Compress a PDF
Is your PDF too heavy to email or upload to a form? Shrink it in seconds without losing readability.
Your files are processed directly in your browser. They are never uploaded to a server.
How to compress a PDF
- 1
Add the PDF you want to shrink.
- 2
Choose a compression level. “Recommended” gives the best balance.
- 3
Press “Compress PDF” and compare the original and final sizes.
- 4
Download the compressed PDF.
About this tool
In most PDFs, images are what take up space: photos, scans and graphics. This tool recompresses them and, when they're larger than needed, lowers their resolution.
Text, fonts and vector elements aren't touched, so the document stays sharp and its text remains selectable and searchable.
Everything happens in your browser. If the PDF is already optimized and can't get smaller, you get the original back.
Frequently asked questions
How much smaller will it get?
It depends on the document. PDFs with photos or scans often shrink by 40–80%. Text-only PDFs shrink less because they're already light.
Will the document look worse?
With “Recommended” the difference is hard to spot on screen. For detailed printing, choose “Light”.
Is my PDF uploaded to a server?
No. The PDF is compressed on your device and never sent anywhere.
Does it work with scanned PDFs?
Yes — that's where it shines: scans are usually heavy images that shrink a lot.