animated PNGs with full transparent channel

Just in case some people dont know about this obscure image format...

PNG can be animated like gif but with a full alpha channel...
Meaning no ugly blocky borders and you can change alpha per pixel gradually as you like.

I have uploaded a example here:

https://ibb.co/p64Cq3Q7

If you but this ghost dude on a image background you see him slowly vanishing.

The animated PNGs can be created with a online tool
https://ezgif.com/apng-maker

just pust in multiple pngs and it will output a single animated PNG

alot of interesting effects can be created this way