Sign & protect
Encrypt PDF
Lock the file with a password, and ask readers’ apps to limit printing or copying.
Also called: password protect PDF, lock PDF
Drop a PDF hereStart with a PDFOpen your PDFDrop to open
It opens in this tab with the tool started. No account, nothing to install.
Without an account, your PDF never leaves your device. How?
How to encrypt a PDF
Choose a PDF, or drop it on this page.
It opens in this tab with Password & permissions up.
Type a password twice and choose what readers’ apps are asked to allow, then download the locked PDF.
Questions
Is it free to encrypt a PDF?
Yes. It’s free and needs no account. It runs in your web browser, with nothing to install.
Is my PDF uploaded?
No, not without an account. Your PDF is opened and worked on in this browser tab, and never sent to our server.
Is there a file size limit?
Not as a guest. Your file never reaches our server, so there’s no file-size or usage quota. With a free account, each PDF kept in your library can be up to 100 MB.
Can I encrypt a PDF on my phone?
Yes. It works in the web browser on a phone, a tablet or a computer.
See the limits of a free account, and what stays on your device.