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Common File Extensions

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.PDF File Extension

Run a free scan for .PDF file extension errors.

File Type Portable Document Format File
Category Page Layout Files
Common? Yes
File Description Cross-platform document created by Adobe Acrobat or a program with the Acrobat plug-in; commonly used for e-mail attachments or for saving publications in a standard format for viewing on mulitple computers; usually created from another document instead of from scratch.

May contain text, images, forms, annotations, outlines, and other data; preserves fonts and formatting electronically across multiple platforms; appears on the screen as it will when printed on paper. Google and other search engines now index PDF documents, which can be viewed in a Web browser using the free Adobe Reader plug-in.

Can also be created in Mac OS X by selecting "Print..." and choosing "Save as PDF" from the PDF drop-down menu instead of clicking "Print."

View the PDF definition for more information.
Program(s) that open pdf files
Mac OS Mac OS Adobe Reader to view (free)
Adobe Acrobat to edit (commercial)
Apple Preview
Roxio Toast
Windows Windows Adobe Reader to view (free)
Adobe Acrobat to edit (commercial)
Nuance PDF Converter
Nuance PaperPort
Brava! Reader
Foxit Reader or PDF Editor
Linux Linux Foxit Reader for Desktop Linux
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Updated 5/15/08
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