Revisiting Animated PNGs as a GIF Alternative

The one on the left is just a native animated PNG image, inserted into the slide. The most updated version of Storyline plays these automatically, the same way inserted animated GIFs play. There is just no control over playback (due to the way that browsers render the images). The one on the right gets modified so that the PNG, which Storyline normally embeds into an SVG wrapper, is reworked into a canvas element still inside the original SVG. Once in the canvas, the JS library can control its playback.