Looks can be deceiving, so much so thatthe familiar icon could mask malware designed to steal your data and money.

To change the default PDF viewer on Windows 10, you'll need to edit your default apps in the Control Panel.

To search a PDF on your Mac for a specific word or phrase, you can use the search function in the built-in Preview app.

QR codes have been with us for a long time now, and after passing through their Gardenesque hype cycle of inappropriate usage, have now settled down to be an important and ubiquitous part of life. If ...