The carousel can stay the same. The first line cannot. Instagram, TikTok, YouTube, and a Facebook Page reward different openings, lengths, and asks — but they do not need four different arguments.
If you rewrite the thesis for each network, you will post less. If you paste the same caption everywhere, you will sound like a crosspost. The middle path is a shared spine plus a wrapper.
One spine
Before you touch a caption field, write four bullets that do not care which app you are in:
- The hook in spoken language
- The distinction (what people get wrong)
- The proof or example
- The single next step
Those four bullets are the campaign. Everything else is formatting.
Wrappers that actually differ
Instagram — first line must work as a preview. Hashtags at the end, not in the first sentence. A save or share ask is enough; “link in bio” is a habit, not a strategy.
TikTok — write like you are talking over the video, even for a photo carousel. Shorter. More concrete. The caption is secondary to the first on-screen line, but a lazy caption still tanks search.
YouTube Shorts — title is a search query, not a joke. The description can carry the context Instagram would put below the fold. Say the topic in the words people type.
Facebook Page — slightly more complete sentences. People still read. You can afford a second line of context. Skip the hashtag pile.
You should feel the difference in the first 80 characters. You should not feel a different product.
Hashtags and hooks are not the same job
Hashtags help a few discovery surfaces. They do not fix a caption that starts with “Excited to announce.” Put the claim first. If you use tags, keep a small, relevant set — not a copied block from 2019.
The on-image headline and the caption hook should rhyme, not duplicate. If the slide already says the line, the caption can add why it matters.
Generate the wrappers, then spend your taste on the first line
The expensive part used to be typing four versions. The expensive part now is choosing the first line. Draft the set from the slides, then rewrite only the openings until they sound like the account.
SlidePress stores those captions with the campaign so you can edit one field and post, instead of keeping a Notes app graveyard per platform.
Start free at slidepress.co.