Thread splitter
Paste anything — an essay, a blog post, your shower thoughts — and get it split into a clean thread for X or Threads. Breaks land at paragraphs and sentences, never mid-word.
How the splitter decides where to break
Nothing reads worse than a thread chopped mid-sentence. This tool splits with a hierarchy: it keeps paragraphs together when they fit, falls back to sentence boundaries when they don't, and only breaks on words as a last resort. Links on X are counted at 23 characters — exactly how X bills them — so a post full of URLs won't come up short.
Turn on numbering and each post gets a "(1/n)" suffix so readers always know where they are in the thread — the counter reserves space for it automatically.
What makes a thread actually get read
- The first post is a hook, not an intro. "A few thoughts on X" dies in the feed. Open with the most surprising claim in the piece, then let the thread back it up.
- One idea per post. If a post needs a second read to parse, split it again. White space is your friend.
- End with a handoff. The last post is prime real estate: link the full article, your newsletter, or simply ask a question that invites replies.
- Don't let pacing kill it. Publishing a 12-post thread by hand means 12 chances to get distracted. A scheduler that publishes whole threads as one linked conversation removes the fumbling.
X threads vs. Threads threads
Both platforms support linked multi-post conversations, but the rhythm differs. X gives you 280 characters per post — punchy, aphoristic, quote-friendly. Threads gives you 500 — roomier, more conversational, closer to a paragraph each. The same source text often works on both; switch the platform pill above and see which pacing suits it better.
Frequently asked questions
Every URL counts as exactly 23 characters, regardless of its real length — that's how X's t.co link wrapper bills them. The splitter applies the same rule, so your posts fit on the first try.
Copy any post, tweak it as you publish, and keep moving — the per-post counts here give you the headroom. For heavier editing, adjust the source text and the thread re-splits live.
Yes — Zilfu lets you compose a root post plus as many replies as you need and publishes them as one linked conversation on X or Threads, at the time you pick.
No practical one on either platform. That said, completion rates drop fast after ~10 posts — if your thread runs longer, consider whether it wants to be an article with a short thread pointing to it.
Split. Now schedule the thread.
Zilfu publishes whole threads to X and Threads as one linked conversation — composed once, scheduled for your best time. Free for 2 accounts.