Ratproof — A Transcriber That Refuses to Rat

Field notes

Ratproof describes a local-browser workflow rather than a conventional upload-and-process transcription service. Its stated input list includes MP3, WAV, M4A, OGG, FLAC, and WebM; output can be exported as text, Markdown, SRT, VTT, or JSON. The page also describes timestamped lines that jump back to the audio and optional summaries when a browser supplies its own language model. Its measurements include a 27.4% word error rate on overlapping meeting audio and roughly 87% agreement with a human transcript.