Frequently Asked Questions


What is SlideSpeech?
Why use text-to-speech? 
  • Making computers talk by simply writing is as revolutionary as recording speech as written words; it simply goes the other way
  • The alternative to text-to-speech is an audio recording which will have some combination of the following issues:
    • Poor recording quality (too loud, too soft)
    • Background noise (breath noises)
    • Poor voice quality (accents, "um")
    • Inconsistent (multiple speakers)
    • Difficult to edit
    • Difficult to maintain or modify later
  • Text-to-speech voices are now so good, you may struggle to tell what is real and what is not.  For example, listen to the voices from Nuance / Loquendo. SlideSpeech offers three voices from CereProc, or you can use a plug-in to drive any voice you have on your PC or Android phone/tablet, such as this Spanish voice.
  • Text is searchable. Video is not. Every word of every slide of public SlideSpeech presentations can be found using a Google search.
  • Text can be easily translated. Here is SlideSpeech in English and German (up arrow to toggle).
  • Text can be edited by multiple people over time, so it supports collaboration and continual improvement.
What does SlideSpeech require for use on the web?
What does SlideSpeech require for use on mobile devices?
What does SlideSpeech require for use on a desktop/laptop offline?
  • Presentations can be prepared for upload to SlideSpeech using a variety of software. The system can convert presentation files, PDF files and image files (.png and .jpg format).

Creating Talking Presentations

What is the simplest way to make a talking presentation?
  • We've worked hard to get this down to one click. If you are using Google Chrome, install the Google Chrome Extension.  When you have added some speaker notes to your presentation in Google Drive, click SlideSpeech Convert on your Google Drive presentation menu. Here is a SlideSpeech walk through of how things work from that point.
What is the best way to make a talking presentation?
  • Talking presentations should use images or large text and very short scripts (one or two sentences per slide). It is much better to think of your presentation as a movie rather than as a document.
  • A quick way to obtain an image is to take a screenshot (particularly just the important part of the screen you want) using the utilities available for your operating system (MacWindowsLinux). When you paste the image into your presentation and add speaker notes, you effectively talk about what you saw on the screen.
    • For Chromebook users, the screenshot hot key is Ctrl+page flipper. For partial screenshots use Ctrl+Shift+page flipper.
How can I make a talking presentation using a mobile device?
How can I make a talking presentation using my own voice?
What languages are available?
  • The SlideSpeech online editor allows mixing the three voices available from Cereproc: US English female, UK English male and German male. You can use different voices on a slide by highlighting the text to be spoken with the selected voice and then selecting the voice from the Voices tab of the editor.
  • Using the SlideSpeech extension for LibreOffice/OpenOffice you can get your computer to speak with any voice you have installed on your PC. Some voices may be available for purchase. Others, such as those on the Mac, are available for free. Here is a sampling of the Mac voices (YouTube video).

Can the playback start automatically?

Permission Issues

SlideSpeech presentations can be both Private and
Public Editable. How does that work?
  • The two permission settings relate to different things. A Private presentation will not show up in searches or in recent presentation lists (on the mobile apps).
    Public Editable presentation can be edited by anyone with the link (substitute "edit.html?code=" for "s/" in the presentation playback link).
  • Modify your presentation's permissions on the SlideSpeech website by editing your presentation and selecting the metadata tab.

Fixing Format Issues

SlideSpeech changes the font/format of my slides.
Can I fix this?
  • Yes you can. The changes occur due to the availability of fonts on different systems. To fix PowerPoint presentations, first Save As .png, Every Slide, to create a folder containing images of each of your slides. Then use Import > Photo Album to pull these images back into PowerPoint. Each slide is now frozen as an image, so the formatting cannot be changed by SlideSpeech. Please let us know if you encounter this problem at
SlideSpeech adds "Click to Add Title" to my slides.
Can I fix this?
  • Yes you can. Change the template for your slides to blank using Layout > Blank on the Home tab in PowerPoint. Please let us know if you encounter this problem at

Adding Interactivity

How can I add interaction?
More Questions?

How can I add ask another question?