How does the splitter decide where to break?
It prefers paragraph breaks first, then sentence boundaries, then word boundaries. It never breaks mid-word unless a single unbroken word is longer than the limit itself, and it never splits a URL.
Free tool for Creation
X (Twitter) Thread Splitter
Paste long-form writing and get a clean, numbered thread. Every post lands under the 280 weighted-character limit, URLs stay whole, and your paragraph breaks survive the split.
Numbering
Characters0
Posts0
Thread preview
Your thread
Paste your draft on the left and it becomes a ready-to-post thread here, one card per post.
Thread mechanics at a glance
A thread is a chain of ordinary X posts, so every post in it obeys the same weighted counting rules as a standalone post.
| Tier | Range |
|---|---|
| Per-post limit | 280 weighted characters |
| URLs | Count as 23 characters each, never split |
| Numbering | 1/ prefix or (1/12) suffix, both counted |
| Typical strong thread | 5 to 12 posts |
| The hook post | Post one earns the click into the rest |
How to turn long-form writing into a thread
The fastest way to write a good thread is to not write it as a thread. Write the idea long form first, in the same shape you would send it to your newsletter, then split it. A good split respects the reader: it breaks at paragraphs and sentences instead of mid-thought, keeps URLs whole so they stay clickable, and reserves room for numbering so no post silently runs over the limit. That is exactly what this tool does. The first post carries the whole thread, so treat it like a subject line: one sharp claim or question, no throat clearing. And if the writing came from a newsletter issue, say so in the last post and give people somewhere to go, because a thread that earns attention and routes none of it to your list is a rented win.
Questions and answers
Do URLs get split or shortened?
URLs are treated as unbreakable tokens and counted the way X counts them: 23 weighted characters each, regardless of their real length. A long link will move to the next post whole rather than being cut in half.
What thread length performs best?
Most strong threads land between 5 and 12 posts. Shorter threads usually mean the idea wanted to be a single post. Much longer threads lose readers before the payoff unless every post earns the next one.
Can I turn a newsletter issue into a thread?
Yes, and it is one of the highest-leverage repurposing moves for a newsletter-run business. Paste the issue, split it, tighten the hook, and end the thread with a reason to subscribe so the attention compounds into your list.
Keep going
Free tools cover one step. Distinctful puts posts, owned offer clicks, newsletter growth, reader warmth, and connected sales in one view.
The newsletter growth platform
The thread is the start. Newsletter growth is the point.
Distinctful publishes your threads across X, LinkedIn, and Threads, then shows post-level offer clicks and Beehiiv or Kit newsletter growth beside the writing.