PDF · Compress PDF
The images get lighter while the text stays put.
MightyBench re-saves the images inside your PDF so it takes up less space, and leaves the text exactly as it was. If compressing wouldn’t help, you get an unchanged copy, never a bigger file.
One-time purchase · macOS 26 Tahoe or later, Apple silicon recommended
How it works
Three steps, start to finish.
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01
Open Compress PDF
Press ⌃⌥Space and type “shrink pdf”, or pick it from MightyBench’s menu bar icon.
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02
Add a PDF, choose a level
Drop in the PDF that’s too big to send. Choose Balanced to keep images at full size, or Smallest if it will only be read on screen.
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03
Press Compress
The compressed copy arrives in a new dated folder in Downloads › MightyBench. It’s never bigger than the original, which stays exactly where it was.
The details
Small things, done properly.
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Balanced keeps full size
Balanced re-saves images as JPEG but keeps them at full size, so nothing in the document is scaled down.
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Smallest, for screens
Smallest also scales images for screen reading, the better fit for PDFs that will mostly be read on a display.
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Text is left alone
Compression works on the images. Text is left exactly as it was, so it stays crisp and searchable.
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Never bigger than before
If compression wouldn’t help, you get an unchanged copy instead of a file that grew.
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Confidential stays local
Scans of IDs and signed contracts are compressed on your Mac with PDFKit. Nothing is uploaded and there’s no account.
Specs
Compress PDF, at a glance.
Shrink scans to a sendable size.
| Opens | |
|---|---|
| Saves as | |
| Settings | Level: Balanced or Smallest |
| Needs | Nothing extra |
| Originals | Never changed |
| Saved to | Downloads › MightyBench › date Compress PDF |
FAQ
Questions about Compress PDF
Anything else? Email support@mightybench.com and a person will reply.
How do I reduce the size of a PDF on a Mac?
Open Compress PDF, drop the file in, choose Balanced or Smallest and press Compress. The compressed copy goes to a new dated folder in Downloads › MightyBench.
What’s the difference between Balanced and Smallest?
Balanced re-saves images as JPEG at full size. Smallest does that and also scales the images down for reading on screen.
Does Compress PDF change the text?
No. Text is left exactly as it was. Compression is applied to the images inside the PDF.
What if my PDF can’t get any smaller?
Then you get an unchanged copy. Compress PDF never hands back a file bigger than the one you started with.
Is it safe to compress confidential PDFs?
Yes. Compression runs on your Mac with Apple’s PDFKit, with no account and no upload, so bank statements and contracts never leave your machine.
Plus forty-eight other tools.
Compress PDF comes with every other MightyBench tool: video, audio, images, PDFs and on-device AI in one native Mac app. Pay $39 once for one Mac, with every MightyBench 1.x update included.
One-time purchase · macOS 26 Tahoe or later, Apple silicon recommended