You can add a voice-over to each slide of your Classic course. This audio will be an introduction to your content as it will be played automatically when you enter the slide.

You can also add subtitles, which we strongly recommend, and even configure the self-running of your slides so that at the end of the speech you automatically navigate to the next slide.


To add voice-over in one of our slides, you will simply have to click on the following button in the slide properties menu:

This will take you to a menu where we can add an audio file (maximum size 30 MB), subtitles and configure the self-running of slides.

From here is where you could upload the audio file (maximum size 30 MB) from your computer, or you can generate the audio through Text voice-over by AI.

You can also add subtitles and configure if you want to automatically skip to the next slide when the audio ends.


You decide whether you wish to enable interactions with the elements of the slide while it plays.

If you select the option “Allow interaction with the slide”, learners will be able to interact with the elements of the slide while listening to the audio file.

If you don’t select the option “Allow interaction with the slide”, a veil will show and learners will have to listen to the audio before interacting with elements. You may stop the track (clicking the stop button in the reproduction bar) to access the content without completing the reproduction.

When you choose the audio file, you will see that a voice-over button is now enabled in the lower controls of the slide. This button will allow you to play and stop the voice-over while you're in the slide editor.

Keep in mind that if your course is on sequential navigation mode, the student won't be able to stop the audio when it's automatically being played.

Voice-over considerations

In Express courses voice-over is not supported. You’ll see that it doesn’t appear in the slide editor for its configuration. This is due to the fact that the express course is designed to be streamlined content for fast consumption and without sequential browsing, and voice-over does not have a valid format for this type of content. 

As an extra tip to create your audio files with text see the following services for free below:

Voice-over editing in accessible mode

  • Add a transcript when necessary. This text should be descriptive and you can make it more useful with formatting and adding captions, for example. You can learn more about this according to WCAG here.

  • Please note that even if you set the "advance mode" or "slide interaction" these features will not be available in the accessible mode of the course.

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