Upload your PowerPoint, write a script for each slide, and generate studio-quality AI narration in seconds. Then export it exactly how you need — as a video, a shareable link, a PPTX with audio, or a ZIP for your LMS.
Drop your PowerPoint here
or click to browse — .pptx, .ppt, .jpg, .png up to 50MB
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Add voiceover to presentations made in any tool
Export from any tool as .pptx or an image — SlideSpeak handles the rest.
You have two options: record your own voice inside PowerPoint, or use AI narration with SlideSpeak. Here's an honest comparison of both approaches.
Option A
Limitations of this method
Option B
Why this is better
| Feature | PowerPoint Record | SlideSpeak AI |
|---|---|---|
| Microphone required | Yes | No |
| Time for a 20-slide deck | 20–40 min | Under 60 sec |
| Sound quality | Depends on mic | Studio-quality |
| Edit one slide without re-recording all | No | Yes |
| Multiple languages | You must speak it | 59 languages |
| Export as MP4 video | Yes | Yes |
| PPTX with audio embedded | Yes | Yes |
| Shareable online link | No | Yes |
| Works on PowerPoint for Web / older versions | Limited | Yes |
| Works with Google Slides / Canva | No | Yes (.pptx export) |
| Free to try | Yes (needs Office licence) | Yes — no account needed |
Google Slides has no built-in voiceover feature. The workaround: go to File → Download → Microsoft PowerPoint (.pptx), then upload the file to SlideSpeak. You'll have studio-quality AI narration in under 2 minutes.
Canva's voiceover recording is basic and lacks multi-language support. Instead, export your Canva deck as PowerPoint (.pptx)from the Share menu, then upload it to SlideSpeak for AI narration with 59 language options.
Keynote has a basic narration recording mode but no AI voice option. Export your Keynote file as PowerPoint (.pptx)via File → Export To, then upload it to SlideSpeak for AI voiceover in any language.
Upload any .pptx, .ppt, Google Slides export, or Canva export
No software to install. No account required for the free trial. Just upload and go.
Drag and drop your PowerPoint file (.pptx or .ppt) onto the upload zone above — or click to browse. You can also upload individual slide images (.jpg, .png, .webp) if you don't have a PPTX file.
What happens next:
Supports: .pptx · .ppt · .jpg · .png · .webp — up to 50MB
In the Studio, you'll see each slide displayed one at a time with a script box underneath it. This is where you type the words you want the AI to speak for that slide.
Option A — Type your own script
Write exactly what you want said. The AI voice reads your words verbatim — great for compliance training where exact phrasing matters.
Option B — Leave the box blank
The AI will read whatever text is already visible on your slide. Perfect if your slides already have good content text on them.
Tip: You can mix and match — write scripts for some slides and leave others blank.
At the top of the Studio, choose your voice and language from the dropdowns. Your selection applies to all slides — but you can change it at any time and regenerate.
8 Voices — Female
8 Voices — Male
59 Languages
All voices are powered by Google Chirp 3 HD — the same engine used by enterprise teams. They sound natural, not robotic.
Click "Generate all voiceovers" to create audio for every slide at once, or use the mic button on a single slide to generate one at a time. A 20-slide deck typically takes under 60 seconds.
Preview before downloading
Each slide has a play button — listen to the generated audio and make sure you're happy with it before exporting anything.
Re-generate anytime
Not happy with a slide? Edit the script and click the mic button again. Just that one slide is re-generated — not the whole deck.
First 5 slides free — no account needed
The Studio is where all the work happens. Here's exactly what each part does.
Your slide is displayed as a large preview image. Use the left and right arrows to move between slides, or click the slide number to jump to any slide. The current slide number is always shown (e.g. "Slide 3 of 12").
Below each slide is a text box labelled "Script for this slide". Type what you want the AI to say. If you leave it blank, the AI reads the text on the slide itself. Your scripts are saved automatically as you type.
At the top of the Studio, two dropdowns let you choose your voice and language. These apply to all slides. Change them at any time — then regenerate any or all slides to hear the new voice.
"Generate all" creates voiceovers for every slide in one go. The mic icon on each slide generates just that one slide. A green checkmark appears when a slide has audio ready to preview or export.
Once a slide has audio generated, a play button appears. Click it to hear the narration for that slide. If you're not happy, edit the script and regenerate — only that slide is re-processed.
When you're ready, click "Export" to open the export panel. You'll see all four export options — ZIP, PPTX with audio, MP4 video, and Publish online. You can export in any format, as many times as you like.
Every project includes all four export formats. Here's exactly what each one gives you and when to use it.
Best for: LMS platforms like Moodle, Articulate, iSpring, Canvass
Downloads a ZIP archive containing two files per slide: a JPEG image of the slide and an MP3 audio file of the voiceover. The files are named to match — e.g. slide_01.jpg and slide_01.mp3.
What's inside the ZIP
How to use it in Moodle
When to choose this
Best for: sharing with a team, presenting in PowerPoint, keeping animations
Takes your original PPTX file and embeds the generated MP3 audio directly into each slide. Open it in PowerPoint and you'll see a small speaker icon on each slide — click it to play that slide's narration. Crucially, all your animations and transitions are completely untouched because we embed audio into your original file rather than converting it to images.
What you get
How to use it
When to choose this
Best for: YouTube, website embedding, social media, video players
Stitches your slides and voiceovers together into a single MP4 video file. Each slide is shown for exactly as long as its audio takes — so a 30-second narration means that slide stays on screen for 30 seconds. The result is a standard video anyone can watch in any video player, browser, or media app.
What you get
How to use it
When to choose this
Note: Because slides become video frames, PowerPoint animations are not shown in the MP4 export — each slide appears as a static image. If animations matter, use the PPTX export instead.
Best for: sharing with clients, embedding in emails or websites, no-download access
Publishes your narrated presentation as a live web page with its own URL. Anyone who clicks the link opens the presentation in their browser — they can click through slides, hear the narration for each one, and see your animations. No PowerPoint needed. No download required.Powered by Microsoft Office Online.
What you get
How to use it
When to choose this
| Feature | ZIP | PPTX | MP4 | Online |
|---|---|---|---|---|
| Animations preserved | — | — | ||
| Single downloadable file | — | — | ||
| Works without PowerPoint | — | — | ||
| Ideal for LMS upload | — | — | ||
| Share with a link | — | — | — | |
| Can be edited after export | — | — | — | |
| Viewer can control slide pace | — | — |
Upload your .pptx file to SlideSpeak. Type a script for each slide — or leave the box blank and the AI will read whatever text is on the slide. Choose one of 8 Google Chirp 3 HD voices, pick your language, and click 'Generate all voiceovers'. Your 20-slide deck is narrated in under 60 seconds. Export as a narrated MP4 video, a PPTX with audio embedded, a ZIP of images + MP3s, or a shareable web link.
Google Slides doesn't have a built-in AI voiceover feature. The fastest workaround: open your Google Slides presentation, go to File → Download → Microsoft PowerPoint (.pptx), then upload that file to SlideSpeak. You'll have studio-quality AI narration in under 2 minutes, with your full slide layout preserved.
SlideSpeak lets you add professional AI narration to any PowerPoint without a microphone. Upload your .pptx, type what you want said for each slide (or leave blank to read slide text), choose a voice, and click Generate. No recording session. No retakes. No background noise. A 30-slide deck takes about 60–90 seconds.
Upload your .pptx to SlideSpeak, write or generate voiceover scripts for each slide, then click Export → MP4. SlideSpeak stitches each slide image together with its audio and produces a single .mp4 file — each slide stays on screen for exactly as long as its narration plays. Download and upload to YouTube, Vimeo, your website, or an LMS.
Canva's built-in voiceover is basic and limited to recording your own voice. For AI narration in 59 languages: export your Canva presentation via Share → Download → Microsoft PowerPoint (.pptx), then upload it to SlideSpeak. Your slide layouts come across cleanly and you can narrate in any language.
In Keynote, go to File → Export To → PowerPoint, then upload the resulting .pptx to SlideSpeak. You'll get AI narration in any of 59 languages with 8 voice options — far beyond what Keynote's own narration recording supports.
SlideSpeak offers the highest-quality free trial for adding AI voiceover to PowerPoint. The free tier gives you 5 slides with no account required — powered by Google Chirp 3 HD voices, which are genuinely natural-sounding. Other tools like Murf.ai or ElevenLabs can generate audio but require you to manually sync audio to slides yourself. SlideSpeak handles the whole workflow end-to-end.
Yes. SlideSpeak supports 59 languages including Australian, American, British and Indian English, Spanish (Spain and US), French (France and Canada), German, Italian, Portuguese, Mandarin, Japanese, Korean, Arabic, Hindi, and many more. Switch languages at any time and regenerate — the same script is narrated in the new language without retyping anything.
Upload your .pptx to SlideSpeak and write narration scripts for each slide. Choose a professional voice (Kore or Charon work well for training content). Generate all voiceovers, then export as a ZIP (images + MP3s) — most LMS platforms like Moodle, Blackboard, Canvas, and D2L accept this format. If your LMS supports MP4, use the video export instead.
No. SlideSpeak runs entirely in your browser — Chrome, Firefox, Safari, Edge, on Windows, Mac, or tablet. Upload your file, write your scripts, generate audio, and download. Nothing to install, no account required for the free trial.
Yes — when you export as PPTX with audio embedded or Publish online, your original PowerPoint file is used as-is. Every animation, transition, and slide layout is completely untouched. If you export as MP4 or ZIP, slides appear as static images (animations are not in video frames by definition).
Yes. In the Studio, every slide with generated audio shows a play button. Listen to each slide's narration individually before exporting. Not happy with one? Edit that slide's script and click the mic button — only that one slide is re-generated. The rest of your audio stays as-is.
The PPTX export embeds audio directly into your original PowerPoint file — you get one .pptx with a speaker icon on each slide and all animations preserved. The ZIP export gives you separate JPEG and MP3 files (one pair per slide) — this is what most LMS platforms expect when building eLearning courses.
The viewer clicks a link and opens your presentation in their browser — it looks like an interactive web slideshow. They click through slides at their own pace and hear the narration for each one. Powered by Microsoft Office Online, so animations and formatting look exactly as in PowerPoint. No download, no account needed on their end.
The free trial gives you 5 slides to narrate — no account needed. Once you've used those, you can upgrade. The Starter plan ($9.95 one-time) gives you 5 project credits with unlimited slides per project. The Pro plan ($14.95/month) gives you unlimited projects and unlimited slides.
Start free. Pay only when you need more. No subscriptions unless you want one.
All plans include all 4 export formats — ZIP, PPTX with audio, MP4 video, and Publish online.
Upload your presentation now. Your first 5 slides are free — no account, no credit card.
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