Convert PPTX to ODP online in seconds — free, with no sign-up. ODP is lossless and ideal for open-source presentations. Your files are encrypted and deleted automatically after 24 hours.
PPTX
Microsoft PowerPoint — PowerPoint's format storing slides, animations and embedded media.
ODP
OpenDocument Presentation — The open-standard presentation format used by LibreOffice.
How to convert PPTX to ODP
- 1Upload your PPTX file
Click “Choose a file” or drag and drop your PPTX file onto the page — no sign-up or email needed.
- 2Convert to ODP
ODP is already selected as the output. Open Options to fine-tune quality if you like, then click Convert.
- 3Download your ODP file
Your ODP file is ready in seconds — click Download to save it. Files are automatically deleted after 24 hours.
PPTX vs ODP
| PPTX | ODP | |
|---|---|---|
| Full name | Microsoft PowerPoint | OpenDocument Presentation |
| Type | Presentation | Presentation |
| Compression | Lossless | Lossless |
| Best for | editable presentations | open-source presentations |
Frequently asked questions
Does converting PPTX to ODP lose quality?
Converting PPTX to ODP preserves your text, images and most formatting. Very complex elements — macros, live formulas or unusual fonts — may not carry over perfectly, but the content stays intact.
What's the difference between PPTX and ODP?
Microsoft PowerPoint (PPTX) is lossless and best for editable presentations. OpenDocument Presentation (ODP) is lossless and best for open-source presentations. Convert PPTX to ODP when you need a presentation for open-source presentations.
Is the PPTX to ODP converter free?
Yes — converting PPTX to ODP is completely free. There's no watermark, no sign-up and no email required, and you can convert as many files as you like.
Are my PPTX files private and secure?
Yes. Your uploads are encrypted in transit, processed privately, and automatically deleted within 24 hours. We never share, sell or look at your files.
Can I convert PPTX to ODP on iPhone, Android, Mac or Windows?
Yes. The converter runs entirely in your browser, so it works on any device — iPhone, iPad, Android, Mac, Windows or Linux — with nothing to download or install.
How long does it take to convert PPTX to ODP?
Most files convert in a few seconds. Larger files take a little longer, and your upload speed is usually the limiting factor. There's no queue and no waiting for an email.
What else can I convert PPTX files to?
Besides ODP, you can convert PPTX to PDF and more — see the full list of PPTX conversions below.
Other conversions
Browse all presentation converters →
Last updated July 2026