X Thread Splitter & Character Counter — Free (Threads, LinkedIn)

Counting rules: on X, every link counts as 23 characters and CJK characters (Chinese, Japanese, Korean) count as 2 — this tool applies those rules for the X preset. Other platforms count characters plainly. Splitting prefers sentence boundaries; very long sentences are split at word boundaries. Nothing you paste leaves your browser — this tool prepares text only and never posts anything.

How to Split a Long Post Into a Thread

Social platforms still cap how much you can say in one post — 280 characters on X, 500 on Threads, 300 on Bluesky, 3000 on LinkedIn. When an idea needs more room, the answer is a thread: a numbered chain of posts that readers can follow in order. Doing that split by hand means counting characters, hunting for sentence breaks, and re-numbering everything every time you edit a word. This tool does the whole job in one paste.

Why Counting Is Trickier Than It Looks

On X, a character is not always a character. Every link counts as exactly 23 characters no matter how long the URL actually is, and Chinese, Japanese and Korean characters count as 2 each. A post that looks short can quietly exceed the limit because of one long link. This tool applies X's real counting rules for the X preset, so the number you see is the number the platform will enforce. Other platforms count plainly, and the tool switches to plain counting for their presets.

Splits That Respect Your Sentences

A thread that breaks mid-sentence reads badly and loses readers. The splitter packs whole sentences into each part and only breaks a sentence when a single sentence is longer than the limit on its own. Each part gets its 1/n numbering automatically, and every part has its own Copy button — post them in order, or copy everything at once.

One Tool for Four Platforms

Creators usually need two tools: one counter and one splitter, and often a different one per platform. Here the preset switcher covers X, Threads, Bluesky and LinkedIn in one page. Draft once, check the count for each platform, and split for whichever one you are posting to — no re-pasting, no second tab.

Frequently Asked Questions

How does the X thread splitter work?

Paste your text, pick the X preset, and the tool splits it into numbered parts that each fit the 280-character limit, preferring sentence boundaries. Copy each part in order and post them as a thread.

Why do links count as 23 characters on X?

X shortens every link with its t.co wrapper, and the platform counts each wrapped link as 23 characters regardless of the original URL length. This tool applies that rule so your count matches X's.

What counts as 2 characters on X?

Chinese, Japanese and Korean (CJK) characters count as 2 characters each under X's counting rules. Other characters, including emoji handling, follow the platform's standard rules.

Can I split for Threads, LinkedIn or Bluesky too?

Yes. Use the preset buttons: Threads allows 500 characters, Bluesky 300, and LinkedIn 3000. The splitter re-splits your text for the selected platform instantly.

Will my thread keep its sentence breaks?

Yes. The splitter packs whole sentences into each part and only breaks a sentence when that single sentence is longer than the platform limit on its own.

Is this tool free, and do you store my text?

Yes, it is free with no login, and everything runs in your browser — your text is never uploaded or stored. Note that this tool only prepares your thread; it never posts anything for you.