Guide · Protect PDF
Encrypt a confidential PDF
Password protection on a PDF relies on encryption: without the password, the content can't be read. Modern PDF encryption (AES-256) is strong, provided the password is too. PDFly's Protect PDF tool is in development and will be free.
In development
Coming soon — and free
This tool is in development. Like every PDFly tool, it will be free, with fair-use limits: files up to 50 MB and 20 operations per day, processed on our servers in the EU.
Get notified at launch