You turn one campaign idea into posts for every platform by writing a one-page brief first: the core message, one proof point and one call to action. Then each platform gets a new hook, length and format built from that page. The idea stays fixed. Only the packaging changes.
TLDR: Write the brief once (about 150 words), then fill a six-row table: platform, hook, length, format, link, time. In Mydrop's data, carousels ran 10% above an account's typical post and a link in the caption cost 7%.
The one-page brief fits in 150 words
Before you write a single post, answer five lines:
- Core message: one sentence a stranger could repeat.
- Who it is for: one audience, not "everyone".
- Proof: one number, quote or before-and-after.
- Call to action: one thing to do (read, sign up, reply).
- Banned words: terms your brand never uses.
If you cannot write the core message in one sentence, the campaign is not ready to be split across platforms. Fix it now. A weak idea copied six times is six weak posts.
Fill a platform table, not six blank pages
| Platform | Hook (first line) | Length | Format | Link |
|---|---|---|---|---|
| The proof point | 2 to 3 sentences | Carousel | Bio | |
| The problem, in plain words | Longer story | Text or document | Comment | |
| TikTok | A spoken question or result | Under 60 seconds | Short video | Bio |
| X | The core message, shortened | Fits 280 characters | Text | Allowed |
| A direct question | Short | Photo or link | Allowed | |
| The promise as a title | Short | Vertical image | Link on pin |
The hook is the only part you write fresh. The proof and call to action come straight from the brief.
Two rules from the data: carousels ran 10% above median where you can use them, and a link in the caption cost 7% on engagement, so put the link in the bio or a comment where it fits.
Adapt the hook, not the idea
Take a campaign about a free planning template. The core message is "Plan a month of posts in one hour".
- Instagram opens with the result: "30 posts planned in 58 minutes".
- LinkedIn opens with the problem: "Most teams plan content weekly and regret it by Wednesday".
- TikTok opens with a question: "How long does your content plan take?"
Same promise, same proof, three openings. Each takes two minutes once the brief exists.
Write the brief into your tool once
Re-typing the same idea per account is where time goes. In Mydrop, you write the post once, switch the caption per platform and check each in the post preview. If you run several brands, the bulk creation feature lets you fill many posts from one sheet.
Stagger the posts, do not drop them all at once
Posting everywhere in the same minute makes the campaign look like a broadcast. Spread it: lead with the platform where your audience is most active, then follow over two to three days.
Keep each post inside the audience's daytime. In Mydrop's data, posts between midnight and 6 am local time ran 17% below the median across platforms.
Check each version before it goes out
Adapting fast is how small errors slip in. For every version, run a 60-second check:
- The hook still says the core message.
- The call to action is the one in the brief, not an old one.
- The caption fits the platform's limit (Instagram and TikTok allow 2,200 characters, X allows 280).
- The crop and the first frame work on that platform's screen shape.
One person should read every version side by side once. Mismatched offers across platforms, such as two different dates, are the most common campaign mistake, and they are easy to see in a single view.
Reuse what worked, not what existed
After a week, compare each platform's post with that account's usual median. Keep the hook style that beat it and drop what did not. Write the winner in the brief for next time.
For video-specific adaptation, see how to repurpose video for four platforms. For going from one post to many, see one post into 15 pieces.
Next step: pick your next campaign idea and write the five-line brief before opening any tool. Then fill the table. To manage the whole set in one calendar, start free with Mydrop.






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