The *.doc or *.docx format is a file
format used for storing documents,
primarily associated with Microsoft
Word, a popular word processing program.
It is part of the Microsoft Office suite
and has been the default format for Word
documents since Word 2007.
PDF, which stands for Portable Document
Format, is a file format created by
Adobe Systems in the early 1990s. It is
a widely used and versatile file format
for documents, designed to present and
exchange documents reliably, regardless
of the software, hardware, or operating
systems used by both the creator and the
recipient. It features platform
independence, consistent formatting,
security, interactive elements,
compression, annotations and comments,
digital signatures, accessibility,
printability, archival format.
The web app can convert Microsoft Office
Word 5,6.0,95,97,2007 Open XML Text's doc/docx
format to pdf online.