I used this in my Anki deck for John Heisig's Remembering the Kanji. The stroke ordering was helpful and it was animated with CSS. It's been a while, so I can't remember who to give credit to for the RTK deck or the CSS animations.

I also built a little tool that would expand out the Kanji character into its constituent radicals and Heisig primitives so I could at them to my study code.

At that time, I was reading NHK Web News Easy on a regular basis and wanted to study those characters with Heisig's visual approach.