Skip to main content

Compress PDF guide

How to reduce the size of a scanned PDF

Compress scanned or photo-heavy pages where image quality can be traded carefully for a smaller document.

Updated September 2026 · PDFKaka EditorialOpen Compress PDF
Capture the Compress PDF workspace at 1366×768 with synthetic sample content and the controls used by this workflow visible.

Compress the PDF

  1. Compress scanned or photo-heavy pages where image quality can be traded carefully for a smaller document.
  2. Choose one PDF and start with Recommended compression.
  3. Compare the estimated or completed size with the original before choosing a stronger mode.
  4. Verify that page images remain readable and remember that searchable text, links, forms, and signatures are not preserved by raster rebuilding.

What stronger compression can change

Recommended mode may find no useful reduction. Strong and Maximum rasterize pages and can remove text, links, forms, accessibility data, annotations, and signature validity.

FAQ

Can stronger compression remove searchable or interactive PDF features?

Yes. Stronger modes can rasterize pages, which may remove searchable text, links, forms, accessibility information, annotations, and signature validity.

What is the current input limit for Compress PDF?

PDF; One PDF ≤50 MiB, ≤100 pages.

What does Compress PDF create?

recommended keeps structure where possible; stronger modes render pages as images and can lose text/features; One PDF ≤150 MiB.

Open Compress PDF→