Live tool

Protect PDF

Require a password before your PDF opens. PDFit applies AES-256 encryption and returns the protected document directly.

AES-256 · NovaCore protected

Choose a PDF and password

Anonymous limit: one file, 10 MB, up to 150 pages.

Your password is used only for this request and is never stored in job history or analytics.
PDFit cannot recover a forgotten password—keep it somewhere safe.
The input and result are removed after delivery, with a cleanup fallback.