Protect a PDF with a password and AES encryption, no upload
Set an open password and permissions (printing, copying, editing) with AES encryption applied in your browser. The document and the password never leave your computer.
✓ no upload✓ no account✓ free
The document is processed in your browser and is never sent anywhere.
How it works
The file is rewritten with AES encryption, using the password you typed, inside the browser. Neither the document nor the password is transmitted.
- 01Select the file
Drag the PDF into the tool area or click to choose it. It stays in your browser's memory only.
- 02Local processing
The PDF engine runs on your computer, in JavaScript and WebAssembly. Nothing is sent; you can watch the Network tab.
- 03Download the result
The finished file is saved straight from the browser to your disk. Close the tab and no copy remains anywhere.
Frequently asked questions
What kind of protection is applied?
AES encryption from the PDF standard itself, with an open password and, optionally, a permissions password for printing, copying and editing.
If I lose the password, can you recover it?
No. Neither the file nor the password passes through us. Keep the password safe.
Does the protection work in any reader?
Yes. It is the PDF format's standard protection, recognised by common readers.