Compress PDF
Compress PDF files without uploading. Reduce file size by re-encoding pages — free, private, in your browser.
Compress a PDF privately in your browser
Shrink large PDFs for email limits or uploads without sending the file to a server. Choose quality and DPI, then download a smaller copy — processing stays on your device.
What you can do with it
- Fit a PDF under an email attachment limit
- Reduce a scan or export so it sends cleanly without an external cloud compressor.
- Prepare files for upload portals
- Many forms cap upload size — compress first, then submit the smaller PDF.
How to compress a PDF
- Open your PDF — it loads locally with no upload.
- Set quality and DPI (lower values shrink more).
- Download the compressed PDF.
Compress PDF for email limits without cloud upload
Attachment caps and form upload limits reject oversized scans. Re-encoding pages locally shrinks the file while the original stays on your device — important for tax returns, medical scans, and client proofs you would rather not upload to a compressor.
Quality vs size trade-offs
Lower quality and DPI yield smaller files but softer text on zoom. Start moderate for email; go lower for portals with hard MB caps. If text must stay crisp for OCR later, compress less aggressively or OCR first.
Related reading and tools
- Compress PDF without uploading — Guide to fitting PDFs under email and portal limits privately.
- Combine PDF — Merge first, then compress the combined packet.
- JPG to PDF — Build from photos, then compress if phone images are huge.