Drop in an MP3 or an MP4, pick a language or leave it on Auto-detect, and CaptionFit returns a timed transcript you can edit line by line.
Pick from 98 transcription languages, or leave the field on Auto-detect and CaptionFit identifies the language for you.
Every caption has an editable Start and End. Press SET to take the exact time from the player; neighbouring lines snap so nothing overlaps.
A slider from 10 to 120 characters decides how long each caption runs, or choose Auto and let CaptionFit split lines naturally.
Preview scrolls with the player and jumps when you click a line. Edit turns each row into a form with insert and delete.
Edits save moments after you stop typing. Saving also re-aligns word timings so karaoke highlighting stays exact.
Already have subtitles? Upload the SRT and skip transcription entirely.
Auto captioning is where every CaptionFit project starts. The transcript is not a black box: every word, start time and end time is yours to change in the browser, and the export uses exactly what you see. That matters for songs, podcasts and lectures alike, where one mis-heard name can undo an otherwise perfect track.
If the audio is a song or a scripted piece, paste the words you already have and let lyrics sync snap them to the audio instead of correcting a transcript by hand. When the captions are right, download subtitle files for editing tools and platforms, or turn on karaoke highlighting before you export.
See how podcasters and YouTubers use automatic captions week after week.