ChatOver – Customizable YouTube chat overlay for true fullscreen streams

Summary: ChatOver is a free, open-source browser extension that overlays YouTube chat transparently on video, enabling true fullscreen viewing with visible chat. It eliminates YouTube's split-screen mode and chat lag by allowing users to drag, resize, and customize the chat overlay in fullscreen, theater, or normal modes.

What it does

ChatOver overlays YouTube chat on top of the video with customizable fonts, colors, and transparency. It works in Chrome and Firefox, providing a lag-free chat experience without splitting the screen.

Who it's for

It is designed for YouTube viewers and streamers who want to watch or display chat alongside fullscreen video without interruptions or lag.

Why it matters

It solves YouTube's limitation of split-screen fullscreen mode and chat lag, enabling uninterrupted, customizable chat visibility during streams.