YouTube to Watch2gether is a free Chrome extension developed by jaykayukdev. It falls under the category of Browsers and is specifically listed as an Add-ons & Tools subcategory. This extension adds a convenient button to YouTube thumbnails and the video page, allowing users to easily send YouTube videos to an open Watch2gether (W2G) session.

With YouTube to Watch2gether, users can seamlessly send videos from YouTube to an ongoing W2G session. If a session is not currently open, the extension will automatically open the W2G page, but users will still need to start a session themselves. The added button is available on the video page, thumbnails, videos in a playlist, and even shorts thumbnails.

As the developer's first extension, there may be some bugs present, but the developer is committed to fixing them. The extension is open source, allowing users to review the code themselves on the project's GitHub page. Additionally, users who appreciate the extension can support the developer by buying them a coffee.

Version 1.0.2, released on February 23, 2015, includes a fix for videos not being added after a W2G redesign.