📄 PDF Tools

Compress PDF Free

Reduce your PDF file size instantly. Choose your compression level. Browser-based — your file is never uploaded.

🔥 Most used tool — 14,320 times this month
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Frequently asked questions

How much will my PDF shrink?
Depends on content. Image-heavy PDFs compress 40–80%. Text-only PDFs see 5–20% reduction since text is already compact.
Is my PDF uploaded anywhere?
No. The file stays on your device. All processing happens in your browser using pdf-lib.
What is the difference between compression levels?
Low keeps full quality but smaller reduction. Medium is best for most use cases. High gives smallest file but may slightly reduce image sharpness.
Does this work on scanned PDFs?
Yes — but for scanned PDFs, server-side Ghostscript compression (coming soon) will give much better results.

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