The Google Docs YouTube Preview Blocker is a free Chrome extension designed to prevent unwanted YouTube video previews and embedded players from loading within Google Docs and Slides. This tool is particularly beneficial for schools and educational institutions that require strict content filtering. It addresses the issue of YouTube links bypassing network restrictions by blocking network requests to YouTube when they originate from these specific Google applications.

The extension effectively blocks embedded players, ensuring that while the preview card may still appear, the video will not play and will instead show a connection error or a blank space. It is lightweight and built with the latest technology to ensure minimal performance impact and total privacy, as no user data is collected. It specifically targets Google Docs and Slides without affecting access to YouTube on other platforms, making it an ideal solution for managing online content in educational settings.