2 Replies
Simon Perkins

Hi Natasha and welcome to the community!

Currently this is not possible in Storyline.  You could add a feature request though

A few people here have used a variety of tools to convert text to speech so some will hopefully be along soon to share their thoughts.  Personally I wouldn't recommend any of the ones I've tried (for production work) as they're too stilted/robotic.  The only time I use them is for working out the timings of animations/effects/etc so I know in advance how to build slides prior to the voiceovers being added at a later date.