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Voice-tracked teleprompter using on-device ASR in the browser

Voice-tracked teleprompter using on-device ASR in the browser

Mar 15, 2026 Developer Tools

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Voice-tracked teleprompter using on-device ASR in the browser

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I built a teleprompter that scrolls based on your voice instead of a timer.Paste a script, press record, and it highlights the current word as you speak. If you pause it waits; if you skip lines it finds its place again.Everything runs entirely in the browser — speech recognition (Moonshine ONNX), VAD, and fuzzy script matching.Demo: https://larsbaunwall.github.io/promptme-aiMost of the project was initially built using Perplexity Computer, which made for an interesting agentic coding workflow.Curious what people think about the script alignment approach.

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