.KEY

Introduction

A .key file is a presentation from Apple Keynote, which Apple released in 2003 and later made part of its iWork suite. Apple has never published the format, so presentations are usually exported to PPTX or PDF to share them with people who do not use Keynote.

The extension .key is also widely used for cryptographic key files.

Structure

Since the 2013 versions of iWork, a Keynote presentation is a ZIP archive (or a macOS package folder) holding an Index folder of .iwa files, a Data folder of pictures, movies and sounds, a Metadata folder and preview images, the same layout as Apple Pages and Numbers documents. IWA files hold Protocol Buffers messages compressed with a variant of Snappy framing. Versions before 2013 stored the presentation as XML.

Also used for

• PEM private key .key

Links