PDF files have the option to let you share and comment on documents in a wide range of applications. Adobe Acrobat Reader and other free PDF programs offer a subset of the capabilities of the paid ...

We have all dealt with PDF files at one point or another in our time on the internet or in the office. From tickets purchased online, to business documents from work, school, or government ...

To password protect a PDF in Adobe Acrobat Reader, you'll need the paid Pro version, which starts at $14.99 a month. You can password protect a PDF in Adobe Reader by ...