How to record your screen online

Need to capture a demo, a bug, a call or a tutorial? Here is how to record your screen — a whole display, a single window, or one browser tab, with audio — right in your browser, with no app to install and nothing uploaded.

Most screen recorders want you to download software or sign up. You do not need to. Modern browsers can capture your screen on their own, and the Screen Recorder turns that into a simple start/stop recorder that saves the video straight to your device. Nothing is uploaded, so it is safe for work demos and anything private.

Before you start

• Works in: Chrome, Edge and other Chromium browsers give the most options (including tab audio). It needs a secure page, which this is.
• You choose the source: your entire screen, a specific application window, or a single browser tab — the browser's own picker asks you which when you start.
• Format out: an MP4 where your browser supports recording it, otherwise WebM. Both play in modern browsers.
• No forced time limit. The recording is held in your browser as it captures, so very long sessions use more memory — fine for most clips, heavier for hour-long captures.
• It is local. The capture and the saved file stay on your device. Nothing is sent anywhere and there is no watermark.

Record your screen in 4 steps

1. Open the Screen Recorder. Go to the Screen Recorder and click record.
2. Pick what to share. Your browser shows a picker — choose Entire screen, a Window, or a Chrome tab. If you are recording something with sound, tick Share tab audio (or system audio, where your browser allows it) before you confirm.
3. Do your thing, then stop. The recording runs while you demo, present or reproduce a bug. Click stop — or use the browser's "Stop sharing" bar — when you are done.
4. Preview and download. Check the result and save it. If you got a WebM and need an MP4, convert it in a click with WebM to MP4.

Capturing audio the right way

Screen video is easy; the audio is where people trip up, because there are three separate sources. Your microphone records your voice. A tab's audio is the sound playing inside one browser tab. System audio is everything your computer plays. Picking a single Chrome or Edge tab and ticking "Share tab audio" is the most reliable way to capture in-app sound, and it keeps other apps out of the mix. Microphone narration can be layered in where your browser supports it. Whole-screen system audio is the least consistent — it depends on your browser and operating system — so if you need the computer's own sound, prefer the tab route whenever you can.

Best settings for common jobs

Software demo or tutorial

Record the specific window or tab so nothing else leaks into frame. Add your microphone if you are narrating; capture tab audio if the app makes sounds that matter.

Reporting a bug

Record the tab where the bug happens, reproduce it once slowly, and stop. A short, focused clip is far more useful to a developer than a long screen capture.

Capturing a call or a video

Choose the tab, enable its audio, and keep the tab in the foreground. Note that some sites restrict capturing their content — record only what you have the right to.

Troubleshooting

• No audio in the recording. You likely did not tick Share tab audio (or system audio) in the picker. Start again and enable it before confirming. Whole-screen system audio is not available in every browser/OS.
• The recording is huge. Long, high-resolution captures are large. Trim it with the Video Cutter and shrink it with the Video Compressor afterwards.
• The picker did not appear. Screen capture needs a secure connection and a browser that supports it — use an up-to-date Chrome or Edge.
• I need an MP4, not a WebM. Run the file through WebM to MP4 — also local and free.

Is it private?

Yes. Your browser does the capturing, and the video is saved to your own device. It is never uploaded to a server, there is no account, and the output has no watermark — so a private demo or an internal walkthrough stays yours.

After you record

Recordings often need a quick tidy-up. Cut the dead time at the start with the Remove Parts from Video tool (it can even auto-detect the quiet gaps), trim the ends with the Video Cutter, or make a shareable GIF of a short moment.

Related TrackMix tools

To record yourself instead of your screen, use the Webcam Recorder. To convert a WebM recording, use WebM to MP4. To clean up the result, use Remove Parts from Video or the Video Cutter.

Frequently asked questions