Mac, so your files never leave it and it works offline.
Will Compress PDF change my original files?
No. Results are saved as new files in a dated folder in Downloads › OneMacTools, and your originals are left exactly as they were unless you turn on an option that says otherwise.
What does Compress PDF need?
Just a Mac with macOS 26 or later. There's nothing else to install.
Can I use Compress PDF from Finder?
Yes. Right-click files in Finder and choose Quick Actions › “OMT: Compress PDF”. It runs in the background and notifies you when it's done.
Related PDF tools
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Extract PagesPull the pages you want out into a new PDF.
Rotate PDF PagesTurn some or all pages the right way up.
Compress PDF, plus 88 more.
One app. One price.
All 89 tools for $29, once. 14-day money-back guarantee.