This one will take a ready-made google animation set of images, and create an embed code for it.
but it’s pretty straightforward, here is the site with the tool:
That has a tool to convert the album url (from the share button) into a script and html. Insert the script part into the head and html into the body.
The script is here in case the site disappears or drops it.
But you can make an animation and then paste the link of the animation into the box instead of the album.