PDF files have become ubiquitous in our multi-platform world. This convenient file format makes it possible to view and share documents across various devices using various operating systems and ...

If you need to save a filled-out PDF form so the content is no longer editable, you can do so with Preview in OS X. Topher, an avid Mac user for the past 15 years, has been a contributing author to ...

When you want to share a document, saving it in Adobe’s portable document format almost always guarantees that the person on the other end will see what you intend. But how do you protect what you ...