Some might suggest you download an app to convert a picture to a PDF on the iPhone, but the truth is you can do it for free without any apps.

One of the easiest ways to read articles offline is to save them as a PDF, and thanks to a handy feature provided by Apple, it's effortless to do on your iPhone and iPad.

ReadAloud is a text to speech converter for your Windows Phone or Windows 8 device. The app supports conversion of web pages and .PDF files.