- Only the chosen tab is recorded; other tabs, windows and notifications are not.
- Sound playing in that tab is included.
- Chrome's own pages (chrome://) and the Web Store can't be captured.
- Extensions need your explicit action (clicking Record or a shortcut) to start.
Glossary
What is tab capture?
Tab capture is a Chrome feature that lets an extension record a single browser tab, its picture and its sound, without capturing the rest of your screen.