Technical
Browser source
An OBS source that renders a webpage — how alerts, chat boxes, and most overlays actually work under the hood.
Related terms
- Overlay
The graphics layered on top of your gameplay — webcam border, alerts, recent-follower box, chat box, etc.
- Alert
An on-screen pop-up (often with sound) that fires when someone follows, subscribes, or donates.
- Source
One ingredient inside an OBS scene: a game capture, webcam, image, browser overlay, or mic. Scenes are just stacks of sources.