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Compress PDF

Shrink a PDF for easier sharing. Best results on scanned documents and image-heavy files.

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Drop a PDF here, or click to browse

One file at a time.

Compressing...
✅
Your compressed PDF is ready

🔒 Files are processed locally — never uploaded anywhere.

How to compress a PDF online free

  1. Drop a PDF into the box above.
  2. Pick a compression level — Light, Recommended, or Strong.
  3. Click Compress PDF.
  4. Download the smaller file — compression happens on your device, not a server.

Frequently asked questions

How much smaller will my PDF get?

It depends on content — scanned or image-heavy PDFs shrink the most since pages are re-rendered as optimized JPEGs. Text-only PDFs may not shrink much.

Will compressing make my PDF blurry?

There's a quality tradeoff at higher compression levels, since pages become images — try "Light" first if quality matters more than size.

Is compression done on a server?

No — pages are rendered and re-encoded with pdf.js and pdf-lib directly in your browser tab.

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