The quickest way to lock and protect the content of your PDF document from editing or copying.
You can use the Smallpdf Protect PDF tool to encrypt your PDFs with unbreakable passwords online—for free.
Creating a strong, secure, and memorable password isn't difficult. Follow our quick guide to get it done in a jiffy!
Use the Smallpdf encryption tool to protect your Word Documents with unbreakable passwords.
Securing a PDF with strong password protection has never been so easy, or cheap!
A smart and simple solution for locking your PDF files with an unhackable password. Protect your files with military-grade security.
You can use our Password Protect tool to protect your PDF file with a secure and nearly unbreakable password at no cost.
We’ve written a few articles to guide you on how to best password protect your PDF documents. For other file formats, you can always convert them to PDF format, so that you can utilize this tool to encrypt it.