The yt-react-db extension is a web browser extension available on Chrome. Developed by ComputerBread, this free extension falls under the category of Browsers and the subcategory of Add-ons & Tools.

The main purpose of the yt-react-db extension is to assist reactors such as live streamers, YouTubers, and editors in determining whether they can react to a video while browsing YouTube.

With this extension installed, a small icon appears every time you watch a YouTube video. The icon is vertically split into two parts - the left side indicates if you can react to the video live, while the right side indicates if you can upload your reaction.

By clicking on the icon, you can view the permissions and learn how to interpret the colors of the icon. Each side of the icon can be one of four colors: green for yes, red for no, orange if there is a delay and the delay hasn't passed, and white if for some reason the extension is unable to determine the permissions.

If the icon is fully green, you can react freely to the video without any restrictions.