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Compress PDF

Shrink your PDF in one tap. Pick a quality preset or target an exact file size.

Private In your browser No upload

Frequently Asked Questions

We re-stream the PDF with optimized object streams (lossless) and, when needed, rasterize pages to JPEG at adaptive quality. Everything happens in your browser using pdf-lib, pdf.js and jsPDF.

How to compress a PDF online

Drop your PDF, pick a preset or a target KB, and hit Compress. Everything happens directly inside your browser — your file never leaves your device.

Choosing the right option

Best Quality is lossless. Balanced rasterizes at JPEG 65% — a great default. Smallest File uses JPEG 40% for tiny outputs. Target size binary-searches quality to land within ±5% of your KB.

Why compress a PDF?

Email attachments, government and university upload portals, mobile data savings, faster website downloads. A 50 MB scanned document can frequently drop below 1 MB with no loss of legibility.

Need a specific number? Try: Compress to 100KB, 500KB, or 1MB.