Compress PDF

Reduce file size while keeping quality

Drop a PDF file here or click to browse

How to use this tool

Reduce a PDF before you send or upload it

Use compression when a PDF is too large for email, forms, or quick sharing. The tool runs in your browser, so it works best for practical file-size cleanup rather than perfect print production.

Best for

  • Email attachments over size limits
  • Upload forms with strict PDF limits
  • Archiving documents where perfect print quality is not required

Privacy and limits

  • Processing happens in your browser
  • Compression can reduce image quality
  • Very large files depend on device memory
Merge PDF Combine files first, then compress the final packet. Images to PDF Create a PDF from images before reducing file size. PDF toolkit Return to the full browser-based PDF toolset.

PDF tool FAQ

Will compression reduce quality?

It can. Compression usually lowers image detail or rewrites assets to reduce file size. Use a lighter setting if the document must stay sharp.

Why is my PDF still large after compression?

Some PDFs are already optimized or contain fonts, scans, and embedded assets that cannot shrink much without visible quality loss.

Is compression done locally?

Yes. The PDF is processed in your browser and is not uploaded to a server by this tool.