KEY vs POTM — Comparison & Free Converter
Fast, instant KEY (KEYNOTE) to POTM conversion. No signup required. Just drop your .key file and get .potm in seconds.
Batch Settings
About KEY (KEYNOTE) to POTM Conversion
KEY or POTM — which format should you use? The answer depends on your needs. Here's a quick breakdown.
KEY is a widely used file format. It has common platform support. POTM is a widely used file format. It has common platform support.
So when should you convert KEY to POTM? This conversion is ideal when you When you need a POTM file. This conversion helps you convert between formats quickly.
Converting KEY to POTM maintains high quality with CocoConvert's optimised encoder settings.
If you've decided POTM is the right choice, CocoConvert makes the conversion effortless. Upload your .key file, pick POTM, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert KEY (KEYNOTE) to POTM
- 1
Choose your KEY file
Upload your .key file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to POTM
Select .potm from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large presentation files.
- 4
Get your POTM file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert KEY (KEYNOTE) to POTM
Your KEY file is decoded and re-encoded as POTM.
Your KEY file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in POTM format
The converted file is ready for download
Format Comparison
KEY (Keynote)
.key file
| Extension | .key |
| MIME Type | application/x-iwork-keynote-sffkey |
| Category | Presentation |
POTM
.potm file
| Extension | .potm |
| MIME Type | application/vnd.ms-powerpoint.template.macroEnabled.12 |
| Category | Presentation |
Should You Convert KEY (KEYNOTE) to POTM?
When to Convert
- ✓When you need a POTM file
Frequently Asked Questions
Should I use KEY or POTM?
It depends on your goal. KEY preserves full quality. POTM preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is POTM higher quality than KEY?
Not necessarily. Converting KEY to POTM maintains high quality with CocoConvert's optimised encoder settings. Quality depends on the compression type and settings, not just the format name.
Can I convert KEY to POTM on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for KEY to POTM?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for KEY to POTM?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.