Compress PDF
Reduce PDF file size so it fits email and upload limits, right in your browser.
🔒 Processed entirely on your device — your file is never uploaded.
How to compress pdf
- Drop a PDF onto the box, or click to browse.
- Pick a compression level — Strong for the smallest file, Light to keep the most quality.
- Click Compress PDF. You'll see the before and after size when it's done.
Compress PDF — private and free
"Your file is too large" is one of the most frustrating messages online — email attachments, government forms, and upload portals all cap file size. SafePDF shrinks your PDF right in the browser so you can get under those limits without sending your document to a stranger's server.
Compression works by re-rendering each page as an optimised image, which is why it dramatically shrinks scanned documents and photo-heavy PDFs. A text-only PDF is already small, so it may not shrink much — that's expected. If the first result isn't small enough, try a stronger level.
FAQ
Why didn't my PDF get smaller?
Text-only PDFs are already compact. This tool shrinks scanned and image-heavy PDFs the most. Try the 'Strong' level for a bigger reduction.
Will compression reduce quality?
Stronger compression lowers image sharpness slightly. 'Recommended' balances size and clarity; 'Light' keeps the most detail.
Are my files uploaded?
No. Compression runs entirely on your device.