How to keep your PDF file safe

PDF Secure tool makes it simple and powerful to protect your PDF files from unauthorized access, alteration or sharing. PDF Lock protects your files with a strong password so that no one else can open them. To add password protection simply send your PDF file to PDF Lock. A window will open allowing you to create a password. Advanced encryption options in PDF Lock help keep your files even more secure. Without the correct decoding key, encryption causes PDF content to become corrupted. These limitations will help you prevent harmful habits such as printing, altering and copying. The PDF Lock program protects your private documents from unauthorized access, alteration or distribution with an easy-to-use interface, strong encryption settings and a range of programmable limitations. Users can use a free demo version.