Online Screen Recorder

How it is calculated

This tool records whatever happens on your screen – for a how-to, a bug report for support, a presentation or a short explainer video. You need no software and no account. The browser supplies the picture through the getDisplayMedia() interface defined in the W3C Screen Capture specification, and its built-in MediaRecorder does the recording. The finished video sits only in your browser’s memory until you download it. Nothing is uploaded, not even to us.

How to record your screen

1. Choose audio: “System audio” captures the sound of your computer or of a tab (for example a video you play). “Microphone” records your voice. If you pick both, they are mixed into one audio track automatically.
2. Click “Start recording”. Your browser opens its own picker: entire screen, a single window or a browser tab. This prompt comes from the browser, not from this page – without your choice the page sees nothing.
3. Allow the microphone if needed. If you ticked “Microphone”, the browser asks separately.
4. Record. The timer runs; “Pause” interrupts the recording without ending it.
5. Stop with “Stop recording” or via the browser’s sharing bar (“Stop sharing”). Both give the same result.
6. Check and save: the preview plays the video, and “Download video” saves it with the date and time in the file name.

Which browsers and devices support it

The browser’s picker shows exactly what it offers: if there is no audio switch, this browser cannot deliver system audio for that source.

On a phone: use the built-in feature

Mobile browsers do not offer screen sharing to websites. Both major systems have their own recorder, though:

• iPhone/iPad: open Control Center and tap the record button. A long press lets you turn on the microphone. If the button is missing, add it under Settings → Control Center.
• Android: tap “Screen record” in Quick Settings (available since Android 11, named slightly differently by some manufacturers). Before starting you can choose whether to record audio.

MP4 or WebM?

The browser decides which formats it can record – this page automatically takes the best one on offer and prefers MP4, because it plays almost everywhere (Windows, Mac, phones, editors, messengers). Firefox and older Chrome versions produce WebM, which every modern browser, VLC and most video editors play.

Good to know: videos straight from a browser recorder sometimes lack the total length in their file data. Some players then show no duration or seek imprecisely. The video itself is complete; opening and saving it once in a video editor (or running it through a converter) fixes this.

Tips for good recordings

• Record a single window or tab if the rest is private: notifications, bookmarks and other windows stay out of the picture.
• Turn off notifications (Windows: Do not disturb, macOS: Focus) so no messages pop into the video.
• For tab audio, pick the tab you want and leave “Share tab audio” switched on in the picker.
• Use headphones with the microphone so system audio does not reach the mic a second time through your speakers (echo).
• Long recordings: the video grows in memory. For very long sessions, record in parts and download in between.

Common screen recording mistakes

• Sharing the whole screen by accident: notifications and other windows end up in the video. Pick a single window or tab instead.
• No sound on a Mac or in Firefox: system audio comes only from Chrome and Edge; on macOS usually only tab audio. Check the audio switch in the picker before you start.
• Echo with the microphone: speakers feed system audio into the mic a second time – use headphones.
• 60 fps for slides: 3,600 frames a minute instead of 900 at 15 fps makes the work heavier for no visible gain on static content.
• Reloading the tab: the recording lives in this tab’s memory; reloading or closing it before “Download video” loses the video.

Honest limits

• No editing, no webcam overlay, no click highlighting – this is a lean recorder. Trim the video afterwards in any editor.
• The recording belongs to this tab: closing or reloading the page while recording discards the video.
• Resolution and frame rate depend on your screen, browser and computer. For fast motion (games), dedicated software does better.
• Protected content (e.g. streaming services with copy protection) often appears black in the recording – the browser or operating system prevents it.

Want a short GIF from your recording? Use Video to GIF; to extract just the audio, use Video to MP3.

After recording: save the audio as a file with video to MP3, or turn a short part into an animation with video to GIF. Before you start, run the mic test, and check your camera with the webcam test.

Resolution, frame rate, format and countdown

The browser picks the bit rate itself, so file size depends on how much moves on screen: a still slide compresses far better than a scrolling web page. Doubling the frame rate doubles the frames to encode, and 1080p has 2.25 times the pixels of 720p.

Under “Quality and start” you decide how the recording is made: resolution same as the source, 1080p or 720p (the browser only ever scales down, never up) and a frame rate of 15, 30 or 60 frames per second – 15 keeps slide recordings small, 60 pays off for games and fast motion. The file format choice appears only if your browser can really record more than one format; only formats it confirms are offered. The countdown (3, 5 or 10 seconds) runs after you have picked what to share and gives you time to switch to the right window. This page sets no time limit and adds no watermark. Until you save it, the recording sits in your browser’s memory – so for very long recordings the free memory of your device is the limit. “New recording” releases that memory again.

Frequently asked questions

Sources and legal basis

• W3C – Screen Capture
• W3C – MediaStream Recording
• MDN Web Docs – MediaDevices.getDisplayMedia()
• MDN Web Docs – MediaRecorder
• MDN Web Docs – Using the Screen Capture API

As of: 27 September 2026 · Editorial policy