Taking photos of documents with your phone is an incredibly convenient thing to do. But you know what would be better? Being able to convert those photos into PDFs, recognise the letters on the page, ...

There are some tasks that will never be suitable for a smartphone—serious video editing and serious spreadsheeting, for example—but there’s plenty that you can do on these pocket devices, and that ...

To properly sign a PDF on your Android phone or tablet, you'll need to download an app from the Google Play Store.

You can edit a PDF on your Mac with Preview, an app that's built-in to your computer from the start. You can use this program ...