Processed on your device. Nothing is uploaded.
How to password-protect a PDF
- Drop one or more PDFs onto the page.
- Enter a password twice and choose whether readers may print, copy or edit.
- Click Protect and download the encrypted PDF.
Frequently asked questions
How strong is the encryption?
Files are encrypted with AES-256, the strongest option in the PDF standard and the one recommended by ISO 32000-2.
What if I forget the password?
There is no recovery. Keep the password somewhere safe; without it the file cannot be opened.
Is my password sent anywhere?
No. Encryption happens in your browser. Neither the file nor the password leaves your device.
Is it really free?
Yes. There is no account, no watermark, no file-size tier and no daily limit. Use it as often as you need.