Can I add narration after I've already recorded?

No — turn on the microphone toggle before you start recording if you want narration included. It can't be added retroactively to a recording that's already finished.

Should I record a specific region or the full screen?

Recording just a selected region re-draws each frame through a canvas before recording, which uses more processing than a raw full capture. For very long recordings on an older machine, recording the full capture and cropping it afterward with the Trim Video tool may perform better.

What file format does the screen recorder save?

It saves MP4 (H.264 video with AAC audio) when your browser can record that, which is common in recent Chrome, Edge and Safari. Otherwise it saves WebM. The page tells you which one you got, and the file name carries the date and time so recordings do not overwrite each other.

Can I record just one window or part of the screen?

Yes, in two steps. The browser's sharing dialog lets you choose a whole screen, one window or one tab. Then, on the preview, you can drag a rectangle and press Record Selected Region. The Record Selected Region button appears only once the rectangle is at least 20 pixels across and high.

Will my voice and the computer's sound both be recorded?

With Microphone on, your voice is mixed with any computer audio the sharing dialog provided, into one track. If microphone access is refused, the tool says so and records the video plus computer audio only. A level meter shows whether the microphone is picking you up.

Why does my browser ask for permission more than once?

Screen sharing, the microphone and the camera are separate permissions, and the browser asks for each. The camera is requested when you switch the bubble on. If you refused one earlier, many browsers stop asking, and you must re-allow it in the site settings.

Does pausing leave a gap in the recording?

No. Pause stops the recorder and the timer, and Resume continues the same file, so the paused stretch is simply not in the clip. Stop ends the take and shows the player. If you close the sharing from the browser's own Stop sharing button, the recording ends the same way.

Home/Video Tools/Screen Recorder

Screen Recorder

Record your screen, a window, or a browser tab — optionally just a selected region

Files never storedRuns on your device

Record your screen, a window, or a browser tab — entirely in your browser. Nothing is uploaded anywhere.

About Screen Recorder

Records your screen, a specific application window, or a browser tab directly from your browser, with optional microphone audio. After choosing what to share, optionally drag to select just a region of it to record, instead of the whole thing.

Watch: Screen Recorder in Action

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Can I add narration after I've already recorded?: No — turn on the microphone toggle before you start recording if you want narration included. It can't be added retroactively to a recording that's already finished.
Should I record a specific region or the full screen?: Recording just a selected region re-draws each frame through a canvas before recording, which uses more processing than a raw full capture. For very long recordings on an older machine, recording the full capture and cropping it afterward with the Trim Video tool may perform better.
What file format does the screen recorder save?: It saves MP4 (H.264 video with AAC audio) when your browser can record that, which is common in recent Chrome, Edge and Safari. Otherwise it saves WebM. The page tells you which one you got, and the file name carries the date and time so recordings do not overwrite each other.
Can I record just one window or part of the screen?: Yes, in two steps. The browser's sharing dialog lets you choose a whole screen, one window or one tab. Then, on the preview, you can drag a rectangle and press Record Selected Region. The Record Selected Region button appears only once the rectangle is at least 20 pixels across and high.
Will my voice and the computer's sound both be recorded?: With Microphone on, your voice is mixed with any computer audio the sharing dialog provided, into one track. If microphone access is refused, the tool says so and records the video plus computer audio only. A level meter shows whether the microphone is picking you up.
Why does my browser ask for permission more than once?: Screen sharing, the microphone and the camera are separate permissions, and the browser asks for each. The camera is requested when you switch the bubble on. If you refused one earlier, many browsers stop asking, and you must re-allow it in the site settings.
Does pausing leave a gap in the recording?: No. Pause stops the recorder and the timer, and Resume continues the same file, so the paused stretch is simply not in the clip. Stop ends the take and shows the player. If you close the sharing from the browser's own Stop sharing button, the recording ends the same way.

How to use Screen Recorder

Set the switches on the first screen before you begin: Camera bubble, 3-2-1 countdown and Microphone all start switched on, and a Microphone drop-down appears when your computer has more than one input. Click Start Recording and your browser opens its own sharing dialog, where you pick a whole screen, a single window or a browser tab.

A preview then appears. Drag across it to outline an area and choose Record Selected Region, or choose Record Full Capture to take everything. After the countdown, a timer runs; use Pause, Resume and Stop, and glance at the small level meter to confirm your voice is being picked up. When you stop, the clip plays back in the page. Press Download Recording to save it, or Record Another to start over.

When to use it

Reach for it when showing is easier than explaining: a software walkthrough for a colleague, a bug you want to demonstrate, a short lesson with your voice over a slide deck, or a clip of one browser tab. The round camera bubble puts your face in the corner of a tutorial, and region selection keeps a crowded desktop from distracting viewers.

When not to use it

Skip it on phones and tablets, where browsers do not offer screen capture; the recorder built into the device is the right choice there. It also suits long sessions badly, because the whole clip sits in the page until you save it. If you need cuts, captions or several tracks, record here and finish the clip in a video editor.

Tips for best results

Decide about narration before pressing Start Recording, since audio cannot be added to a clip afterwards. Switching the camera bubble on asks for camera access straight away and shows a round preview, so a blocked camera shows up before you are mid-take. A selected region is redrawn frame by frame, which asks more of an older computer than a full capture. Links under the finished player lead to trimming, GIF and compression tools.

Limitations

The file type depends on the browser: MP4 with H.264 and AAC where the browser can record it, otherwise WebM. Computer sound is captured only when your browser and operating system offer it in the sharing dialog, and tab, window and screen options differ between browsers. Sessions past 30 minutes bring up a reminder to save, and a file over 200 MB gets a size warning. Closing the page before downloading discards the recording.

Privacy

The screen, microphone and camera streams are mixed and encoded by your browser on your own device, and the code never sends the video anywhere. The finished recording lives in the page's memory only until you press Download Recording. Screen sharing, microphone and camera each need your explicit permission, and your browser shows its own indicator while capturing. Stopping, or leaving the page, releases all of them.