Encrypt PDF
Password-protect a PDF with AES encryption. Free online — no sign-up, no watermark.
FreeNo sign-up
No watermark
Open Encrypt PDF
Password-protect a PDF before sending it — encrypt the file so only people with the password can open it.
Protect sensitive documents before you share them. These tools encrypt PDFs, remove restrictions, redact confidential text, scrub hidden metadata and validate signatures — with clear controls over what gets changed.
Accepts .pdf files. This tool runs entirely in your browser — your file never leaves your device.
How to use Encrypt PDF
- Upload your file — drag and drop it onto the page or click to browse.
- Adjust the tool's options if needed, then run it.
- Download the finished file straight to your device.
Frequently asked questions
- Is Encrypt PDF free to use?
- Yes — completely free, with no sign-up and no watermark on the output.
- Is my file safe?
- This tool runs entirely in your browser — your file never leaves your device.
- What files does Encrypt PDF accept?
- Accepts .pdf files.
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