Presentation Conversion
Convert PPT to PPSX Online — Free
Fast, free PPT to PPSX converter. No registration required.
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How to Convert
1
Upload your .ppt file by dragging it into the upload area or clicking to browse.
2
Choose your output settings. The default settings work great for most files.
3
Click Convert and download your .ppsx file when it's ready.
What is PPT?
PPT is the legacy PowerPoint format used before Office 2007. It remains common in archived presentations and older business environments.
Format Details
- Full Name
- Microsoft PowerPoint 97-2003
- Extension
- .ppt
Key Features
- Legacy support
- Wide compatibility
- Microsoft Office
- Presentations
What is PPSX?
PPSX is the modern PowerPoint slideshow format that opens directly in presentation mode. It uses the same Open XML structure as PPTX but starts the slideshow automatically.
Format Details
- Full Name
- PowerPoint Open XML Slideshow
- Extension
- .ppsx
Key Features
- Direct slideshow
- Open XML format
- Auto-play mode
- Modern PowerPoint
PPT vs PPSX
| Feature | PPT | PPSX |
|---|---|---|
| Full Name | Microsoft PowerPoint 97-2003 | PowerPoint Open XML Slideshow |
| Extension | .ppt | .ppsx |
| Best For | Legacy support | Direct slideshow |
Frequently Asked Questions
Yes. You can convert up to 5 files per day completely free, with no watermark or registration required.
Most files convert in under 30 seconds. Larger files (over 500MB) may take 1-3 minutes.
No. Our converter uses optimized encoding settings by default to preserve the original quality.
Free users can convert files up to 100MB. Pro users can convert files up to 2GB.
Yes. Our converter works in any modern web browser on any device.