How does Imagify work (webp generation)

Hello,

I am pretty happy with how Imagify works for WordPress. In fact, I’d like to replicate its behaviour on another site that uses a custom script. Now I wonder, how does Imagify work exactly?

Like, I know I have to use the API, and I found the documentation, but the docs only say that images are going to be optimized. So I wonder what else happens.

Is Imagify creating webp with Imagick/GD and send it to the API or how would I have to imagine its internal magic?

I mean if it’s a secret, you could also tell me if the API supports webp as an image format. Or if that’s even necessary to have webp optimize. Wink wink, nudge nudge. 🙂

Thank you 🙂
-Alduin