Compress PDF on Mac
Reduce PDF file size on Mac directly in the Safari browser.
How it works (3 quick steps)
- 1
Upload PDF
Select your PDF file - works with government forms, IDs, and any document.
- 2
Choose Compression
Select 'High' for 100KB or 'Extreme' for maximum compression.
- 3
Download Free
Get your compressed PDF instantly - no watermarks, no sign-up.
Why pick Convertify for this?
Files stay on device
Convertify processes everything in your browser using JavaScript. Your file is never uploaded — confirm with DevTools → Network. That makes this safe for sensitive material like contracts, IDs, and financial documents.
No upload wait
Because nothing uploads, processing starts the instant you click. For typical files (under 50 MB) the whole job finishes in seconds — no progress bar, no queueing behind other users.
No daily quota
Free without limits, including no "3 conversions per day" cap that competing services impose. Run as many compress pdf jobs as you need.
No watermark
Your output is clean — no Convertify branding, no metadata stamp. Same as if you'd run a paid desktop app.
Other ways people use Compress PDF
- •Compressing PDFs to 100KB for government form uploads
- •Reducing passport scans to 200KB for visa portals
- •Shrinking PDFs for email attachment limits
- •Making official documents smaller without quality loss
- •Optimizing scanned IDs for online applications
Related Compress PDF guides
Frequently asked questions
How do I compress a PDF on a Mac?⌄
Open Convertify in Safari or Chrome, upload your PDF, pick a compression level, and download the smaller file — no software required.
Is this better than Preview's "Reduce File Size"?⌄
Often yes. Preview's built-in filter can over-compress and blur images, while Convertify lets you choose the balance between size and quality.
Does it work on all Macs?⌄
Yes — MacBook Air, MacBook Pro, iMac, and Mac mini on any recent macOS version.
How much smaller will my PDF get?⌄
Scanned and image-heavy PDFs often shrink 70-90%; text-based files compress less but still drop noticeably.
Is it private?⌄
Yes. Compression runs locally on your Mac with no upload.