Features

Everything CaptionFit does

Thirteen features, one browser tab: from a raw MP3 or a Suno link to a captioned, karaoke-highlighted lyric video with AI scenes, in the language you choose.

Start captioning — no credit card

Captions

Automatic captionsTimed, editable captions in nearly 100 languages Lyrics & script syncPaste your words, they snap to the audio Karaoke captionsEach word lights up as it is sung Word-by-word captionsOne word on screen at a time, as it is sung Caption stylesDozens of fonts or your own, colors and position

Scenes & visuals

AI cover imagesFrom a prompt, or from your captions in one click AI video backgrounds4–15 second clips with a seamless loop Scene timelineUp to 50 covers along one song Audio visualizerMoves with the beat, the bass and the voice

In and out

Song link importPaste a Suno, Udio or Songer link Translate subtitles101 languages, timing kept exactly Subtitle filesSRT, WebVTT, TTML and styled ASS Video exportCaptioned MP4 in 16:9, 9:16 or 1:1

Also included

Auto-detect language
Uploads up to 500 MB
SET timecodes from the player
Undo and redo
Projects save automatically
Upload your own SRT
Partial export with audio fades
Google or email-code sign-in
Installable web app
Clean exports on paid plans

Everything CaptionFit does

Captions

Scenes & visuals

In and out

Also included

Pages for how you work

Try every feature on the free plan.