Compress PDF

Preserve PDF structure or selectively raster-compress pages with a live quality sample.

Workspace

Source PDF

Choose what to preserve

Drop a PDF here or choose a file

Up to 50 MB and 100 pages · processed

Structure-preserving mode: formatting is not intentionally flattened.
Guide

How to use

  1. Choose a PDF and decide whether to preserve digital document features or rasterize pages for stronger image compression.
  2. For raster compression, choose all or selected pages, compare the live quality sample, and adjust resolution, JPEG quality, or grayscale.
  3. Run compression, review exact before-and-after size and preservation details, then download or try different settings.
Help

Frequently asked questions

Which compression mode should I use?

Use Preserve text and links for digital documents where selection, links, forms, annotations, or accessibility matter. Use Raster image compression for scans and image-heavy PDFs where smaller size matters more than interactive content.

Can I compress only scanned pages?

Yes. Choose Only selected pages and enter page numbers or ranges. Selected pages are flattened into JPEG images; other pages are copied without intentional rasterization.

Will every PDF become smaller?

No. Already optimized files, text-only documents, and high-resolution settings can produce a larger result. The result is retained temporarily and shows the comparison before you decide to download.

Is the quality sample the full-resolution output?

No. It is a reduced-size preview for comparing JPEG artifacts and grayscale appearance. The final PDF uses your selected DPI, subject to safe browser canvas limits.