YouTube TimeSlider is a free Chrome add-on developed by Paul Berry. It falls under the category of Browsers and specifically belongs to the Add-ons & Tools subcategory. This handy tool allows users to set start and end times for any YouTube video using a simple slider.

One of the main features of YouTube TimeSlider is its usefulness for music videos. If you want to skip the annoying intros, outros, or any other parts of a video, this add-on makes it easy. Simply drag the sliders to set the desired start and end times, and click the "Save" button below the slider to save these positions for the current video.

When you load up the video again, it will automatically start and end at the times you specified. If you want to remove the saved times for a particular video, you can use the "Reset" button. Additionally, there is an "End here" button that sets the end time to the current video time.

YouTube TimeSlider also offers some extra features, including automatic syncing of times between devices and optional import, export, and delete options in the popup menu.

Whether you want to skip parts of a video or have more control over the playback, YouTube TimeSlider is a useful tool for customizing your YouTube viewing experience.