How do I download a YouTube video as MP3?

Select 'MP3 Audio', paste the YouTube URL, click Fetch, then Download. The audio file saves to your device.

Can I download a full YouTube playlist?

Yes. Paste the playlist URL (youtube.com/playlist?list=…). Enter a free YouTube Data API v3 key to load the track list, select which videos to download, then click Download Selected.

Does this work without installing anything?

Yes — it runs entirely in your browser. The backend is a self-hosted cobalt instance deployed on your own server via deploy.sh. No third-party services are used.

📥 YouTube to MP3 / MP4

Download videos as MP4 or audio as MP3 — single videos and full playlists with batch download.

About YouTube Downloader

Want to save a YouTube video for offline viewing, or extract just the audio as an MP3 to listen on the go? Paste the video URL, choose whether you want the full MP4 video or audio-only MP3, and download it directly. Playlist support lets you queue up an entire playlist for batch download — handy for saving a full course, album, or video series at once.

This connects to a backend server that handles the download and sends the file back to you, so it works without any browser extensions or software installs. Great for saving educational content, lectures, music, and tutorials for offline access. Please only download content you have the right to use — respect copyright and the platform's terms of service.

🔧 Under Maintenance

YouTube download is currently under maintenance. We will fix it in the future.

Format

⚡ cobalt — self-hosted cobalt server. MP4 up to 1080p + MP3.

YouTube URL

Video quality

⚙️ Advanced — server URL

⚡ cobalt server URL

Default: /yt-api/ — your self-hosted cobalt instance (deployed by deploy.sh step 1, proxied via nginx). Change only if running cobalt on a custom port or path.

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