Social Threader

Repository-backed resource library

Practical guides for writing clearer social threads

Choose a workflow for sentence boundaries, platform character limits, image-and-text ordering, or the open-source JavaScript chunking engine. Every product claim here maps to behavior documented and tested in the Social Threader repository.

Quick verdict Start with the sentence-boundary guide when readability is the problem. Use the character-limit guide when the same draft must work across several platforms.

Best forManual thread preparation

Not includedPublishing or scheduling

Written by MPR Lab · Reviewed against the public repository · Updated

Open Social Threader Choose a guide

Five distinct workflows

Choose the problem you are solving

Readable boundaries

Split text without breaking sentences

Preserve sentence or paragraph boundaries where they fit, then handle long sentences without exceeding the selected maximum.

Follow the sentence-aware workflow

Cross-platform planning

Compare social media character limits

See how the same source draft changes at 280, 300, 500, and custom character limits.

Compare character-limit output

280-character workflow

Prepare a numbered Twitter/X thread

Reserve room for numbering, copy each post in sequence, and understand what still needs to happen manually.

Build a 280-character thread

Mixed media

Create image-and-text social threads

Keep pasted or selected images in order with text chunks while accounting for browser and mobile clipboard differences.

Plan an image-and-text thread

Developer guide

Study the JavaScript chunking algorithm

Trace the actual ES-module workflow for word boundaries, sentences, paragraphs, and enumeration overhead.

Read the JavaScript implementation guide

Evidence boundary

What these guides do—and do not—claim

Grounded in current behavior

  • Configured character-limit presets and custom sizes
  • Sentence, paragraph, and enumeration controls
  • Character, word, sentence, and paragraph statistics
  • Text and image chunk handling on web and mobile
  • Repository tests for documented boundary cases

Outside the product contract

  • Automatic posting or thread scheduling
  • AI rewriting, summarization, or engagement scoring
  • Guaranteed platform-policy or language coverage
  • Customer results, ranking claims, or performance promises
  • Security or privacy guarantees not documented in the repository

The configured preset values below are copied directly from the repository and provide a compact example of the evidence used throughout this library: 

export const DEFAULT_LENGTHS = Object.freeze({
    THREADS: 500,
    BLUESKY: 300,
    TWITTER: 280,
    CUSTOM: 128
});

Start with the text you already have

Paste a draft, choose a platform preset or custom maximum, and inspect the resulting chunks before you post them manually.

Open the thread splitter