Time words to the voice
Viewers read ahead, so captions should arrive with the spoken phrase and clear before the next thought. Word-level timing is especially useful for short, energetic narration.
Use emphasis sparingly
Highlight only the word or phrase that carries the beat. If every word changes color or scale, nothing feels important and the captions become tiring to follow.
Protect the safe area
Keep subtitles away from platform controls and the bottom edge. A centered block with a consistent margin survives different crops and device sizes better than edge-to-edge text.
Design for sound-off viewing
High contrast, a readable font, and a subtle background box matter more than decorative effects. Preview the result at phone size before publishing.
Check names, numbers, and punctuation
Check names, numbers and punctuation in the script before you render. In Fewral the captions come from your script text, so fixing it there fixes the AI voice and the captions together. If you use Upload Audio, check your recording and its matching text before rendering.