A PDF can include attachments like audio, fonts, images, text file, videos, etc. If you want to extract such files/attachments from a PDF, then this post can help you. Though you can use some PDF ...

You have the option to convert Google Docs into PDFs and either save them to your computer or send them as an email ...

Q: I'm part of a group of 80 people who every week receive an e-mail with an Adobe PDF file attachment. But when I receive the e-mail, the PDF has been converted to a Winmail.dat file that my e-mail ...

Given that it's from Google, it's not surprising that Gmail has a powerful search feature. But until now, if your email had a third-party attachment, say a PDF or Word doc, it couldn't index that text ...