PDF Compressor
Make scanned and image-heavy PDFs dramatically smaller.
Drop your file here or browse
PDF · up to 50 MB · max 300 pages
How this PDF compressor works
Each page of your PDF is re-rendered at a lower resolution and re-encoded as an optimized image, then the document is rebuilt. For scanned documents, photographed receipts and image-heavy reports this routinely cuts file size by 50–90%. Because pages become images, text can no longer be selected or searched in the compressed file — keep your original if you need that.
How to compress a PDF
- 1Drop your PDF into the box above (up to 50 MB, 300 pages).
- 2Pick a compression level — Recommended balances size and readability.
- 3Click Compress PDF and watch the page-by-page progress.
- 4Check the before/after size and download the result.
Limits and tips
Files up to 50 MB and 300 pages are supported. Password-protected PDFs must be unlocked first. If the result isn't smaller, your PDF is already well optimized — this happens with text-only PDFs produced by word processors, which are tiny to begin with.
Frequently asked questions
›Is my PDF uploaded to a server?
No — unusually for a PDF compressor, this one runs entirely in your browser. Your document never leaves your device, which matters for contracts, IDs and financial paperwork.
›Why can't I select text in the compressed PDF?
Compression re-encodes each page as an image, which is what makes scanned PDFs so much smaller. The visual content is identical, but the text layer is gone. Keep the original if you need selectable text.
›Which compression level should I pick?
Recommended (144 DPI) reads perfectly on screens and prints acceptably. Use Maximum for email attachment limits, and High quality when the PDF will be printed.
›My PDF got bigger — why?
Text-only PDFs generated by Word or LaTeX are already extremely compact; rendering their pages as images adds data instead of removing it. This tool shines on scanned and image-heavy documents.