Toolbox
Screen Recorder
Screen recorder
Record a screen, window or tab and save it as a WebM video
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Press Start, then choose what to share in the browser prompt
The browser asks which screen / window / tab to share; pressing its own "Stop sharing" button also ends the recording. The exported WebM plays in any browser — convert with a video tool if you need MP4.
Record a screen, application window or browser tab with optional system / tab audio and microphone mixing, pause and resume while recording, then preview and download the result as a WebM video.