Press Start Recording, choose your screen, window or tab in the browser's picker, then press Stop when finished and download the video.
Depending on your browser and operating system, you can usually choose to include tab or system audio alongside your microphone when the sharing prompt appears.
No. The capture uses your browser's built-in screen-sharing and MediaRecorder APIs, and the resulting file is generated and downloaded entirely on your device.
Yes, when you press Start your browser's built-in picker lets you choose between your entire screen, a specific application window, or a single browser tab.