File Format Guide
What is a .PPTX file?
The PPTX format (short for Microsoft PowerPoint Open XML Presentation) is a presentation format that uses lossless compression, so every detail is preserved exactly with no loss of quality. Its text and formatting remain fully editable after you open it. PPTX is an open, royalty-free standard.
.PPTX at a glance
| Category | Document |
|---|---|
| Type | Presentation |
| Compression | Lossless |
| Open standard | Yes |
| Opens in web browsers | No |
| Typical file size | Medium |
How to open a .PPTX file
You can open PPTX files with PowerPoint, Google Slides, and Keynote. If a program on your device cannot read one, the quickest fix is to convert it to a more common format — no software install required.
PPTX pros and cons
Strengths
- fully editable slides, animations, and notes
- the standard for presentations
Limitations
- requires presentation software
- large with many embedded media
What .PPTX files are used for
- slide decks and pitches
- training material
- editable presentations
Need to convert a .PPTX file?
Convert PPTX to and from other formats free in your browser — no signup to start, no watermarks.
Open the PPTX Converter