Alphabet’s YouTube is in the process of testing a new feature that enables users to append public notes under a video for additional context. This feature is currently being introduced in the United States and will be accessible in English on mobile devices. A chosen group of contributors has been invited to compose notes to test the feature and assist in enhancing the system.

The utility of these notes will initially be assessed by third-party evaluators. As the trial advances, contributors might also get the chance to rate the notes. Users in the U.S. can anticipate seeing these notes on videos in the upcoming period.