Stop Autoplay for YouTube is a Firefox extension designed to enhance user experience by preventing videos from playing automatically when opened in new tabs. This useful tool addresses a common frustration for users who often open multiple videos simultaneously, ensuring that only the selected video plays while others remain paused. The extension also includes a buffering feature, eliminating the annoying loading spinner that often appears when videos are buffering in the background.

This extension is particularly beneficial for those who prefer to manage their video playback more effectively, as it allows for a more controlled viewing experience. However, it is important to note that the extension does not affect playlist functionality, as YouTube itself provides an option to disable auto-playing the next video. Available as an open-source project, it is a popular choice among users, boasting over 13,000 users on its Chrome counterpart.