How to use
- Select or drop a PDF.
- Pick a compression level.
- Download the smaller PDF.
Frequently asked questions
How much smaller will my PDF be?
It depends on the content — image-heavy PDFs shrink the most. Text-only PDFs are already small.
How does compression work?
Each page is re-rendered as a high-resolution image and re-encoded, which dramatically shrinks scanned and image-heavy PDFs. Pages become images, so text is no longer selectable in the output.
Are my files private?
Yes — compression runs in your browser, nothing is uploaded.
About this tool
Shrink large PDF files by down-sampling and re-compressing embedded images. Make PDFs small enough to email, without uploading them anywhere.