Recorder Mode

Record a short screen capture of a browser tab. Useful for capturing interaction flows, animated web pages, or scrolling demos.

Open recorder

In the extension popup, click Recorder. A small overlay appears at the top of the page.

Pick what to record

• Tab — only the current browser tab.
• Window — any window on your screen (browser will prompt with the OS picker).
• Region — a rectangular area inside the tab.

Audio

• Tab audio — capture the audio of the tab (works on pages that emit audio).
• Microphone — overlay your voice on the capture.

Both can be enabled together for tutorial-style recordings.

Start, pause, stop

• Start to begin recording.
• Pause to pause mid-recording without finalising.
• Stop to finalise.

The recording is encoded in the browser using the WebCodecs API (no separate render process) and uploaded to the desktop app as an MP4. It lands on your active board as a video element.

Length

There is no hard cap. Long recordings get large (~10 MB per minute at moderate resolution). The recorder writes the encoded stream to disk incrementally so memory usage stays low.

Format and quality

• Format — MP4 (H.264) by default; WebM as an alternative.
• Resolution — matches the captured region.
• Frame rate — 30 fps default; 60 fps optional.

Limits

• DRM — pages that flag DRM (Netflix, paid courses) refuse capture.
• Audio on Firefox tab capture — limited support; use the desktop OS to capture audio separately if needed.

Where to go next

• One-Click Capture
• Video Editor Overview — edit the recording.