Lock PDF
Create a password-protected PDF copy in the browser by rebuilding pages into an encrypted PDF.
Why use this lock pdf?
Lock PDF creates a password-protected copy using browser PDF encryption.
Example
Protect a visual copy before sending it to a recipient.
Important note
Pages are rasterized during this workflow, so selectable text and vector quality are not preserved.
How to use it
Start with the inputs shown above, review the assumptions or options, then generate the result. Where the tool creates a file, keep the original until you have opened and checked the downloaded output.
Frequently asked questions
Is Lock PDF free?
Yes. The core tool is free to use without creating an account.
Do I need an account to use Lock PDF?
No. You can use the core Toolbox workflow without signing up.
Does Lock PDF work on mobile?
Yes. Toolbox is designed for modern mobile and desktop browsers, although complex file workflows can be easier on a larger screen.