Scripts for After Effects are incredibly powerful, and come in all shapes and sizes. Usually, After Effect scripts are designed to automate particular tasks that may be difficult or take a long time if done manually.
To put it simply, scripts for After Effects are basically a set of instructions that After Effects will run through to perform a particular task or tasks.
Take our Numero script for example, this script creates a sliding number counter in After Effects. Now, to create this effect manually usually requires a lot of effort: multiple layers have to be created, after effects expressions have to be remembered and put in the right place, track mattes have to be applied... it all takes quite a long time. The Numero After Effect script automates the entire process for you though, so all you have to do is provide some numbers and hit the Go button.
If you've used Photoshop Actions before, then After Effects scripts are very similar, they can produce complex effects at the touch of a button, or automate the boring tasks you never like doing.
If you're interested in learning more about scripts for After Effects, take a look at our blog post: What are After Effects Scripts?
The Loop After Effects scripts are all designed to help save you time and effort when working with After Effects.