Compress PDF
Compress PDF reduces the size of your PDF files by re-encoding their pages, so they are easier to share, email and upload. It is free to use, needs no login, and runs entirely in your browser — your files are never uploaded anywhere.
Key features
- Reduces PDF size by re-encoding pages.
- Smaller PDFs are easier to share, email and upload.
- Runs fully in your browser — your files stay on your device.
- Free to use, with no login or signup required.
How to use
- Open Compress PDF using the button above.
- Attach the PDF you want to shrink.
- Compress the PDF.
- Download the smaller PDF to your device.
Frequently asked questions
Is Compress PDF free?
Yes. It is completely free to use and you do not need to create an account or sign in.
Are my PDFs uploaded anywhere?
No. The tool runs in your browser, so your files are processed locally on your own device and are not uploaded to or stored by the site.
How much smaller will my PDF get?
It depends on the PDF — image-heavy PDFs usually shrink the most, while PDFs that are mostly text shrink less.