YouTube Looper is a Chrome extension developed by matthewdeveloper1. It is a free add-on tool that falls under the Browsers category. This extension allows users to loop YouTube videos indefinitely, bypassing the time limit imposed by YouTube's native loop feature.

To utilize this extension, users simply need to click on the loop button located beside the fullscreen button in the YouTube video player. It is important to note that users should not use YouTube's native loop button. When looping is enabled, the button will turn green, and when disabled, it will turn red.

In case the loop button does not appear, users can simply refresh the page, ensuring that the extension is activated. YouTube Looper provides a convenient solution for users who want to repeat videos on YouTube without any time restrictions.