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X and Threads thread splitter

Split long text into X or Threads posts automatically. Respects 280 and 500 character limits, breaks on sentences, and numbers each part of the thread.

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Long-form ideas do not fit in a single X post. Paste your draft and the splitter breaks it into numbered chunks under 280 characters (or 500 for Threads), preferring sentence and word boundaries over awkward mid-word cuts.

Copy each part into X or schedule your shorter posts across platforms with WriteOnce.

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X and Threads thread splitter questions

It measures length the same way X does (including 23-character URLs), splits on paragraphs and sentences first, then words, and adds optional (1/n) numbering.

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