Compress PDF

Reduce file size while keeping your documents looking great.

Add PDFs or drop them here

or click to browse

Files are processed locally: nothing is uploaded.

Compress PDF Files

Reduce PDF file size in your browser with simple compression options.

  • Files stay on your device.
  • Processed locally in your browser.
  • No uploads. No storage.

Compress PDF reduces the size of image-heavy documents with Light, Recommended, and Extreme presets. Multiple source PDFs can be processed in one session.

Light mode recompresses embedded images while preserving text and vector content. Recommended and Extreme may rebuild pages as images when ordinary image compression cannot achieve enough reduction.

What you can do

  • Choose a quality and file-size tradeoff for each batch.
  • Download one compressed PDF or a ZIP for multiple inputs.
  • Keep the original when compression cannot produce a smaller result.

Before you start

  • Actual savings vary with the document's existing compression and content.
  • Raster fallback can remove selectable text, links, forms, and other interactive PDF features.
  • Extreme compression intentionally introduces visible image-quality loss.

How it works

  1. Choose the PDF you want to compress.
  2. Select a compression level.
  3. Process locally and download the compressed PDF.

Common questions

Will compression results vary?

Yes. File-size reduction depends on the images and structure inside the PDF.

Are compressed PDFs stored by VaultPDF?

No. Generated files are downloaded by you and are not stored on VaultPDF servers.