How to Compress a PDF (Reduce File Size for Email and Uploads)

Reduce PDF file size for faster uploads, easier sharing, and smaller storage. Learn what makes PDFs large and how to compress them in a browser-based flow.

Why your PDF is large

Most oversized PDFs are caused by high-resolution scanned images, embedded fonts, and unoptimized images inside the document.

Compression focuses on reducing image size and removing unnecessary data so the PDF is easier to share.

Scanned pages at high DPI
Large embedded images
Extra metadata and unused objects

How to compress a PDF

Open the Compress PDF tool, add your file, and export the compressed version. If you still need a smaller file, reduce image quality further (when available) or split the PDF into parts.

Upload the PDF
Compress
Download the smaller PDF

Best practice: merge then compress

If you are combining multiple PDFs, merge them first, then compress the final output. This avoids repeating work and keeps file naming simple.

Next steps

Try the recommended tools above, then explore more guides in the blog for worldwide-friendly workflows (fast, secure, and no signup required).

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