What is Particles JS ?
A lot of tiny particles moving around and interacting with each other or with you have a certain appeal to them. If you are ever in a situation where you need to work with a lot of particles, Particles.js will serve you well. As is evident from the name, it is a JavaScript library that can help you create particle systems. Moreover, it is lightweight, easy to use, and gives you a lot of control.- Source
How to add Particles Js in WordPress ?
You can use Particles JS as Section Background, Column Background in WordPress using few plugins , you can use
