WebGPU API is incredible! Just to show how incredible, there are versions of Stable Diffusion (AI image generation model) which can run in on a web-page. (Everything runs inside the browser with no need of server support).
While it's painfully slow (it's for me as I'm running it on my laptop), it runs in your browser (locally) and it's free and your data and information is safe (since you don't have to send it over the internet)