Compress a PDF

Shrink a PDF's file size for easier sharing. Everything runs on your device: your file is never sent to a server.

This works by re-rendering each page as a compressed image. It's great for scanned documents and photo-heavy PDFs, but the text will no longer be selectable or searchable afterward. For text-based PDFs you want to keep searchable, this isn't the right tool.

Drag your PDF file here

or choose from your computer

How it works

Each page is rendered with pdf.js at a resolution tied to your chosen level, then re-encoded as a JPEG and rebuilt into a new PDF with pdf-lib, at the same page size as the original.
This is a real tradeoff, not free compression: lower levels mean a smaller file but blurrier text and images. Try "Balanced" first.
Nothing is uploaded. Compression happens entirely in this browser tab.