How to Generate Animated Captions for YouTube Shorts Online
By the Caption Plug team · Published August 1, 2026 · 6 min read
For YouTube Shorts, use two caption layers for two different jobs: burned-in animated captions for visual retention, and YouTube's subtitle track for accessibility and text understanding. Generate the visual layer on one short for free in the Caption Plug web studio, then review YouTube's transcript after upload.
Build the animated caption master
- Use the final 9:16 cut, no longer than 60 seconds for the browser studio.
- Generate word-level captions and proof every proper noun.
- Choose 2-4 word groups and an active-word animation.
- Keep text clear of the lower controls and right-side action rail.
- Export a clean MP4 and upload it directly to YouTube.
Why add a subtitle track too?
Burned-in text cannot be turned off, resized by the viewer, or translated as a separate track. YouTube's captions can support those accessibility features and give the platform a clean text representation of the speech. After upload, review the automatic transcript or provide a corrected subtitle file when the workflow allows it.
Caption settings for Shorts
| Element | Recommended starting point |
|---|---|
| Group length | 2-4 words, shorter for fast speech |
| Font | Heavy sans or display face with a dark stroke |
| Accent | One high-contrast active-word colour |
| Position | Lower-middle, away from title and action controls |
| Opening | First readable caption lands with the spoken hook |
Write for the loop
Trim the final caption so it ends exactly with the point, not one second later on a silent frame. A clean ending can loop back into the opening without an obvious pause. Do not leave a caption hanging after the audio or cut away before the last highlighted word finishes.
Archive the clean export
Store the captioned master outside the phone's temporary download area and name it clearly. If the Short later needs a correction, restore the local studio project by choosing the same source clip, make the edit, and export again without using another credit.
Quick answers
Should YouTube Shorts have burned-in captions and YouTube subtitles?
When practical, use both. Burned-in animated captions deliver the visual edit. YouTube's separate subtitle track can support accessibility, viewer controls, translation, and a clean text representation of the speech.
How many words should a YouTube Short show at once?
Start with 2-4 words. Use shorter groups for fast speech and keep names or fixed phrases together. The first readable caption should land with the spoken hook, not several seconds later.