Writing captions that do work

The caption is where casual viewers become customers. A structural approach that works across platforms.

5 min read

Captions are where the commercial work happens. The image stops the scroll; the caption decides whether someone DMs you, clicks the link, or follows you. Most small businesses waste captions on decoration ("What a beautiful day at work!"). A better pattern:

The HOOK → VALUE → CTA structure

Line 1: Hook (≤10 words)

A hook that earns the next click-to-expand. On most platforms, only the first line is shown in the feed — the rest is hidden behind a "more" tap. If the first line doesn't earn that tap, the rest might as well not exist.

See the "Writing hooks" article. Contrarian take, specific number, curiosity gap, bold claim — any of these work.

Body: Value (3–8 sentences)

Pay off what the hook promised. If the hook said "three things that kill conversion on a local business site," the body needs to deliver three things. Keep sentences short. One idea per sentence. Use line breaks liberally — walls of text kill reads.

Last line: Call to action

Exactly one. "DM us 'template' and we'll send it." "Link in bio." "Comment YES if you want the follow-up." Multiple CTAs dilute each other; pick the single most important action.

Platform-specific caption tips

  • Instagram: 125 chars before the cutoff. First line has to earn the "more" click. Hashtags at the bottom, 3–5.
  • LinkedIn: 210 chars before cutoff. More generous length is rewarded. 1,000–2,000 chars often outperform short.
  • X/Threads: Short or threaded. A single strong sentence beats a medium-long one.
  • TikTok: Most people don't read captions. Spoken/on-screen text matters far more. Caption should be short and searchable.
  • Facebook: Similar to Instagram. Medium-length is fine; link in a first comment tends to get more reach than in the post body.
  • Nextdoor: No hashtags. Slightly longer is okay if the tone is neighborly. Start with your name and context.

Five caption patterns that consistently work

  • The story: "Last Tuesday a customer walked in and… Here's what happened."
  • The list: "Three things nobody told me about [x]."
  • The confession: "I spent three years doing [x] wrong. Here's what I do now."
  • The prediction: "Six months from now, every [x] will be doing this. Here's why."
  • The contrarian view: "Everyone says [X]. I think they're wrong."
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