Compress PDF on Mac
Compress PDF on your Mac without installing Acrobat, downloading an app from the Mac App Store, or paying for extra software. ContinuePDF runs right in Safari or Chrome on macOS, so you can compress your PDF using the browser you already have open. It works the same on Apple Silicon (M-series) and Intel Macs, and needs no admin password to run.
Start Compress PDF NowHow to Compress PDF on Mac
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Open the tool in Safari or Chrome
On your Mac, go to continuepdf.com and open Compress PDF. No install and no admin rights needed.
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Drag your PDF from Finder
Drag files straight from a Finder window onto the page, or click to browse your Mac.
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Download to your Mac
Run the tool and compressed PDF lands in your Downloads folder (or wherever Safari saves files).
What you can do with Compress PDF
Compressing rewrites a PDF so it takes up less space — mainly by optimising embedded images and stripping redundant data — making the file easier to email, upload, or store.
Get under an email limit
Shrink a photo-heavy PDF so it fits within a 10 MB or 25 MB attachment cap.
Speed up a web upload
Reduce a large scan before submitting it to a government portal, job application, or loan form that rejects big files.
Save storage space
Compress archived documents so a folder of scans takes a fraction of the disk or cloud space.
Share faster
Send a lighter file that downloads quickly for recipients on slow or mobile connections.
Compress PDF on macOS the easy way
macOS Preview is great for viewing and light markup, but it can't do everything, and full Adobe Acrobat is a paid subscription that many Mac users would rather avoid installing. For a one-off or occasional compress job, downloading and licensing heavy software is overkill.
ContinuePDF fills that gap. It runs entirely in your Mac's browser, so there is nothing to install, nothing to update, and nothing that needs your admin password. Drag your PDF in from Finder, compress it, and the compressed PDF downloads locally — all without your files ever leaving your Mac.
Why choose ContinuePDF
No install
Runs in Safari or Chrome — no App Store download, no admin password.
Finder drag-and-drop
Drop files straight from a Finder window onto the page.
Apple Silicon & Intel
Works identically on M-series and Intel Macs.
Private to your Mac
Files are processed on your Mac and never uploaded.
Pro tip
Most of a PDF's size usually comes from scanned pages and embedded photos, not text. If a file is still too big after compressing, check whether it is a scan — reducing image resolution has the biggest effect, while a text-only PDF is already small.
Frequently asked questions
Will compressing make my PDF look worse?
At a moderate level, text and vector graphics stay sharp and the savings come from optimising images, so documents still look clean. The strongest setting works harder — it can even convert pages to images to shrink the file further, which softens photos and makes text non-selectable — so choose a moderate level when you need to keep text crisp and selectable.
Why didn't my PDF get much smaller?
If the file is mostly selectable text, it is already efficient and there is little to remove. The biggest savings come from PDFs built around high-resolution images or scans.
How do I compress a PDF on a Mac?
Open Compress PDF in Safari or Chrome on your Mac, drag your PDF in from Finder (or click to browse), run the tool, and compressed PDF downloads to your Downloads folder. No software installation is required.
Do I need Adobe Acrobat on my Mac?
No. ContinuePDF handles the compress job right in your browser, so you don't need Acrobat or any paid macOS app. It also does more than Preview can, without any download.
Is ContinuePDF free to use?
Yes. ContinuePDF and all of its tools, including Compress PDF, are free with no signup required. Because documents are processed in your browser rather than on our servers, we can offer the full feature set at no cost.
Other ways to Compress PDF
Prefer a different device, browser, or setup? Compress PDF works the same everywhere.
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