PolyCaption

TikTok captions that keep people watching

Most TikTok viewers scroll with the sound off. Upload your clip and PolyCaption adds bold, word-by-word captions sized for vertical video.

How it works

  1. Upload your TikTok video (9:16).
  2. Keep the Viral style or pick another one.
  3. Export the MP4 and upload it to TikTok.

Captions sized for the For You page

Text sits in the middle of the frame, above TikTok's buttons and description, and is split into two or three words at a time so it reads at a glance.

Word-by-word highlight

The word being spoken changes colour. This is the style top creators use, without editing each word by hand.

Fix words before you post

Brand names and slang are easy to correct in the editor. Changes show in the preview immediately.

FAQ

Does TikTok's own auto caption do the same?+

TikTok's captions are plain text that viewers can turn off. Burned-in captions always show, keep your style, and work when you repost the video to Reels or Shorts.

Will the export lower my video quality?+

The video is re-encoded once at the original resolution. Quality stays close to the original.