Smart Sentence Splitting
Unlike dumb splitters that chop words in half, Tweet Splitter looks for sentence endings (.?!) first. If a sentence is too long, it finds the nearest safe space to break, ensuring your thread reads naturally.
Split long essays into optimized threads for X (Twitter), LinkedIn, Threads, Bluesky, Mastodon, and more. Smart sentence splitting, auto-numbering, no signup required.
Start typing to generate your thread...
Unlike dumb splitters that chop words in half, Tweet Splitter looks for sentence endings (.?!) first. If a sentence is too long, it finds the nearest safe space to break, ensuring your thread reads naturally.
X (280), Bluesky (300), Threads (500), Mastodon (500), LinkedIn (3K) — or enter any custom character limit. Counter reservation ensures numbering never pushes a chunk over the limit.
100% client-side. Your text never leaves your browser. No OAuth, no account, no API calls. Export
your thread as .txt or .md.
Keyboard shortcuts (when focus is outside the text box):
Ctrl/Cmd+Shift+Y copy all,
Ctrl/Cmd+Shift+E export .txt.
| Platform | Character Limit | Thread Style | Supported |
|---|---|---|---|
| X (Twitter) | 280 | Numbered thread (1/n) | ✓ |
| Bluesky | 300 | Numbered thread (1/n) | ✓ |
| Threads (Meta) | 500 | Numbered thread (1/n) | ✓ |
| Mastodon | 500 | Numbered thread (1/n) | ✓ |
| 3,000 | Sequential posts | ✓ | |
| 40,000 | Typically single post | Coming soon |
Blog post, article, essay, notes — paste any long-form content into the editor.
Select X, LinkedIn, Threads, Bluesky, Mastodon, or enter a custom character limit.
Text is instantly split at sentence boundaries with automatic numbering. No mid-word breaks.
Copy each chunk individually, copy all at once, or export as .txt / .md file.
Paste your long text into the box above, make sure the platform is set to Twitter/X, and click Split. Tweet Splitter automatically breaks your text at sentence boundaries into numbered tweets, each under 280 characters. Click Copy on each tweet and post them in sequence on X.
The standard character limit on X (formerly Twitter) is 280 characters for free accounts. X Premium subscribers get up to 25,000 characters per post. Tweet Splitter defaults to 280 characters and adjusts automatically.
There is no official limit on thread length. In practice, threads of 5–25 tweets perform best for engagement. Tweet Splitter will split into as many tweets as your content requires.
Completely free. No account, no login, no subscription. Tweet Splitter runs entirely in your browser — your text is never uploaded to any server.
No. Tweet Splitter is fully client-side. Everything runs in your browser tab. Your text never leaves your device. This is a core id8 principle — privacy by default.
Yes. Select Bluesky (300-character limit) or Mastodon (500-character limit) from the platform buttons. Tweet Splitter splits your text and reserves numbering space accordingly. Copy each chunk and paste it into your post composer manually — Tweet Splitter never connects to any platform API.
Tweet Splitter is a free, no-login alternative to Typefully, Chirr App, Hypefury, and similar paid tools. It does one thing extremely well: splits long text into a properly numbered tweet thread in seconds. No subscription. No watermark. Input auto-saved locally, never uploaded.
Copy the key sections of your blog post, paste into Tweet Splitter, and click Split. The tool breaks text at sentence boundaries and numbers each tweet automatically. Then copy each tweet and post in sequence on X. For a full guide, see our blog post: How to Repurpose a Blog Post as a Twitter Thread.
Yes. Select LinkedIn from the platform buttons to use the 3,000-character limit. Tweet Splitter splits your long-form content into sequential posts with automatic numbering, perfect for LinkedIn carousel-style threads. Copy each part and post in sequence.
Tweet Splitter uses the Intl.Segmenter API to detect sentence boundaries accurately. It splits at full stops, question marks, and exclamation marks. If a single sentence exceeds the character limit, it falls back to word boundaries — never cutting a word in half. This ensures every chunk reads naturally.
Yes. Tweet Splitter supports three numbering modes: End (appends 1/N at the end), Start (prepends 1/N at the beginning), and None (no numbering). The tool automatically reserves character space for the counter so your content never overflows the platform's limit.
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