Sometimes you need to lock PDF files from editing, copying, or printing. This post focuses on how to lock a PDF with PDF software, Word, and the Preview app.
![Extract Data from PDF in 3 Easy Ways [Step-by-Step Guides]](https://i.pinimg.com/originals/e2/3a/30/e23a3003337267a6712c8a09e5a75edd.png)
![How to Compress a PDF without Adobe Acrobat [Free Methods]](https://i.pinimg.com/originals/0e/20/01/0e2001ec559a056bfd53ada2edc9b8be.png)
