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KEY09 File

This page contains information on the KEY09 file extension (Apple iWork '09 Keynote spreadsheet document), a popular document file format

File extension.key09
CategoryDocument File
DescriptionFiles with a .key09 file extension are presentation documents which are generated by Apple's "Keynote" application in versions 5.0, 5.1, 5.2 and 5.3 (these versions of the software were released between 2009-2012).

This is distinct from the key file produced by more modern versions of iWork.

Keynote is one of 3 programs which make up Apple's iWork office suite, a set of applications which run on the Mac OS X and iOS operating systems, also including Numbers (for spreadsheets) and Pages (for word processing).

Keynote was first released by Apple in January 2003 and began life as a program used by Steve Jobs when creating presentations for the MacWorld Conference and Expo.

Actions View other document file formats
Technical DetailsOfficial file format specifications for iWork '09 Keynote files are not published by Apple but there have been attempts by some developers to reverse engineer them. At the top level iWork '09 Keynote files represent a zip file containing:
  1. An index.xml file
  2. A buildVersionHistory file
  3. A "QuickLook" directory with a "Thumbnail.jpg" of the document. The directory may also contain a PDF file named "Preview.pdf" if the user chose to save the original document with additional preview information in Keynote.
The index.xml is the core component of the file, containing the document content and all of the metadata for formatting it. This XML is not standards-based as Keynote does not support the OpenDocument file format used by Microsoft.

Files created by Keynote in iWork '09 are not backwards compatibile with earlier versions of iWork. Keynote files cannot be opened by programs other than iWork.

Associated programs Keynote 5.0
Keynote 5.1
Keynote 5.2
Keynote 5.3
iWork '09
Developed by Apple Inc
MIME type  application/x-iwork-keynote-sffkey
application/vnd.apple.keynote
Useful links Working with iWork Keynote 09 files
Keynote details on Wikipedia
Information on iWork Keynote mime formats
More information from Apple on iWork
 

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