Thread Splitter
Split long text into a thread of posts that fit X, Threads or Bluesky limits, breaking at sentences, with 1/5-style numbering.
Free · No upload · 100% on your device
How to use Thread Splitter
- Type or paste your text.
- Choose the settings in the side panel. The result updates as you type.
- Copy the result or download it as a file.
Private by design. Everything you type, open or record is processed in this browser tab and is never uploaded to KittySuite.
About Thread Splitter
Posts break between sentences where possible and between words otherwise, never in the middle of a word. Space for the numbering is reserved so every post stays within the limit. Turn on “Start a new post at each paragraph” to keep your own structure.
Everything runs in this browser tab: your text is never uploaded or stored, and the result updates as you type. It keeps working offline once the page has loaded.
Thread Splitter: frequently asked questions
How do I split a long post into a thread?
Paste the text and choose the platform limit: X (280), Threads or Mastodon (500) or Bluesky (300).
Will words be cut in half?
No. Posts break between sentences where possible and between words otherwise.
Does the numbering count towards the limit?
Yes. Space for numbering such as 1/5 is reserved so every post stays within the limit.
Can I keep my own paragraphs?
Yes. Turn on “Start a new post at each paragraph”.