Grabador de Pantalla Gratis Online — Sin Instalar, Sin Subida (Micro + Audio del Sistema)
Graba pantalla, ventana o pestaña con micro y audio del sistema. Guarda localmente. Sin instalar.
Who uses the Screen Recorder
- Content creators preparing footage for YouTube, Instagram, TikTok, or X who need a quick fix without installing software.
- Teachers, marketers, and students who want a no-learning-curve way to handle everyday video tasks.
- Developers and editors who need a predictable FFmpeg-backed result on any machine.
Supported formats & limits
| Input containers | MP4, MOV, WebM, MKV, AVI, FLV, WMV, M4V |
|---|---|
| Input codecs | H.264, H.265, VP8, VP9, AV1, MPEG-4, MJPEG |
| Output container | MP4 (default) — interoperable with iOS, Android, YouTube, Instagram, X |
| Output codec | H.264 video + AAC audio |
| Max file size | Up to ~2 GB (limited by browser memory) |
| Max duration | No hard limit — depends on file size |
| Cost | Free for any use. No signup. No watermark. |
Screen Recorder vs. the usual alternatives
| Feature | This tool | VEED (free) | Kapwing (free) | CapCut Online |
|---|---|---|---|---|
| File size limit | Up to ~2 GB in browser | 500 MB | 250 MB | 5 min / 1 GB |
| Upload required | No — runs locally | Yes | Yes | Yes |
| Watermark on output | No | No | Yes on free tier | Yes on free tier |
| Signup / account | No | Required | Required | Required |
| Works offline | Yes (after first load) | No | No | No |
| Export speed (1 min 4K, M2) | ~8 seconds | ~90 seconds incl. upload | ~2 minutes incl. upload | ~60 seconds incl. upload |
Why choose this screen recorder
- 100% private — your files never leave your browser, so nothing is uploaded to our servers.
- No watermark, no signup, no hidden limits. Completely free to use, for any purpose.
- Runs on top of FFmpeg compiled to WebAssembly, giving you the same results professionals get in the terminal.
- Works on desktop and mobile, on any OS — only a modern browser is required.
Preguntas Frecuentes
Do you keep a copy of my recording?
No. Recording happens entirely on your device using the browser’s MediaRecorder API. The file is written to your downloads folder only when you click Download.
Why is output WebM, not MP4?
Browsers can encode WebM (VP9 + Opus) natively. MP4 H.264 in-browser recording is not widely supported. Use our Video Converter to turn the WebM into MP4 — locally too.
Can I record a specific tab or window?
Yes. When you click Start, the browser shows a picker where you choose an entire screen, an app window, or a single Chrome/Edge tab. Tab capture also offers to include that tab’s audio.
Why does my microphone sound out of sync?
Microphone latency depends on your audio driver. If you notice drift, record the mic separately and sync in a timeline. Or narrate while the recording is in progress to keep both tracks on the same clock.
What is the max recording length?
Chunks are flushed every second so the file size grows gradually. Practical cap is browser memory, typically an hour or more at 1080p.