Social Media Captions: A Writing and Review Checklist

A good caption does a small job well: it tells the reader what the post is about, gives them a reason to care and tells them what to do next. Whether you write captions by hand or start from an AI draft, the same checks apply. This guide gives a simple structure, a review checklist and notes on disclosure and accessibility.

Start with the reader

Before writing, answer three questions:

1. Who is this for? A new customer, a returning one, a fellow professional?
2. What do they want? An answer, a laugh, a reminder, an offer?
3. What should they do next? Read, reply, save, click, visit.

If you cannot answer the third, you may not need the post.

A simple caption structure

1. Hook (the first line). Many feeds cut off captions after a line or two, so put the point first. A question, a specific problem or a clear statement works better than "Hi everyone!".
2. Body (one idea). Give one useful point, with one example. Cut anything that does not support it.
3. Call to action. One request: "Reply with your question", "Save this for later", "Read the full guide."
4. Hashtags and tags. Add a small number of relevant ones, at the end.

Hook examples:

• A question: "Do you reschedule your whole week every Monday?"
• A tip: "One change that makes captions easier to read."
• A fact you can back up: only use numbers you have checked.

Match the platform

Platforms differ in length, tone and format. Check each platform's current limits and features before you schedule, because they change. In general:

• Short, direct platforms reward a clear point and a quick link.
• Professional networks suit longer, practical posts in a plain voice.
• Visual platforms lean on the image, with the caption adding context.
• Link-based feeds: if links are a problem on one platform, put the link in the place it supports rather than breaking its rules.

Rewrite for each platform instead of pasting the same text everywhere.

Voice and tone

Write the way you speak to a customer. Avoid jargon and hype. If you would not say it out loud, simplify it. Keep a short style note with your tone, words you like and words to avoid, so posts stay consistent, especially if several people or tools write for the brand.

Hashtags and emojis

• Use a few relevant hashtags rather than a long list.
• Write multi-word hashtags with capital letters for each word (#SmallBusinessTips), which makes them easier to read, including for screen-reader users.
• Use emojis sparingly. Screen readers read them out, so a long run of them is tiring to hear.
• Check any hashtag before you use it to make sure it does not mean something unwanted.

Make posts accessible

• Add alt text to images that describes what matters about them.
• Add captions to videos.
• Avoid putting key information only in an image.
• Keep sentences clear and short.

Disclose affiliate links and sponsorships

If you earn a commission or were given a product or payment for posting, the US Federal Trade Commission expects a clear and conspicuous disclosure close to the claim. Do not bury it among hashtags or hide it behind a "more" link. Use plain words such as "affiliate link" or "I earn a commission", or the platform's paid-partnership tool where it offers one. Other countries have their own rules, and platforms add theirs, so check them.

Never imply you are a neutral party if you earn from a link, and never make claims about a product you cannot support.

Using AI to draft captions

AI writing tools can speed up first drafts, and some can suggest hashtags, but a draft is only a starting point. Always:

• Check facts, names, dates and numbers.
• Remove generic filler and claims that sound too good.
• Make it sound like you.
• Check that it fits the platform and the audience.
• Read it aloud once.

You are responsible for what you publish, whoever or whatever wrote the first draft.

Review checklist before scheduling

• Does the first line tell the reader what the post is about?
• Is there one idea and one call to action?
• Are all facts, numbers and names checked?
• Does the tone sound like you, with no hype?
• Are hashtags relevant, few and capitalized?
• Does the image have alt text, and does the video have captions?
• Is any affiliate link or sponsorship clearly disclosed, near the link?
• Does it follow the platform's rules?
• Is the link correct, and have you opened it?
• Do you have time to reply to comments after it goes live?

Common mistakes

• Burying the point under a long intro.
• Several calls to action in one post.
• Too many hashtags.
• Copying the same text to every platform.
• Posting and disappearing instead of replying.
• Unclear or missing disclosure.
• Not proofreading.

Keep a swipe file

Save captions that worked, whether yours or others' (for structure, not to copy), and notes on what you changed. After a month, look at which posts got replies, saves or clicks and write more like them.

Where a scheduling tool can fit

A scheduler saves time once you know what to say. AI Social Poster (affiliate link) is one option. According to the vendor, you enter keywords and it writes a draft, which you can adjust and schedule to platforms the vendor lists as Facebook Pages, LinkedIn, Pinterest, Instagram business or creator accounts, Threads, Bluesky, Mastodon and WordPress, with hashtag and emoji suggestions and AI image generation. I have not used it. Plans, pricing and features vary by tier, so check the order page, and AI-written posts still need your review. See our notes on who it suits.

Disclosure: I earn a commission if you buy through links in this post, at no extra cost to you.