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GivenTool

Record your screen online

Record your screen, a window or a tab with system audio, microphone and an optional webcam bubble.

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Show a bug to a developer, record a walkthrough for a colleague or capture a slide presentation with your voice, without installing anything. This recorder uses the browser's own screen-sharing dialog (getDisplayMedia), so you choose exactly what is captured: the whole screen, a single window or one browser tab.

You can add the tab or system audio (Chrome and Edge), your microphone (mixed with the shared audio using the Web Audio API) and a round webcam bubble in a corner, drawn into the video on a canvas. The browser's MediaRecorder writes the video as WebM (VP9 or VP8, depending on the browser) or MP4 in Safari. There is no watermark and no time limit other than your device's memory, and the recording never leaves your computer: it is kept in this tab until you download it. If a site or player needs MP4, the optional conversion re-encodes it to H.264 with FFmpeg, also locally.

Screen recording from a web page needs a desktop browser. Chrome and Edge support every option; Firefox records the screen and microphone but not system audio; Safari support is limited. Phones and tablets generally cannot screen-record from a browser, so use the built-in recorder of iOS or Android there.

How to use it

  1. Choose the options: system or tab audio, microphone, webcam bubble and quality.
  2. Click Start recording and pick the screen, window or tab in the browser dialog. In Chrome, tick "Share tab audio" or "Share system audio" if you want the sound.
  3. Pause and resume as needed; the timer shows the recorded length. Click Stop, or use the browser's "Stop sharing" button.
  4. Preview the recording and download it as WebM, or convert it to MP4 first for maximum compatibility.

Frequently asked questions

Is the recording uploaded to a server?

No. The video is recorded by your browser and stays in this tab's memory until you download it. Converting to MP4 also runs on your device with FFmpeg in WebAssembly.

Why is there no sound in my recording?

System audio has to be shared explicitly: in Chrome and Edge tick "Share tab audio" (for a tab) or "Share system audio" (for the entire screen on Windows and ChromeOS) in the sharing dialog. macOS only allows tab audio. Firefox and Safari cannot capture system audio, so use the microphone option instead.

Can I record my screen on an iPhone or Android phone?

Not from a web page: mobile browsers do not support screen capture. Use the built-in screen recorder instead (Control Centre on iPhone, Quick Settings on Android), then trim or compress the result with the tools here.

How long can I record?

There is no fixed limit, but the recording is held in memory until you download it. At the standard quality an hour is roughly 1 GB, so for long sessions download regularly or choose Standard quality.

Why does the WebM file not play in some apps?

WebM (VP8/VP9) plays in every modern browser, VLC and most editors, but QuickTime, some Windows apps and many upload forms expect MP4. Use Convert to MP4 before downloading.

Why does the webcam bubble freeze when I switch tabs?

Browsers slow down hidden tabs. The bubble is drawn by this page, so keep the recorder tab visible (for example in a separate window) while recording with the webcam. Recordings without the bubble are not affected.

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