Three steps. That's it.
Add audio to your PowerPoint in three easy steps.
Upload Files
Upload your .pptx presentation and your audio file (MP3, WAV, M4A, or OGG). Drag & drop or click to browse.
Embed Audio
Our tool embeds the audio on slide 1, configured to auto-play across all slides. Your design, animations, and formatting stay intact.
Download
Your PowerPoint with embedded audio is ready in seconds. One click to download.
Built for convenience, speed & quality
See how SlideSpeak handles every aspect of adding audio to your presentation.
Plays Across All Slides
Your audio is embedded on slide 1 and configured to auto-play across the entire presentation. Perfect for background music, voiceovers, or narration that accompanies every slide.
FREE & No Sign-up Required
Our audio embedder is 100% free with no account required. Upload your files and download the result instantly. No watermarks, no limits.
Secure Online Processing
Every file you upload is encrypted in transit and automatically deleted after processing. Your presentations and audio files are never shared or stored.
Why choose SlideSpeak?
Fast, free, and reliable. Add audio to any PowerPoint presentation in seconds.
Multiple Audio Formats
Supports MP3, WAV, M4A, and OGG audio formats. Upload any common audio file and it will be embedded seamlessly.
Preserves Your Design
Your presentation's design, animations, and formatting remain completely intact. Only the audio is added.
Lightning Fast
Audio embedding takes just a few seconds, even for large presentations with many slides.
Auto-Play Across Slides
Audio is configured to start automatically and play continuously across all slides during your presentation.
Secure and Private
Files are encrypted in transit and permanently deleted after processing. Your data stays private.
No Software Needed
Works entirely in your browser. No Microsoft PowerPoint or any other software required.
Fast processing, any file size
Most files process in under 10 seconds. Our server-side engine embeds audio directly into the PPTX package format.
<10s
Avg. time
4+
Audio formats
200 MB
Max PPTX size
100%
Free forever
How We Stack Up
See how SlideSpeak compares to other ways to add audio to PowerPoint.
| Features |  | PowerPoint (Desktop) | Google Slides | Canva |
|---|---|---|---|---|
| Free to use | Unlimited free | Paid license | Free | Free (limited) |
| No signup required | No signup | License needed | Google account | Account needed |
| Online (browser-based) | Yes | Desktop only | Yes | Yes |
| Plays across all slides | Automatic | Manual setup | Per-slide only | Per-slide only |
| Supports MP3, WAV, M4A | All supported | Most formats | MP3 + WAV only | All supported |
| Preserves PPTX formatting | 100% preserved | Native | Conversion needed | Re-export needed |
Explore related tools
All free, all browser-based. No signup needed.
AI Audio Narration Generator
Generate professional AI audio narration in MP3 format for your PowerPoint presentations. Create voiceovers that can be easily added to slides.
Convert PPT to PDF with AI
Convert PowerPoint presentations to PDF with AI.
Convert PowerPoint to Video with AI
Convert PowerPoint presentations to videos with AI narration.
Extract Notes from PowerPoint
A FREE tool to extract all speaker notes from PowerPoint files.
AI PowerPoint Readability Checker
Check and improve the readability of your PowerPoint presentations with AI.
Add Password to PowerPoint
Secure your presentations with password protection
Frequently Asked Questions
Everything you need to know about adding audio to PowerPoint presentations.
Turn any idea into a presentation — free to try
An AI presentation platform to turn ideas, PDFs, Word, and Excel files into ready-to-present slides.
