You can only upload a PDF to Facebook groups and business pages, unless you convert the PDF to an image file.

It's easy to download a PDF document on an iPhone and save it to an app like Apple Books or iCloud Files. Here's how to do it.

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

The files with AI extension represent the vector images created in Adobe Illustrator software. Graphics designers use Adobe Illustrator to create different types of images, like banners, logos, ...