What is call to action (cta)?

Call to action (CTA): A call to action (CTA) is a direct prompt in a short-form video or caption asking viewers to do something specific—follow, comment, share, save, or watch another video. CTAs convert passive viewers into engaged ones, turning watch time into signals like comments and shares that platforms use when deciding distribution.

Why CTAs matter for reach

Comments, shares, saves, and follows are engagement signals platforms factor into distribution, and viewers do these things more often when asked. A specific CTA turns someone who enjoyed the video into someone who acted on it—and actions are what feeds can measure. The caveat: a CTA multiplies interest that already exists. It can't manufacture engagement a weak video didn't earn.

How to write CTAs that get acted on

One CTA per video. Asking for a follow, a comment, a share, and a save at once means nobody does any of them.
Match the CTA to the content. "Save this for your next edit" fits a tutorial; "comment your niche and I'll reply" fits advice content.
Make it low-friction and specific. "Comment 'GUIDE'" tends to get more replies than "let me know what you think."
Deliver it verbally and in a text overlay, and don't save it for the final second—many viewers never reach the end.

Common misconception: CTAs are begging and hurt your credibility. Delivered confidently and tied to real value, a CTA is just clear communication. The line you don't want to cross is comment bait—manipulative prompts designed purely to farm engagement, which platforms discourage and audiences resent.

See these signals scored on your own video

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Related terms

Browse the full creator glossary, read the growth guides, or try the free virality score checker.