Convert PowerPoint to PPT
Ethical Tube's free PowerPoint to PPT converter turns PowerPoint presentations into PPT, the legacy PowerPoint format, using LibreOffice, the open-source office suite. It runs entirely in your browser, so your presentations are never uploaded, and it's free with no sign-up or watermark. The first conversion downloads the LibreOffice engine (77 MB) once, and it's cached after that.
Files are converted on your device and never uploaded.
- Price
- Free
- Uploads
- None, it runs on your device
- Sign-up
- Not needed
- Batch
- Unlimited files
- Output
- PPT
- First use
- 77 MB download, once
How it works
How to convert PowerPoint to PPT
Add your PowerPoint files
Drop PowerPoint files onto the converter, click to choose them, or paste from the clipboard. Add as many as you like.
Check the settings
PPT is already selected. The first time, confirm the one-time download of the document engine.
Download your PPT presentations
Each file gets its own download button as soon as it's ready. Download all saves everything in one ZIP file.
The formats
PowerPoint and PPT at a glance
What is a PowerPoint file?
PPTX is the presentation format PowerPoint has used since 2007. It holds slides with text, images, charts, animations, transitions, and speaker notes. It opens in Microsoft PowerPoint, Google Slides, Apple Keynote, LibreOffice Impress, and WPS Office.
What is a PPT file?
PPT is the binary presentation format PowerPoint used before 2007. It still opens in most presentation apps, but files are larger than PPTX and some newer features, like modern charts and transitions, aren't supported. It opens in Microsoft PowerPoint, LibreOffice Impress, Google Slides, Apple Keynote, and WPS Office.
Good to know
What changes when you convert PowerPoint to PPT
- Text, formatting, tables, and images carry over to PPT.
- PPT is a legacy format, so features newer than Office 2003 may be simplified.
- Some animations and transitions may change.
- The first conversion downloads LibreOffice compiled to WebAssembly (77 MB). It's cached, so later visits start quickly.
- Chinese, Japanese, and Korean text may appear in a fallback font.
- Password-protected documents can't be converted.
- It works best on a computer, because LibreOffice needs a lot of memory.
FAQ
Questions, answered
Is this PowerPoint to PPT converter free?
Yes. It's completely free, with no sign-up, no watermark, and no limit on how many files you convert. It costs Ethical Tube nothing to run, because the conversion happens on your own device rather than on a server.
Are my files uploaded anywhere?
No. The conversion runs inside your browser with LibreOffice compiled to WebAssembly, so your files never leave your device. Once the page and the engine have loaded, it even works offline.
Why is there a download the first time?
The conversion uses LibreOffice, the open-source office suite, compiled to run inside your browser. It's about 77 MB, downloads once from Ethical Tube's own server, and is cached for next time. Your documents are never uploaded.
Can I convert several PowerPoint files at once?
Yes. Add as many as you like. They're converted one after another, and you can download each PPT file as soon as it's ready or all of them in one ZIP file.
Does it work on iPhone, Android, Mac, and Windows?
It works in Chrome, Edge, Firefox, and Safari, but it's built for computers. LibreOffice needs about 1 GB of memory, which many phones can't spare.
What can open a PPT file?
Microsoft PowerPoint, LibreOffice Impress, Google Slides, Apple Keynote, and WPS Office.
Is there a file size limit?
There's no upload limit because nothing is uploaded. The practical limit is your device's memory: everyday files are fine, and most computers handle documents with hundreds of pages.
Keep converting
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