I believe it's using the web speech API https://developer.mozilla.org/en-US/docs/Web/API/Web_Speech_API https://developer.mozilla.org/en-US/docs/Web/API/Web_Spe

I believe it's using the web speech API https://developer.mozilla.org/en-US/docs/Web/API/Web_Speech_API https://developer.mozilla.org/en-US/docs/Web/API/Web_Speech_... I've played with it a bit (I made a local nonsense social media thing, reading llm content), and its surprisingly easy to get text to display in sync with the audio. It works with voices that are installed on the users system.