Open PowerPoint files without PowerPoint
A deck arrived as .pptx and you just need to look through it — or fix one typo before it goes out. Omia opens PowerPoint files on Mac or Windows, without Office and without uploading them.
Free to view · 5 free saves, conversions & pro-format opens · then $19.90 one-time · no subscription · files never leave your computer
What you can do
- Open .pptx decks and flip through the slides
- Edit slide text and save back
- Old .ppt files open on a best-effort basis
- Works offline — your deck is never uploaded
- Works on Mac (Apple Silicon and Intel) and Windows 10/11
What it doesn't do
We'd rather you know before downloading.
- Text edits only: you can't move shapes, change layouts, add slides or images
- No conversion to PDF or other formats for PowerPoint yet — Save As makes a copy
- Old .ppt files may not look exactly like they do in PowerPoint
- It isn't a presentation editor — for building decks you still need PowerPoint, Keynote or Google Slides
How to open PowerPoint files
- Download Omia and install it (Mac or Windows)
- Double-click the .pptx, or drag it onto the Omia window
- Scroll through the slides; edit text and click Save if needed
Why a local viewer
Uploading a pitch deck to a web viewer just to read it is a bad trade. Omia opens it locally, and a typo fix doesn't mean installing Office.
FAQ
How can I open a .pptx without PowerPoint?
Install Omia (Mac or Windows) and double-click the file. The slides open right away.
Can I edit the slides?
You can change the text on slides and save. Layout, images and slide order stay as they are.
Can I convert PPTX to PDF?
Not yet. Save As only makes a copy of a PowerPoint file.
Is it free?
Viewing files is free forever, with no sign-up. Saving edits, converting, and opening pro formats (DWG, STEP, SketchUp, CorelDRAW) each come with 5 free uses; after that it's a one-time $19.90 licence, no subscription.
Are my files uploaded?
No. Omia opens and converts files on your own computer. Nothing is sent to a server or an AI service.
Omia also opens: Word · Excel · PDF · 150+ formats in one app