TestTube
Welcome to TestTube, our ideas incubator. This is where YouTube engineers and developers test out recipes and concoctions that aren't quite fully baked and invite you to tell us how they're coming along.
Your comments will help us improve and perfect the mixtures we're working on. So jump in, play around, and send your feedback directly to the brains behind the scenes.
Insights for Audience
Discover what different audiences like doing on YouTube.
CaptionTube
Add captions and subtitles to your YouTube videos with interactive caption editor.
* need Google account linked with YouTube account (Learn more)
Video Annotations
Add interactive commentary to your videos! Link to other videos, add notes, and more.
Streams
Join Streams to chat with others who are watching the same video you are.
YouTube Music Discovery
Make playlists and discover new artists and music videos.
