Three steps to audio
Upload PowerPoint
Drop your .pptx file. AI extracts speaker notes and slide text from every slide.
Choose a Voice
Pick from 550+ AI voices. Adjust speed, pitch, and tone. Preview before you commit.
Download Audio
Hit generate. Download your narrated presentation as MP3 — full deck or per slide.
What you get
Why add audio to presentations?
Slides without a voice are just pictures with bullet points. Audio turns a static deck into something people actually absorb. Here's where it shines.
- Self-paced training. Employees learn on their own schedule. No need to book a live trainer every time.
- Async meetings. Record your slides once. Send the link. Everyone catches up when it suits them.
- Accessibility. Screen readers struggle with complex slides. Audio narration gives everyone equal access to the content.
- E-learning courses. Turn slide decks into complete course modules. Students hear the explanation, see the visuals.
- Sales decks on autopilot. Your pitch runs without you in the room. Great for follow-ups and partner sharing.
- Conference submissions. Some conferences accept pre-recorded talks. PPTX to audio gets you there in minutes.
What gets narrated?
Not everything on a slide should be read aloud. Here's how the AI decides what to narrate.
- Speaker notes are primary. If a slide has speaker notes, that text becomes the narration. This is the best way to control exactly what gets said.
- Slide text is the fallback. No speaker notes? The AI reads the slide text — titles, bullets, and body copy — in reading order.
- Images and charts. Visual elements get narrated when you describe them in speaker notes. Write "This chart shows Q3 growth at 18%" and the AI will say it.
Voices & Languages
The right voice makes or breaks a presentation. Pick one that matches your audience and your brand.
550+ voices
Male, female, and neutral options. Conversational, professional, and warm tones to match any deck.
57 languages
English, Spanish, French, German, Japanese, Chinese, Arabic, Hindi, and 49 more.
Full control
Adjust speed, pitch, and emphasis. Preview any voice on your slides before generating.
Best voice for your deck
Different presentations call for different voices. Here's a cheat sheet.
| Presentation Type | Best Voice Style | Why |
|---|---|---|
| Training deck | Warm, conversational | Keeps learners engaged without feeling like a lecture |
| Sales pitch | Confident, measured | Builds trust and authority with prospects |
| Course module | Clear, professional | Easy to follow for extended listening sessions |
| Conference talk | Energetic, natural | Holds attention in a crowded schedule |
| Internal report | Neutral, steady | Delivers data without editorializing |
Security & Privacy
Presentations often contain sensitive data. Your files are safe with us.
Encrypted transfer
All uploads travel over HTTPS. Your PPTX file is protected in transit and at rest.
Auto-deletion
Source files are processed and deleted. Only your generated audio stays in your account.
No third-party sharing
Your presentations are never shared, sold, or used for training. Full privacy, full stop.
Questions?
How do I convert a PowerPoint to audio?
Upload your .pptx file at notevibes.com/powerpoint-voiceover. The AI extracts speaker notes and slide text, lets you pick a voice, and generates narrated audio. Download as MP3.
Does it read speaker notes or slide text?
Speaker notes first. If a slide has speaker notes, those become the narration. No speaker notes? The AI reads the slide text instead. You can edit everything before generating.
Can I convert PPTX to MP3?
Yes. Upload your PPTX, choose a voice, and download the narration as an MP3 file. You can get one MP3 for the full deck or separate files per slide.
What about Google Slides or Keynote?
Export your Google Slides or Keynote file as .pptx first, then upload. Both apps have a built-in "Download as PowerPoint" option.
How long does conversion take?
A typical 20-slide deck converts in under a minute. Larger presentations with heavy speaker notes may take 2-3 minutes. You can preview individual slides instantly.
Can I use the audio commercially?
Yes. All paid plans include full commercial rights. Use the audio in presentations, training materials, YouTube videos, courses, or any professional context.
Is PPTX to audio free?
You can try it free with limited characters. Full deck conversion is available on paid plans starting at $19/month.
What voices sound best for presentations?
For training, try warm conversational voices. For pitches, go confident and measured. For reports, neutral and steady. Preview any voice on your actual slides before committing.
Are my presentations kept private?
Yes. Files are encrypted in transit, processed securely, and source files are auto-deleted after conversion. Your content is never shared or used for AI training.
What languages are supported?
Notevibes supports 57 languages including English, Spanish, French, German, Japanese, Chinese, Arabic, Hindi, and many more. Each language has multiple voice options.
Your slides, now with a voice
Upload your PowerPoint. AI reads your speaker notes, picks up where you left off, and turns every slide into narrated audio. Done in minutes.
Convert Your PPTX550+ voices · 57 languages · Slide-by-slide narration · Full commercial rights