In many cases, when you want to send someone a PDF document, you can attach the file to an email just as you would any other type of file.

Use the iPad's built-in iBooks application to attach a PDF document to an email. To do this, your computer must have at least iTunes 10.1 installed and your iPad must have at least iOS 4.2 installed.

Attaching any file to an email But, what if you want to attach non-photo and non-video files to your Gmail message? This is where the Attachments [Gmail Attach] app comes in really handy.

Need to edit a PDF document but don’t want to pay for the more expensive Adobe editors? You can add text to and sign a PDF with just the free Reader program.

“Is there any way to password-protect and lock a sensitive PDF file before sending it as an attachment through email? I cannot afford Adobe Acrobat Pro and free primopdf didn’t work for me ...

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