Thread Splitter

From essay to thread in one step

Write or paste the full text; the splitter turns it into posts that each fit the platform’s limit, counted the platform’s way (X’s weighted length, Bluesky’s graphemes). It:

• breaks between sentences wherever possible, and between paragraphs when a new paragraph starts;
• falls back to word breaks for very long sentences, and only splits inside a word when a single “word” (like a long URL) is longer than a post;
• reserves room for numbering such as “3/12”, recalculating until the total is stable, so the numbers never push a post over the limit.

Each post has its own Copy button. Download saves the whole thread as text, with posts separated by lines.

Writing better threads

• Make the first post work on its own (most people only see that one).
• One idea per post; the sentence-based splitting helps.
• End with a summary or a link back to the full piece.

Numbering at the end (“…1/5”) keeps the first words of each post for your content. Choose None if you prefer threads without numbers.

Most writing advice boils down to one idea: respect the reader’s time. Every sentence should either move the argument forward or give the reader a reason to keep going.

Start with the point. Readers skim, so the first line of every paragraph should tell them why it matters. Cut the warm-up sentences you needed to get started; your reader doesn’t.

Then edit for rhythm. Mix short sentences with longer ones, read the draft aloud, and stop when you have said what you came to say.

Last reviewed 1 November 2026 · How Textkiln tools work