Audio to VTT Converter

Web-native .vtt captions generated from any song or audio.

Free to use. Works with MP3 uploads, AI-generated tracks, and supported song links.

What this does

WebVTT is the caption format the web speaks natively — HTML5 video players load .vtt files directly with the <track> tag. Karaoke.io generates VTT cues from the actual vocal timing of your track, giving web players and streaming setups accurate, styled captions without manual transcription.

How it works

1Upload an MP3 or paste a supported song link — or generate an original song right here with AI.

2Whisper speech recognition transcribes the vocal and times every line and word against the actual audio.

3Preview the sync in the karaoke player, then download your file — plus every other format from the same result.

FAQ

VTT or SRT — which do I need?

For websites and HTML5 players, VTT. For video editors and YouTube uploads, SRT. Karaoke.io generates both from the same AI timing.

Does VTT support styling?

Yes — VTT supports positioning and styling cues that SRT does not, which suits web karaoke and lyric displays.

Is the generator free?

Yes — upload or link a song and download the VTT for free.

All Karaoke.io tools

📄 LRC Generator 🔤 Word-Level LRC 🎬 SRT Subtitles ✨ Karaoke ASS Effects 📝 Lyrics From Audio 🎚️ AI Song Remix

🎥 Want the full music video?

The same song can become a complete AI music video — storyboarded scenes, consistent characters, synced lyrics on screen, final MP4 — on AIMusicVideo.com.