🔒 Runs on your device
Compress PDF
Make a PDF smaller: lossless clean-up, or strong compression for scanned pages.
Open Paper to compress PDF →Your file never leaves your device: Paper does this in your browser, and its security policy stops the page from sending data to any other site.
How to compress PDF
- Open the PDF.
- Click Export and choose Lossless or Strong.
- Save and compare the size.
Questions
Is it free?
Yes, free and open source, with no sign-up and no watermark.
Which setting should I use?
Lossless keeps everything identical. Strong re-encodes scanned pages as JPEG and can shrink scans a lot.