The Sprite Editor
Creating Sprites The Easy Way
Babylon.js has a sprite system with many features and components. Babylon.js 4.2 introduced a new tool to make it simple and easy to leverage this powerful system. The Babylon.js Sprite Editor. Built right into The Inspector, creating sprite managers and controlling sprites is now as easy as right-clicking!

You can jump in and play around with it here: Sprite Editor
For an introductory look at the Particle Editor, check out where it all started with these videos:
When you're ready to learn more, head on over to the Introduction to Sprites Documentation for more info.