One idea, five platforms

Cross-posting is not the problem. Cross-posting the same *text* is. The audience overlap between your Instagram followers and your LinkedIn connections is small; the cost of adapting one idea five ways is about ten minutes; and the difference between adapted and pasted is the difference between a channel that grows and one that looks like an RSS feed with a logo.

What follows is what actually changes per platform, and what does not change anywhere.

What never changes

• One idea per post. A post making three points makes none.
• The first line decides everything. On every platform, most people read it and nothing else.
• Specifics beat adjectives. A number, a name, a price, a duration.
• Say the thing before explaining it. Context first is how posts lose readers.
• A reason to respond — a question, a disagreement, an invitation — if you want comments rather than views.

Facebook: a complete thought

Facebook still rewards posts that can be read and understood without leaving. Three to six short paragraphs, written the way you would explain something to a customer standing in front of you. Stories work here better than anywhere else — a real situation, what happened, what you learned.

• Length: 80–200 words is the reliable band. Longer works when it is genuinely a story.
• Links suppress reach. If the link matters, put it in the first comment and say so in the post.
• Questions at the end genuinely work here, provided they are answerable in one line.
• Hashtags do almost nothing. Two at most, or none.

Instagram: the image is the post

The caption supports the visual, not the other way round. If the image does not stop the scroll, nothing you write will be read. That makes Instagram the platform where visual consistency pays the most: a recognisable look means people know it is you before they read a word.

• The first line is the whole caption for most viewers — everything after "more" is optional reading.
• Length: one strong line, or 50–150 words when the story adds something. Both work; the middle does not.
• Carousels outperform single images for anything with steps, comparisons or lists.
• Hashtags: five to ten specific ones beat thirty generic ones. Put them at the end or in a comment.
• Every clickable destination is the profile link, so the caption has to tell people to go there.

X: compression

X rewards the shortest form of a real point. Nothing survives that needs a run-up. Delete the introduction, state the claim, and let the replies ask for the detail.

• One sentence is a legitimate post. Two are usually better than five.
• Threads work when each post stands alone — a thread is a sequence of posts, not a paragraph cut into pieces.
• Links reduce distribution here too; put the link in a reply when reach matters more than clicks.
• A specific, mildly contrarian statement outperforms a general true one every time.
• Hashtags read as spam. Do not use them.

LinkedIn: specifics, no theatre

LinkedIn rewards professional specificity and punishes the two dominant local styles: motivational-story-with-a-twist, and press-release. Say what you did, what it cost, what happened, what you would do differently.

• The first two lines appear before "see more". They must contain the point, not the setup.
• Length: 100–250 words. Short line breaks make it readable on a phone.
• Numbers are the currency: time saved, cost, conversion, headcount, timeline.
• Documents and carousels get read. Links in the post body reduce reach — first comment is the convention.
• Write as a person, not as the company. Personal accounts consistently outreach brand pages.

TikTok: the first two seconds

The caption is nearly irrelevant; the opening frame and the first spoken sentence are the post. Show the result, the problem or the surprise immediately, then explain. Anything resembling an intro is fatal.

• Open on the outcome ("this took eleven minutes"), never on a greeting.
• On-screen text carries the message for the majority who watch without sound.
• Native and unpolished beats produced. An ad that looks like an ad is skipped.
• Caption: one line of context plus two or three specific hashtags.
• Length: as short as the point allows. A 20-second video watched to the end beats a 90-second one abandoned at 15.

Adapting one idea, worked through

Take one fact: "a customer cut their product-page writing from two hours to fifteen minutes."

1. Facebook — the story: who they are, what the two hours looked like, what changed, what they do with the time now. 150 words.
2. Instagram — a before/after visual of the page, caption opening "Two hours became fifteen minutes." One line, then the detail.
3. X — "A store owner told us product descriptions took two hours each. It is now about fifteen minutes. The bottleneck was never the writing — it was deciding what to say." Nothing else.
4. LinkedIn — the process: what the two hours consisted of, which parts were removed, what stayed manual and why. Numbers throughout, 200 words.
5. TikTok — screen recording, opening frame reads "2 hours → 15 minutes", then show the actual sequence.

One fact, five posts, one sitting. That is what a content calendar should be filled with — not five copies of the same paragraph.

The two rules that keep this honest

First: never post to a platform you are not willing to reply on. Distribution without conversation is broadcasting, and every platform now weights replies heavily.

Second: two platforms done properly beat five done automatically. Pick the two where your customers actually are, hold them, and add a third only when the first two run themselves.

Frequently asked questions