KEY Converter
Convert files to and from KEY online for free. Fast, secure, and high-quality file conversion with no sign-up or software required.
Maximum file size is 1GB
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Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.
Convert & download
Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.
What is a KEY file?
A KEY file is a presentation document created by Apple Keynote, part of the iWork productivity suite. Technically, the format has evolved through two primary iterations: a package directory (bundle) containing XML data and media assets (Keynote '09), and a single-file Zipped archive using Protocol Buffers (Protobuf) for efficient serialization (Keynote 2013 onwards). It utilizes a proprietary schema to store slide geometry, animations, and media, distinct from the Office Open XML standard.
How to open a KEY file
Native access is exclusive to macOS, iOS, and iPadOS devices via the Apple Keynote application. Users on Windows or Linux can view and edit these files via iCloud Keynote in a web browser. Conversion to PDF or PPTX is often required for offline viewing on non-Apple systems. LibreOffice offers limited import capabilities for older version 09 files but struggles with modern Protobuf-based KEY files.
KEY Technical Info
- Full Name
- Keynote Presentation
- Developed By
- Apple Inc.
- Initial Release
- 2003
- MIME Type
- application/x-iwork-keynote-sffkey
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