How to Add Audio to PowerPoint
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 and sets it 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 the details of adding audio to your presentation.
Plays Across All Slides
SlideSpeak embeds your audio on slide 1 and sets it to auto-play across the entire presentation. Perfect for background music, voiceovers, or narration that plays through every slide.
FREE & No Sign-up Required
Our audio embedder is 100% free with no account required. Upload your files and download the result. No watermarks, no limits.
Secure Online Processing
We encrypt every file you upload in transit and delete it automatically once processing finishes. We never share or store your presentations or audio files.
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 the tool embeds it without issue.
Preserves Your Design
Your presentation's design, animations, and formatting stay intact. We only add the audio.
Lightning Fast
Audio embedding takes just a few seconds, even for large presentations with many slides.
Auto-Play Across Slides
SlideSpeak starts your audio automatically and plays it across every slide during your presentation.
Secure and Private
We encrypt files in transit and delete them permanently after processing. Your data stays private.
No Software Needed
Works in your browser. You don't need Microsoft PowerPoint or any other software.
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 |
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Frequently Asked Questions
Everything you need to know about adding audio to PowerPoint presentations.
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