FastMP3

Convert YouTube videos and playlists to audio files from your browser.

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Features

• Download as MP3, M4A, OGG, or WAV up to 320 kbps
• Playlist support with ZIP output
• Batch download multiple URLs at once
• 30-second audio preview before downloading
• ID3 metadata editor
• Download history stored locally in the browser
• Auto-cleans video titles for filenames
• File size estimates per format and quality
• PWA — installable, works as a mobile share target

Requirements

• Node.js 25.7.0
• yt-dlp
• ffmpeg

Setup

git clone https://github.com/Dany0443/mp3
cd mp3
npm install
node server.js

Open http://localhost:3556 in your browser.

Notes

• For personal use only. Respect copyright laws.
• Files expire from the server after 1 hour.
• Download history is saved only in your browser's local storage.
• If downloads fail with a 403, run yt-dlp -U to update.

License

MIT