Compress PDF

Reduce PDF file size quickly and safely

Your file is processed locally — never uploaded anywhere.

How to use

  1. Upload a PDF file.
  2. Click "Re-optimize PDF" — the file is rewritten using object streams for a smaller size.
  3. Compare before/after sizes and download the optimized PDF.

Honest note: this tool performs a "Re-optimize (object streams)" pass — it restructures the PDF's internal data. Most PDFs shrink a little; scanned or image-heavy PDFs may shrink very little. We don't promise dramatic compression.

Privacy note: everything runs in your browser. Your files never leave your device.