Caption style previewer for short-form video

The majority of short-form viewing happens with the sound off or half-heard, which makes captions the primary reading surface of your video. Before a viewer processes a single frame, the caption treatment has already told them what kind of video this is: entertainment, tutorial, news, storytime.

That is why picking a caption style by imagination goes wrong - a style that looks bold in your head can read as noise on a real frame. This previewer puts your actual line on a video-shaped frame in six looks simultaneously, so the comparison takes seconds.

Big Bold is the high-energy default that made faceless channels famous: huge, heavy, unmissable. Karaoke Highlight lights each word as it is spoken and is the retention king for narrated stories. Neon Outline glows for gaming and tech. Minimal stays out of the way for talking heads and education. Meme Yellow is the classic viral-clip look with a hard outline. The Documentary Lower-Third anchors a strap at the bottom for news-style clips and interviews.

A style preview is static by nature - real captions have timing. In FrameCompose, every generated video ships with word-by-word captions synced to the AI voiceover: the transcription carries per-word timestamps, so karaoke highlights land exactly on the spoken word instead of approximating it.

And because the video lands on a real timeline, captions stay editable afterwards: fix a word, retime a line, restyle everything, without regenerating the video.