The file extension PDF,
or Adobe Portable
Document Format, is a
viewer that was created
by Adobe Systems, Inc.
File extension PDF files
are usually used for
viewing documents in a
viewer.
Programs such as Adobe
Acrobat Reader can read
file extension PDF
files. This extension is
for sharing documents
with other users even if
they don’t have the same
software that was used
to create the original
document. All original
formatting is kept in
the .PDF file making it
possible for users to
see the document as it
would normally appear in
the original
application.
For instance, if you
create a document in
Microsoft Word and save
it as a .PDF file, other
users can view the
document including all
of its formatting even
when they don’t have
Microsoft Word installed
on their computer. They
simply need to download
the free Adobe Reader
from the Internet.
File extension PDF is an
improvement over
previous types of image
viewing formats such as
PostScript. In fact, the
PDF file extension is
almost universally used
in businesses and
websites around the
world.
Many word processing
programs now come with
the built-in ability to
create documents with
the file extension PDF.
In the past, you needed
a special Adobe Acrobat
program in order to
create your own PDF
files. Now, you can save
your documents in PDF
format easily if you
have current word
processing software such
as Microsoft Word 2007.
For example, if you want
to create a PDF file in
Microsoft Word 2007, all
you need to do is go up
to the Office Button in
the upper left of your
screen and click it.
Scroll down to “Save As”
and then choose “PDF or
XPF” from the pop-up
list that appears.
Similarly, you can hit
the Control + S buttons,
name the file, and then
click the down arrow in
the “File Type” text
box. Choose PDF from the
list that appears.
Sometimes, the
computer's windows OS
doesn't know how to work
with .PDF files. When
this happens, clicking
on the file extension
PDF file in Windows
Explorer doesn't work.
This means that a file
association has been
lost. Your computer does
not know which
application it should
launch in order to view
your .PDF files.
File associations become
unlinked for numerous
reasons ranging from
file corruption,
unexpected shutdowns,
and power surges to
damage done by malicious
programs like spyware
and computer viruses.
You can re-establish
lost file associations
easily enough if you
want. Use Windows
Explorer to right-click
the file extension PDF
that you need to link
with an application.
Next, a small menu shows
itself. Click on "Open
with" from this menu.
Now, search through the
list of programs until
you find the desired
application.
See the check box down
below that says, "Always
use the selected program
to open this type of
file?" If you want this
particular program to
always open the file
extension PDF, place a
check mark in the box.
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