Currently we have a special algorithm that calculates the length of the slideshow by the number of photos and the style of design you select. Every design has a maximum length of 30 seconds.
If you want to maximize the amount of time each slide is shown, we recommend using 6 or fewer images. If you want to speed up the transition between slides, we recommending using more than 6 photos. Any slides with text will show for a bit longer depending on the amount of text and design selected. All in all, if you select 8 photos and include music your animation will usually be the maximum, 30 seconds long.