Mac users often look for PDF compression software, but you don't need to install anything. FreePDFNest works directly in Safari, Chrome, or Firefox on any Mac.
How to Compress on Mac
Step 1: Open your browser and go to FreePDFNest Compress PDF.
Step 2: Click "Choose PDF File" or drag your PDF from Finder into the upload area.
Step 3: Select your compression level — Low (best quality), Medium (balanced), or High (smallest file).
Step 4: Click "Compress PDF" and the smaller file downloads to your Mac.
Why Not Use Preview?
Mac's built-in Preview app has a "Reduce File Size" option under File → Export, but it applies aggressive compression with no control over quality. The result often looks noticeably worse. FreePDFNest gives you three compression levels so you can balance size against quality.
Typical Results
A 30MB PDF with photos typically compresses to 5-8MB at medium quality with no visible difference on screen. Text-heavy documents may only reduce by 20-30% since text is already compact.
Privacy
Your PDF is processed entirely in your browser — it never leaves your Mac. This makes FreePDFNest safer than cloud-based compressors that upload your files to remote servers.
Ready to try it?
Use our free Compress PDF tool — no signup required.