Screen Recorder Online Free — Record Browser Tab or Full Screen
Modern browsers ship with a built-in screen capture API that lets you record your screen without installing any software. The Screen Recorder on this site wraps that API into a clean interface with pause/resume, microphone mixing, and one-click download. This guide explains how it works and when to use each capture mode.
How Browser Screen Recording Works
The tool uses two browser APIs that require no plugins or extensions:
- Screen Capture API (
getDisplayMedia) — prompts the user to choose a screen, window, or tab to share. Returns a video stream of whatever is selected. - MediaRecorder API — records a media stream as a series of data chunks, assembling them into a downloadable file when recording stops.
The entire recording happens in memory. No frames are sent to a server. When you click download, the browser creates a Blob URL pointing to the assembled recording and triggers a local file save.
Capture Mode Comparison
When you start recording, the browser shows a dialog with three modes. Choosing the right one matters:
| Mode | What it captures | Audio | Best for |
|---|---|---|---|
| Browser tab | One specific tab, including page content | Tab audio (Chrome only, opt-in) | Web demos, tutorials, presentations in the browser |
| Window | One application window | Varies by OS and browser | Recording a specific desktop app without showing everything else |
| Full screen | Entire monitor including taskbar | System audio (Windows/Chrome, opt-in) | Walkthroughs spanning multiple apps, game recording |
For most use cases — recording a tool demonstration, a video call, or a web page walkthrough —Browser tab mode is the cleanest option. It isolates exactly what matters and prevents notifications, other windows, or the desktop from appearing in the recording.
How to Record Your Screen
- Open the tool. Go to the Screen Recorder. Use Chrome, Edge, or Firefox — Safari is not supported.
- Choose audio options. Check "Include microphone audio" if you want to narrate while recording. Tab audio in Chrome is captured separately during the sharing dialog.
- Click Start Recording. The browser shows a dialog. Select the tab, window, or screen you want to capture and click Share (or Allow).
- Record. The timer counts up. Use Pause to freeze the recording during breaks. Resume picks up exactly where you left off.
- Stop and download. Click "Stop & Save". A video player appears — review the recording, then download it as a WebM file.
Audio Capture — The Full Picture
Audio capture in screen recording varies significantly by browser and operating system:
| Audio source | Chrome (Windows) | Chrome (Mac) | Firefox |
|---|---|---|---|
| Tab audio | Yes (opt-in in dialog) | Yes (opt-in in dialog) | Limited |
| System audio | Yes (full screen/window, opt-in) | No (macOS restriction) | No |
| Microphone | Yes (via this tool's option) | Yes | Yes |
If you need system-wide audio on Mac, use dedicated software like OBS (free) or QuickTime's built-in screen recording. For browser tab audio on all platforms, Chrome's tab recording with "Share tab audio" is the most reliable option.
Working with WebM Files
The output is a WebM file — the format browsers produce natively with MediaRecorder. It uses VP8 or VP9 video compression and Opus audio. WebM plays in:
- Chrome, Firefox, Edge (built-in)
- VLC (free, cross-platform)
- Most modern video editors (DaVinci Resolve, Kdenlive, Shotcut)
It does not play in Windows Media Player or older QuickTime versions. To convert WebM to MP4 for maximum compatibility, use HandBrake (free, open-source) — drag the WebM file in, select H.264 MP4 preset, and export.
Advanced Tips
Use a dedicated browser profile for recordings
If you record tutorials or product demos, create a separate Chrome profile with no bookmarks, extensions, or personal data. This keeps recordings clean and avoids accidentally exposing personal information in the browser UI.
Zoom your browser before recording
Press Ctrl+ (or Cmd+ on Mac) to increase the browser zoom to 125% before recording. Text and UI elements appear larger and are easier to read in the video — especially helpful for tutorial recordings viewed on smaller screens.
Extract audio from recordings
If you recorded a lecture or meeting and only need the audio track, download the WebM file and convert it using the MP4 to MP3 Converter on this site — it accepts WebM files in addition to MP4.
Transcribe your recording
After downloading, upload the audio to a transcription service or use the Speech to Text tool to generate a text transcript of the recording. This is useful for meeting notes, lecture summaries, or accessibility captions.
Record Your Screen Now
No install, no extension, no upload. Works in Chrome, Edge, and Firefox.
Open Screen Recorder