Why convert YouTube to WebM format?
WebM (VP9/AV1) is an open, royalty-free media container designed for web playback in browsers like Chrome, Firefox, and Opera. WebM often delivers superior video compression at smaller file sizes.
WebM Video Converter
YouTube to WebM
Download YouTube videos as WebM format in your browser. Free, no software installation required.
Guest: up to 1080p
MP4 · WebM · MP3 · AAC · WAV
Preparing session…
Enter a video or playlist URL to begin.
At a glance
Guest and registered limits for formats, quality, and recovery. Compare Guest and Registered.
- Install required
- No — runs in the browser
- Guest quality limit
- Up to 1080p (no account needed)
- Registered quality limit
- Up to 2160p (4K)
- Playlist features
- Playlist analyzer, video selection, and bulk download
- Supported formats
- Video: MP4 and WebM · Audio: MP3, AAC, and WAV
- If you refresh
- Downloads continue on the server; recover completed files from History
- Account required
- Not required for guest downloads up to 1080p
- Responsible use
- Only download content you are authorized to download — see Terms
| Feature | Details |
|---|---|
| Install required | No — runs in the browser |
| Guest quality limit | Up to 1080p (no account needed) |
| Registered quality limit | Up to 2160p (4K) |
| Playlist features | Playlist analyzer, video selection, and bulk download |
| Supported formats | Video: MP4 and WebM · Audio: MP3, AAC, and WAV |
| If you refresh | Downloads continue on the server; recover completed files from History |
| Account required | Not required for guest downloads up to 1080p |
| Responsible use | Only download content you are authorized to download — see Terms |
WebM FAQs
Can I convert WebM videos back to MP4?
Yes. PulseDL supports both WebM and MP4 video formats. You can choose your preferred output format before initiating the download.
Responsible use
Whether a download is permitted depends on the content, your rights to use it, the platform’s terms, and applicable law. Only download content you are authorized to download — for example your own uploads, material you have permission to save, Creative Commons content, or other uses allowed where you live. This is not legal advice. See Terms of Service and our Copyright page.