---
title: "Thread Splitter: Long Text to Numbered Posts | Comet Chatter"
description: "Split long text into a numbered thread for X, Threads, Bluesky or Mastodon, cut at sentences and words, with every post counted by the platform's rules."
url: https://cometchatter.buzz/thread-splitter/
---

# Thread splitter

Paste something long and get a numbered thread back, cut at sentences rather than mid-word, with each post measured the way the platform measures it.

Linking to a page in your thread? WebTraceCheck's website audit lists the page's Open Graph and Twitter card fields, so you can check the title, description and image its preview will show. [Open the website audit on WebTraceCheck (new tab)](https://webtracecheck.com/website-audit)

## How the splitter decides where to cut

Each post is filled with as much text as fits, then the splitter looks back for the best place to end it: a paragraph break first, then the end of a sentence or line, and only then the space between two words. It never cuts inside a link. A single word longer than a whole post is the only thing it will break in the middle.

The numbers are counted too. Room for “12/12” is kept in every post, so adding the numbering never pushes a post over. Posts are measured by the platform's own rules, as of October 2026: on X a link costs 23 and an emoji 2, on Threads an emoji costs its size in bytes, and Bluesky counts long links in their shortened form.

### Tips for a thread people finish

- Make the first post work on its own: it is the one that gets shared.
- Use `---` where you want a cliffhanger, or tick “new post at every paragraph” if you have already written one paragraph per post.
- Read the posts in order before you publish; a cut that is correct can still land awkwardly.

## Questions

**Can I post the whole thread from here?**

No, the splitter does not connect to any account. Copy each post with its own button and paste it as a reply to the one before, or use Copy all to keep the thread in your notes.

**Why is the last post so short?**

The splitter fills posts from the start, so whatever is left over ends up last. If it bothers you, add a `---` line a little earlier to move text into the final post.

**Does the number at the end count towards the limit?**

Yes. The label and the space before it are counted in every post, and space is kept for the widest number in the thread.