🧩 AI Text Chunker

📝 Input Text

Paste long text for chunking, optimized for RAG retrieval-augmented generation systems.

⚙️ Chunking Parameters

642048
0512

📖 AI Text Chunking Guide

What is Text Chunking?

Text chunking is a core preprocessing step in RAG (Retrieval-Augmented Generation) systems. Long documents are split into appropriately sized segments, each converted to a vector embedding and stored in a vector database for AI model retrieval.

Chunking Strategy Comparison

Best Practices

  1. Chunk size of 256-512 tokens balances retrieval precision and context completeness
  2. Set 10-20% overlap to prevent key information from being cut at boundaries
  3. Add metadata (source, position, title) to each chunk to improve retrieval quality
  4. For structured documents (HTML/Markdown), prefer heading-level chunking
  5. Use different strategies for different document types: recursive for technical docs, sentence for conversations

❓ FAQ

What is AI text chunking?

AI text chunking is the process of splitting long text into smaller segments for RAG (Retrieval-Augmented Generation) systems. Chunked text segments are converted to vector embeddings and stored in a vector database for AI models to retrieve relevant content.

What are common chunking strategies?

Common strategies include: 1) Fixed-size chunking - split by character or token count; 2) Sentence chunking - split at sentence boundaries; 3) Paragraph chunking - split at paragraphs; 4) Recursive chunking - recursively split by separator hierarchy.

Why do chunks need overlap?

Overlap ensures adjacent chunks share content, preventing key information from being cut at chunk boundaries. Typically 10-20% overlap rate balances information completeness and storage efficiency.

What chunk size should I use?

Chunk size depends on embedding model limits and application needs. OpenAI text-embedding-3-small max is 8191 tokens, typically suggesting 256-512 token chunks.

Is my data uploaded to a server?

No. All text chunking is processed locally in your browser. No data is sent to any server.

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