Adding a progress bar to your Google Slides

Maybe I should learn how to package this as an extension...

I was sitting through a presentation at the Ohio Educational Technology Conference when on one of the slides I thought I saw a progress bar for the number of slides in the presentation at the bottom of the slide. The bar was a mirage, but that started me on the trek to add progress bars to the bottom of my presentation slides.

I wish it was an extension

O…