CompressKaro
All tools

Protect PDF

Add password encryption

100% freeProcessed in your browserNo signupNo file limits

Drop your file here

or tap to browse · PDF files

FAQs

What encryption is used?

Standard PDF encryption — the file requires the password to open in any PDF viewer.

What if I forget the password?

There is no recovery — that’s the point of encryption. Store the password somewhere safe.

Does my password get sent anywhere?

Never. The encryption runs entirely in your browser; we never see the file or the password.