AI voice over for PowerPoint presentations
Turn slide narration into MP3 audio for PowerPoint. Prepare a script for each slide, import the files, and check playback settings in your presentation.
The free tool accepts up to 16000 characters per generation. A guest daily allowance applies. Paid use follows the limits and features of your current plan.
Preview 41 voices for free. Sign in to save cloned voices and unlock higher limits.
Free generations left today: 1 / 1
Optional preset to guide tone and delivery.
Calm. Warm, reassuring delivery at a gentle pace.
Optional notes to fine-tune pacing, emphasis, or mood.
0 / 300 charactersSynthetic voice example · English audio
Hear a voice clone before you try
Listen to the reference recording, then hear new words in the cloned voice.
Reference recording
Cloned voice · new text
Sign up for one short, free voice-cloning trial. Upgrade to save and reuse your voice.
How to use it
Create spoken narration from your presentation script and add it to PowerPoint as audio. Working slide by slide makes it easier to match each explanation to the visual material and update individual sections later.
Write a spoken explanation for each slide
Explain the main idea instead of simply reading every bullet. Describe the relevant takeaway from charts and remove notes that are intended only for the presenter.
Generate clearly named audio files
Paste a slide's script, choose a voice, and review the result. Download the MP3 with a filename that identifies the slide and revision.
Insert and test in PowerPoint
Use the audio insertion options available in your PowerPoint version to add each file. Configure playback and slide timing, then run the presentation from the beginning.
What you can make
- Narration for a self-paced onboarding presentation
- A spoken explanation of a chart or process slide
- Audio instructions for an internal training deck

Privacy first
Your draft stays in your browser until you generate. Guest audio is not saved to a personal history.
Make the result useful
Keep slide changes under the viewer's control
Decide whether viewers advance manually or watch an automatically timed presentation. Configure the audio and slide transition settings accordingly. Test what happens when someone moves backward or revisits a slide, especially if your presentation is meant for independent viewing.
Test the format you will actually share
A slideshow, exported video, and browser preview may behave differently. Open the intended delivery format and check that narration plays, charts remain readable, and transitions leave enough time. Keep a written version of the explanation available for people who cannot listen.
Try an example script
This slide shows the three stages of our project. We begin by collecting requirements, then build a small working version. The final stage is a review of the result with the people who will use it.
Tools
Free AI Video Dubbing
Dub any video into 70+ languages with cloned voices. Free, no account, first 60 seconds.
AI Text-to-Speech
Preview a multilingual AI voice library, choose a style, and generate a free speech preview within the daily guest limit.
Free Video & Audio Transcription
Transcribe video and audio files for free. Upload up to 60 minutes and get raw, paragraph, or sentence transcripts.
Audio to Text Converter — Free Online Transcription
Convert audio to text online for free. Upload MP3, WAV, M4A, or any audio file and get an accurate transcript in seconds — up to 60 minutes per file.
MP3 to Text — Free Online MP3 Transcription
Convert MP3 to text online for free. Upload an MP3 file and get an accurate transcript in seconds — up to 60 minutes, no signup.
Speech to Text — Free Online Audio Transcription
Convert speech to text online for free. Upload an audio or video recording and get accurate, editable text in seconds — up to 60 minutes.
Video to SRT
Generate a clean SRT subtitle file from your audio or video. Copy or download the SRT instantly for free.
Free Subtitle Generator Online
Generate subtitles from audio or video for free. Preview and edit every subtitle cue beside your video, then download an SRT.
Free Auto Caption Generator
Create automatic captions for videos online. Upload your video, generate subtitles, adjust readability, and export caption results.
Free YouTube Transcript Generator
Paste a public YouTube link and extract a clean transcript with timestamps for free. Copy the text or download TXT and SRT exports instantly.
Free YouTube Chapter Generator
Generate accurate YouTube chapters with timestamps from any public video link. Edit, copy, and download ready-to-paste chapter text for free.
Subtitle Translator
Translate SRT or VTT subtitle files online while preserving cue timing and file structure.
Add Subtitles to Video
Upload a video to add subtitles instantly. Download both the SRT file and a subtitled MP4 for free.
Free YouTube Thumbnail Maker with AI
Describe your video, add up to three photos, and create a polished 16:9 YouTube thumbnail in minutes.
Questions about this workflow

Translate your videos and use audio & video tools
Resources
Company
Free tools
- Free YouTube Thumbnail Maker with AI
- Free Text to Speech
- Free Text to MP3
- Free AI Voice Generator
- Free Transcribe Video to Text
- Free Audio to Text
- Free MP3 to Text
- Free Speech to Text
- Free Video to SRT
- Free Subtitle Generator
- Free YouTube Transcript
- Free YouTube Chapter Generator
- Free Subtitle Translator
- Free Add Subtitles to Video
Contact & demo
© 2026 VoiceCheap. All rights reserved.
