How to Make a PDF Smaller

A PDF can be large because of embedded images, extra metadata, unused objects or scanned pages. This guide explains the safest first pass: optimize the PDF structure in the browser, check the new file size and use image compression first when the PDF is mostly large pictures.

Open Compress PDF

Steps

  1. Open the PDF compression tool and upload the PDF you want to shrink.
  2. Run the browser-based optimization pass.
  3. Compare the original file size with the optimized PDF size.
  4. Download the smaller PDF if the result is useful.
  5. If the PDF does not shrink much, compress the source images first or rebuild the PDF from smaller images.

Related tools

Compress PDF

FAQ

Why did my PDF not get much smaller?

Some PDFs are already optimized. Scanned or image-heavy PDFs usually need image recompression before the PDF itself can become much smaller.

Is this safe for contracts and forms?

Use a copy of the file and review the output before sending it. For signed or legally sensitive PDFs, avoid changing the final signed original.