Compress PDF
Shrink your PDF so it fits email attachment limits and uploads faster. Choose the balance between size and quality.
How to compress a PDF
- Add your PDF file above.
- Pick a compression level — Balanced works well for most documents.
- Click Compress PDF and download the smaller file.
How does it work?
The tool re-renders each page and re-encodes it with optimized JPEG compression, directly on your device. Scanned documents and image-heavy PDFs shrink the most — often by 60–90%. Note that because pages are re-rendered as images, text in the output can no longer be selected or searched; if you need selectable text, keep a copy of the original.
Frequently asked questions
How much smaller will my PDF get?
It depends on the content. Scanned pages and photos compress dramatically; PDFs that are already highly optimized may shrink less. If the result would be larger than the original, the tool tells you so you can keep the original.
Is the compressed PDF watermarked?
No. The output is clean, with no watermarks or branding of any kind.
Is my document uploaded to a server?
No — compression runs entirely in your browser. Your file never leaves your device.