Animation for each letter. How to use "it" (Animography's Mobilo Text Editor in SVG - link inside) or how to do it yourself?

Question

JavaScript

Here is such a thing codepen.io/airnan/pen/JbOrbV
How to use it? I.e., so that the finished text uses these animations when loading the page?
Am I violating copyright by using "this" on the site?
UPD: https://animography.net/products/mobilo Here is their site, but this feature appears to be for After Effects. You can download for free for repost.
How to do the same, but only for the site?