Captions for vertical video
Add Subtitles to TikTok Videos
Make dialogue readable on mute and keep captions paced for quick, mobile-first TikTok viewing.
Upload a video →MP4, MOV, and WebM · Short speech preview free · No account
What to check before exporting
For a vertical clip, keep captions clear of important on-screen details and check readability at phone size. Review short, fast phrases carefully before exporting; SUBZAP produces an MP4 you can upload to TikTok yourself.
Example
In a quick recipe clip, make sure captions do not cover the ingredient being demonstrated.