AI Text Chunker

AI Tools

Split long text into token-sized chunks

FreePrivateInstant
Add a file · .txt .md .csv .json … · up to 2.00 MB
Chunk size (tokens)
Overlap (tokens)
Embed this tool on your websiteFree
  1. Choose how tall the frame should be.
  2. Press Copy code.
  3. Paste it into your page, blog, WordPress or Notion HTML block.
Height

The tool runs inside your visitor's browser, nothing is uploaded, and a small "Powered by ToolCloak" line stays under it. The second line (script) is optional: it makes the frame fit the tool's height.

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AI Text Chunker — at a glance

Cut long documents into AI-friendly pieces that fit the model’s limit.

Input
A 20-page report
Chunk 500 tokens
Run
Result
Chunk 1 of 9
Chunk 2 of 9

How to use it — step by step

Any long text, plus the chunk size and overlap you want (tokens are estimated at about 4 characters each).

1

Paste your input

Paste or type your content into the big input box.

2

Choose options

Pick the mode and options that fit what you need.

3

Split Text

Press the button. The result is created instantly on your device.

4

Copy the result

Check the output and press Copy to use it anywhere.

Pro tips

Small things that make the result better.

✦Overlap keeps context between chunks so nothing is lost at the edges.
✦500–1000 tokens per chunk is common for retrieval (RAG).
✦Chunks end at sentence boundaries whenever possible.

Quick facts

~4 charsper token estimate
Overlapkeeps context
Sentencesnever cut mid-way
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Frequently Asked Questions

Is the token count exact?+

No. It is an estimate of about 4 characters per token for English. Real counts depend on the model.

What is overlap for?+

The end of one chunk is repeated at the start of the next so the AI keeps the context between them.

Is my data safe?+

Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.

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