Compress PDF
Reduce PDF file size quickly and safely
Your file is processed locally — never uploaded anywhere.
Result
How to use
- Upload a PDF file.
- Click "Re-optimize PDF" — the file is rewritten using object streams for a smaller size.
- 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.