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Some networks hold only a short post. Rather than refusing a longer caption, Ocoya splits it into a thread — a chain of replies that reads as one piece of writing. This happens automatically on X, Threads, Bluesky and Mastodon.

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When a post becomes a thread

Ocoya warns you while you’re writing, before you schedule anything:
Twitter caption exceeds 280 characters and will be split into a thread
That’s a warning, not an error — the post will publish.

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The hard limit

Threading is not unlimited. Above 5,000 characters the post is refused outright and you’ll need to shorten it. So on X there are three ranges:
  • Up to 280 — one post
  • 280 to 5,000 — a thread
  • Above 5,000 — refused

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Keeping it to one post

If you want a single post rather than a thread, shorten the caption until the warning disappears. Ocoya counts characters as you type. Because you can write a different caption per channel, the usual approach is a short version for X and a longer one for Facebook or LinkedIn, in the same post.

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Networks that don’t thread

Every other network either accepts the full caption or refuses it. Facebook takes 5,000 characters in one post, LinkedIn 3,000, Instagram 2,200 — exceed those and the post is refused rather than split. See Character and media limits.

Character and media limits

Every network’s limits in one table.

X (Twitter)

Connecting X, and its duplicate-content rule.