Password-protect a PDF
Add a password to a PDF so that only people who know it can open it. The PDF is encrypted with AES-256 on your device.
Your PDFs are processed in your browser and are never uploaded to a server. A password you enter is only used to open that file.
How it works
- Choose a PDF.
- Enter a password twice and decide what readers may do.
- Click “Protect PDF” and download the protected copy.
Good to know
- Bookmarks, form fields and links between pages are not carried over when pages are copied into a new PDF.
- Digital signatures become invalid as soon as a PDF is changed.
- The saved PDF is not password-protected, even if the original was.
- Very large PDFs (several hundred MB) can fail if your device runs out of memory.
Need to edit text or images?
These programs change the content of a PDF, not just its pages.
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