Free Online Slides Editor
Build and edit PPTX presentations with an open-source alternative to PowerPoint. It runs in your browser: free, no sign-up, and your files are not uploaded. A free desktop app is also available.
Prefer an installed app? Download the free desktop app
- Open your browser developer tools and switch to the Network tab
- Open a file in the editor
- Your file never appears as an upload request
Best on a desktop browser. This editor has desktop menus and shortcuts.
Engine start screen, captured 2026-10-12
Formats it opens
What the engine's own documentation lists. Our own tests are in the compatibility table below.
| Format | Listed by the engine | Tested by us |
|---|---|---|
| .pptx | PPTX open and save; PDF export | Not tested yet |
What you can do
- Open and save PPTX files
- Edit text and shapes in place
- Use themes, color and font schemes
- Add notes, comments and sections
- Present from the editor
- Export slides, notes pages and handouts to PDF
Compatibility
tested 2026-10-12 · engine 0.5.0 · chromium 152 desktop · local server
| Check | Result | Notes |
|---|---|---|
| Editor starts | Works | Loaded with a sample presentation |
| Edit a title | Works | Double-clicking the title and typing changed the slide and its thumbnail |
| Open a .pptx file | Not tested yet | We have not run an open test for this format yet |
| Phone screen (390 px wide) | Partial | The thumbnail list shows, but the slide area is too small |
Known issues
- This is a large editor: the first start downloads about 28.4 MB before compression, so it can take a while on a slow connection. Your browser keeps it afterwards.
- The tests above ran on a local test server, before this site went live.
When to keep the original software
Keep using the desktop presentation software for decks with complex animations, embedded media, or live co-editing.
FAQ
Can I use it in my browser now?
Yes. Press Open editor on this page. The first start downloads about 28.4 MB, then your browser keeps it.
Does it open PPTX files?
Yes, PPTX is the file format it opens and saves. We have not published an open test for specific decks yet.
Are my slides uploaded?
Not by the editor. It is built to run on your own device.
Can it present full screen?
A full-screen slide show and presenter view are listed. We have not tested them yet.
Runs the open-source DeckCraft engine v0.5.0 (28.3 MiB) · MIT / Apache-2.0 · Last tested 2026-10-12 · source · license