Apple Keynote Presentation
A KEY file is a presentation created with Apple Keynote, part of the iWork productivity suite. It stores slides with rich media, animations, and transitions in a proprietary package format.
This format is not currently supported for conversion in FileDex.
Common questions
What is a KEY file?
A KEY file is an Apple Keynote presentation containing slides, animations, and media assets in a proprietary iWork format.
Can I open KEY files on Windows?
You can view and edit KEY files using iCloud Keynote in a web browser, or convert them by uploading to iCloud and exporting as PPTX or PDF.
How do I convert KEY to PPTX?
Open the file in Keynote, choose File > Export To > PowerPoint, or upload it to iCloud.com and download as PPTX.
What makes .KEY special
Apple Keynote presentations use a package-based format that evolved from a flat XML structure (Keynote 1-5) to a compressed IWA (iWork Archive) binary format in Keynote 6 and later. The .key bundle contains protobuf-encoded data files, embedded images, audio, video, and metadata. Keynote is known for its cinematic transitions, precise object animations, and high-quality rendering that leverages Apple GPU acceleration. KEY files can be exported to PowerPoint, PDF, HTML, and video formats from within Keynote. iCloud-based Keynote for web allows cross-platform viewing and editing, though the full animation and effects library is only available in the native macOS and iOS applications.
Continue reading — full technical deep dive
Technical reference
- MIME Type
application/x-iwork-keynote-sffkey- Developer
- Apple Inc.
- Year Introduced
- 2003
- Open Standard
- No