KEY to PPTX Converter
Convert a .key presentation file to .pptx, with slides, presenter notes and reviewer comments carried over, so it opens on any computer whether or not it has Keynote.
Document Converter
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Up to 95 MB each· 20 files at once· Removed after 30 min
Your files are removed from our servers 30 minutes after processing.
150 DPI turns an A4 page into about 1240 × 1754 px. Use 300 for printing.
Convert the whole file or only some pages or slides (PDF and presentation input).
Pages or slides to convert, e.g. 1-3, 5, 8-10.
UTF-8 works for every language. Choose UTF-8 with BOM if Excel or Notepad on Windows shows garbled characters; legacy encodings only for old software.
LF for macOS, Linux and code editors; CRLF for older Windows programs such as classic Notepad.
Comma is standard. Use semicolon for Excel in countries that write decimals with a comma (Germany, France, Brazil).
Excel input with several sheets: convert all of them (one section or file per sheet) or only the first.
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- .key
- Also called Keynote file · Keynote package
- The file format of Apple Keynote: a compressed package that holds slide data, images, media and preview pictures. Only Apple's apps read it natively, which is why it needs converting before PowerPoint, Google Slides or LibreOffice can open it.
Why a .key file is hard to open elsewhere
Keynote has existed since 2003, and its file format is Apple's own. Unlike PowerPoint's PPTX, which follows a published standard that any software maker can implement, the .key format is not designed for other programs to read. Windows, Linux and ChromeOS therefore treat a .key file as an unknown file, or show it as a ZIP archive full of unfamiliar parts.
The format has also changed over time. Older versions of Keynote saved a presentation as a folder that the Mac displayed as a single file; current versions save one compressed file. Both are .key files, and both have to be converted before any non-Apple software can show the slides.
Converting translates the package into PowerPoint's structure: one PPTX slide per Keynote slide, with its text boxes, images, shapes, tables, charts and notes rebuilt as PowerPoint objects.
From a .key package to a .pptx file
KEY
Keynote presentation
The native format of Apple's Keynote, released in 2003 for presentations on Mac and iPad. It stores slides, builds and transitions in an Apple package. PowerPoint and Windows cannot open it directly, so decks are typically exported to PPTX or PDF before sharing.
- Animation
- Vendor format
PPTX
PowerPoint presentation
PowerPoint's default format since 2007, based on Office Open XML. It holds slides with text, images, charts, transitions and animations, plus speaker notes. PowerPoint, Keynote, Google Slides and LibreOffice Impress can open it, with some effects rendered differently.
- Animation
- Open standard
Why convertHere the point is the file, not the app: a closed package format becomes an open, standardized one. Convert .key to .pptx so any computer, office suite or review workflow can read the slides, comments included.
Comments are the detail that sets this page apart. Presentations are often reviewed by several people before a talk, and their notes live in the file. With Include comments on, those comments arrive in PowerPoint's comment pane, so a reviewer on Windows can continue the conversation instead of starting over.
Presenter notes travel the same way, into the notes pane under each slide. Together they turn the converted file into a working copy rather than a picture of the deck: the next person can edit, comment and rehearse in the software they already use.
How to convert a .key file to .pptx
Upload the .key file
Drop the file on the box above, or press Choose Files. If the presentation is a folder on a Mac, compress it to a ZIP first.
Check the preset
PPTX with Keep all formatting and Include comments is preset, so review comments come along with the slides.
Convert and download
Press Convert and save the .pptx file. It opens in PowerPoint, Google Slides and LibreOffice Impress.
KEY to PPTX questions
What is actually inside a .key file?
A package of slide data, images, media and previews, stored in Apple's own format. Newer Keynote versions save it as a single compressed file; some older ones saved it as a folder that macOS displays as one file.
Why are comments included on this page?
A .key file passed around for review often carries comments from colleagues. With Include comments on, they are added to the PowerPoint file so the next reviewer sees them. Turn the option off for a clean copy.
Can I convert a .key file from an old Keynote version?
Yes. Files from Keynote '09 and from current versions are both accepted. Very old files may show simpler layouts, since some early effects have no PowerPoint equivalent.
Does a .key file open on a Chromebook or Linux?
Not directly; neither system has Keynote. Convert it to .pptx here, then open it in Google Slides on a Chromebook or LibreOffice Impress on Linux.
Why does my .key file show as a ZIP archive?
Because it is one: the format is a compressed package. Renaming it does not make it readable by PowerPoint, though. Upload the original .key file and convert it.
Will embedded audio and video still play?
Media files inside the package are carried into the PPTX. If a clip uses a format your PC cannot play, convert it separately with the Video Converter page and replace it on the slide.
The Keynote format at a glance
Keynote presentation file
- MIME type
- application/vnd.apple.keynote
- File extensions
- .key, .keynote
- Developed by
- Apple
- First released
- 2003
Because the format belongs to Apple, the most faithful export will always come from Keynote itself, using File → Export To → PowerPoint on a Mac, iPad or iPhone. The converter is the route when no Apple device is at hand, or when a batch of files has to be converted at once. Keynote to PowerPoint covers the Windows presenting case in more detail.
The same applies to file names: the PPTX keeps the name of the .key file, so a folder of converted decks stays easy to match with the originals.
Sending the deck back to a Mac user
Collaboration rarely stops after one conversion. If the original author wants your edits, send the .pptx back: Keynote opens PowerPoint files directly on Mac, iPad and iPhone and can save them as Keynote again. Your changes and comments come with it.
Expect some round-trip wear. Each pass between the two apps maps effects and fonts to the closest equivalent, so a deck that travels back and forth many times drifts slowly from its original look. Agree on one master copy and one app for the final polish, and use the other only for review.
For decks that only need comments rather than edits, a PDF review can be simpler still, since both sides can annotate the same fixed pages without changing the slides.
Checklist after converting
- Every slide is present and in the right order
- Titles fit their boxes after any font substitution
- Presenter notes appear under each slide
- Review comments sit on the right slides
- Embedded videos play on the presenting computer
- Charts show the right labels and colors
A quick pass through this list in PowerPoint's normal view takes a few minutes and catches nearly every problem before an audience does. Fonts are the most common one: a deck built with a Mac-only typeface falls back to a similar font on Windows, which can push a long title onto a second line.
You can convert up to 20 .key files in one batch, each up to 95 MB. Uploaded files are removed after processing and the PPTX files 30 minutes later. For a fixed copy that looks the same everywhere, save the result as PDF with the Convert to PDF tool; the Document Converter page handles the other office formats.
| Other ways to get PPTX | |
|---|---|
| Other ways to get HWP | |
| Other ways to get XLSX | |
| Other ways to get TEX | |
| Other KEY conversions | |
| Related conversions |
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