YouTube DeSpoiler is a free Chrome extension developed by santaworkshopdev. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools subcategory. This extension is designed to hide certain information on YouTube that could potentially spoil the viewing experience.

The main purpose of YouTube DeSpoiler is to hide the total video length and other related information on YouTube. This is particularly useful for eSports VODs, where knowing the total length of a match or the time remaining can give away spoilers. By hiding this information, viewers can enjoy the content without any spoilers.

Some of the key features of YouTube DeSpoiler include hiding the total video length in the main player, search results, and suggestions. It also hides the progress bar in the main player and search results. Additionally, suggestion titles and thumbnails are hidden as well, but can be revealed by hovering over them.

To compensate for the inability to seek by the progress bar, YouTube DeSpoiler adds seek buttons to the main player. However, users can still utilize YouTube's shortcuts for seeking, such as the arrow keys and J and L keys. The extension can be easily toggled on and off by clicking the extension icon, and the progress bar for the current video can be toggled by clicking the hourglass button in the main player.