Big Timestamp is a free Chrome add-on developed by Composite, falling under the Browsers category with a focus on Add-ons & Tools. This handy tool adds a timestamp on popular video sites like Amazon Video and YouTube, enhancing the viewing experience.

With Big Timestamp, users can easily place and customize the timestamp on videos to support fullscreen mode. It is particularly useful for presentations where referencing specific moments is crucial. The add-on provides flexibility by allowing users to drag the timestamp to their preferred location and disable it whenever needed. For Safari and Firefox users, a userscript version is also available for download.