Screen Recorder

Press record on this page and your browser asks which screen, window or tab to share. Everything after that happens on your machine: the frames are captured, the audio mixed and the file assembled in the page. When you stop, the recording appears in the same place the live picture was, ready to play back and download.

No. It is built in your browser and held in memory until you download it or save it to your account. There is no upload and no server copy — which is the whole reason to use this instead of a product that streams your screen somewhere before you have watched it back yourself.

Because that is what Chrome, Edge and Firefox will write. Safari writes MP4. WebM plays in every modern browser, in VLC, and on most editing software — but converting one to MP4 properly means re-encoding, which takes minutes of solid processing for a recording of any length. Promising a fast MP4 and then stalling would be worse than saying this plainly.

In Chrome and Edge, yes — sharing a tab captures that tab's audio, and sharing a whole screen on Windows captures system audio. Both get mixed with your microphone into one track. Firefox does not capture screen or tab audio at all, so there you get the microphone only. Nothing here can change that; it is a browser limitation.

Longer than most people need, but not unlimited, because the browser holds the whole thing in memory. At 1080p on the balanced setting that is roughly twenty minutes before a modest machine starts to struggle. The size next to the clock tells you where you are, and a warning appears before it becomes a problem — dropping to the small quality setting roughly triples what fits.

No, and no browser-based recorder does. The feature it needs does not exist on iOS or Android at all. Both have a screen recorder built into the operating system — on iPhone it is in Control Centre, on Android in the quick settings — and those are the right tools there.

Almost always because what you shared is protected video. Netflix, Disney+ and other streaming services deliberately record as black frames, and no recorder in a browser can capture them. If it is not that, check you shared the window you meant to — a minimised window records as nothing on some systems.

Not here — this records and hands you the file. For a clip rather than a whole session, the practical route is to record only what you need, or to open the file in any editor afterwards. A trimming tool is a different job and would be a different page.

In the file. The screen and the camera are drawn into one picture as you record, which is the only way a single video file can contain both. It is not mirrored, unlike a webcam preview — a recording other people watch has to be the right way round, or every word behind you is backwards.