SuperDevTools
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Online screen recorder

Nothing is uploaded: access to your screen, microphone or camera is only requested when you click, everything is switched off when you stop, and the video stays on this page until you download it.

Click “Start recording”, then pick a tab, a window or your entire screen in the browser dialog.

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Space bar: start or stop. The browser's “Stop sharing” button also ends the recording.

With the webcam on, the picture is put together on this page: keep the window open, even behind another one. If it is minimized or the computer goes to sleep, some browsers slow the video down.

Record your screen straight from the browser

This online screen recorder captures a tab, a window or your entire screen on a computer, with no software to install and no account. Add the sound, your microphone and a small webcam bubble if you want, then download the video. No watermark.

Use it to record a tutorial for a relative, a product demo for a client, a clip showing the IT help desk where a bug happens, a narrated slide deck or a lesson for students.

How to record your screen

  1. Pick your options: “Tab or system audio”, “Add microphone”, “Webcam overlay” (round or square bubble, in any corner) and “3-second countdown”.
  2. Choose the “Quality (video bitrate)” and the “Format”. The estimated file size is shown below the settings.
  3. Click “Start recording”. The browser dialog opens: select a tab, a window or the entire screen. If the microphone or webcam is ticked, the browser also asks for access.
  4. After the 3, 2, 1 countdown, the timer runs and the current file size is displayed next to it. “Pause” holds the recording and “Resume” carries on; paused time is left out of the video.
  5. Click “Stop”, or the browser's own “Stop sharing” button. The video appears below: click “Download video”. The file name includes the date and time, for example screen-recording-2026-11-14-153012.webm.

The space bar also starts and stops recording.

About recording audio

Whether you can record the sound of what you show depends on the browser and the operating system. When sharing a tab, it is usually offered: look for a “Share tab audio” switch in the dialog. For the entire screen, support is more limited and varies from one system to another. If no sound is shared, the tool tells you and only records the microphone.

When both audio and microphone are ticked, they are mixed into a single audio track, so your voice and the sound of the video you are commenting on end up together in the file. Wear headphones so the microphone does not pick up your speakers.

File size and quality

File size mostly depends on the bitrate. With “Standard (2.5 Mbps)” and audio, the math is (2,500,000 + 128,000) × 60 ÷ 8 = 19,710,000 bytes, so roughly 20 MB per minute and 197 MB for 10 minutes. “Light (1 Mbps)” comes to about 8.5 MB per minute and “Very high (8 Mbps)” to about 61 MB. A screen that barely moves usually gives a smaller file. For readable text, “Standard” is enough.

Tips for a clean recording

  • Turn on Do Not Disturb and close chat apps: a private message popping up would end up in the video.
  • Share a tab or a window rather than the entire screen. You only show what matters and your other windows stay private.
  • With the webcam overlay, keep this page open, even behind another window. If it is minimized or the computer goes to sleep, some browsers slow the picture down.

WebM and MP4

The tool lists the formats your browser can produce: WebM (VP9 or VP8) almost everywhere, and MP4 (H.264) when available. WebM plays in browsers and most recent video players. MP4 is the safest choice for phones, editing software and video sharing platforms. If needed, a WebM file can be converted to MP4 with video conversion software.

Privacy and rights

Nothing is uploaded: the video is built in your browser and stays on this page until you download it. Access to your screen, microphone and camera is only requested when you click, and everything is switched off when you stop. On your side, do not record films, shows or other paid, copyrighted content, and tell people before capturing a video call: you need their consent.

FAQ

Can I record my screen on a phone?

Not with this tool: most phones and tablets do not let a website share the screen. A message explains this instead of showing the button.

Is there a time limit?

None, but the video stays in memory until you download it: beyond an hour, lower the bitrate.

Why does my video have no sound?

The audio switch was not turned on in the browser dialog, or the system does not offer audio for that source. Share a tab instead, or add the microphone.

What happens to the video if I close the page?

It is gone: nothing is stored on the site. Download it before closing; the browser reminds you if you forget.