How to use
- Choose whether to record tab or system audio and your microphone.
- Click Start recording and pick a screen, window or tab in the browser's dialog.
- Pause and resume as needed; click Stop, or use the browser's own Stop sharing button.
- Preview the recording and download it.
Options explained
- What you can record
- A whole screen, a single window or one browser tab. Recording a tab gives the sharpest result and lets you include that tab's sound.
- Sound
- Tab audio works in Chrome and Edge; system audio for a whole screen is available on Windows and ChromeOS. Your microphone can be mixed in on any system.
- Format
- MP4 where the browser supports it (recent Chrome, Edge and Safari), otherwise WebM.
What the recorder asks the browser for
The recorder requests video at 30 frames per second. It does not set a bitrate, so the browser decides the quality and file size. The file type is the first of these that your browser can record, in this order:
| Order | Type |
|---|---|
| 1 | MP4 with H.264 video and AAC audio |
| 2 | MP4 (browser’s choice of codecs) |
| 3 | WebM with VP9 video and Opus audio |
| 4 | WebM with VP8 video and Opus audio |
| 5 | Any WebM |
Browsers that record WebM write a file without a duration in it, so some players cannot jump to a position in the video. The page shows a note when that is your result; Chrome, Firefox and VLC play such files normally.
If you tick both “Record tab or system audio” and “Record my microphone”, the two sources are mixed into a single audio track before recording, because the browser’s recorder keeps only one. The “Reduce echo and background noise” option appears when the microphone is on. It switches the browser’s echo cancellation, noise suppression and automatic gain control on or off together, and applies to the microphone only, never to the shared screen’s sound. Turn it off if you are recording music or want the raw level.
Pressing the browser’s own Stop sharing button ends the recording in the same way as Stop.
Frequently asked questions
Is there a time limit or watermark?
No. The only limit is your device's memory, since the video is kept in the browser until you download it.
Can I record on my phone?
Not in a web page. Phone browsers do not let websites capture the screen; use the built-in screen recorder instead.
Why is there no sound from my computer?
Make sure the audio option was on and that you ticked "Share audio" in the browser's dialog. On macOS most browsers can capture a tab's audio but not the whole system's.
Is my recording uploaded?
No. It is recorded and stored on your device, and nothing is sent to a server.
Privacy
This tool runs entirely in your browser. Your files and text are processed on your device and are never uploaded to our servers.