Overlay control

What you change here is on the overlay the moment it lands — in OBS and on every screen showing this stream, with no server in between.

Lower third

Ticker

Countdown

Alert shown for a moment, never stored

On air what OBS shows

Add this URL to OBS as a Browser Source, 1920 × 1080.

OBS Overlay

A stream overlay you control from your phone, with no server: one URL goes into OBS as a Browser Source, the other opens the remote. Both are this file; the name you give the stream is the room they share.