Social Caption Generator
One idea in, a caption for each platform out — written to how X, LinkedIn, Instagram, Facebook and Threads are actually read, with the character count against each one's limit.
10 free runs a day without an account · 30 a day with a free one.
Your results appear here.
Runs entirely in this browser. Nothing you type is uploaded, stored or seen by us.
Three steps, no account.
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01
Describe the idea
What you are posting about, in a sentence or two. A tone — "warm, plain, a bit dry" — changes the result a lot.
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02
Run it
Seconds. The counter says how many free runs are left today.
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03
Copy per platform
Each caption has its own copy. Edit before you post; the first line on Instagram and the first word on X are worth a second look.
The same news reads differently on every platform, and the usual failure is writing it once and pasting it five times. LinkedIn wants two short professional lines; X wants one thought under two hundred characters; Instagram lives or dies on the first line because that is all that shows before "more"; Threads wants to sound like a person talking.
This writes the five from one idea, each to its platform's brief, and shows the count against each limit. What it will not do is add a fact, a link or a claim that was not in the idea — and it is told not to open with "Exciting news!" or "We're thrilled", which is the sound of a caption nobody reads.
Social Caption Generator, answered.
No. It writes the captions; you post them. Posting to a social account needs an app connection to each platform, which is a different thing and not something this tool pretends to have.
Because the platforms are. A LinkedIn caption pasted onto X is too long and too formal; an X caption on LinkedIn reads as a fragment. Writing to each platform's habits is the whole job.
Instagram, up to five and relevant; LinkedIn, two at most and at the end; X, one only if it is natural; Facebook and Threads, none. These are the briefs it is given.
It is told not to add anything that was not in the idea — no number, no link, no claim. Read before posting; a small model is less reliable than a large one and a caption is public the moment it is up.
This is one job. The workspace does the rest.
The free tools stay free and stay ungated. Recast is where they stop being separate tabs and start handing work to each other — a link becomes a card, an article and a week of posts without you moving anything between them.