Tokenizer Visualizer

See how text splits into approximate tokens.

Text to tokenize

What Is a Tokenizer Visualizer?

The Tokenizer Visualizer shows how text is likely to be split into tokens. Each approximate token is drawn as a colored segment, giving an intuitive sense of how token boundaries fall across words, spaces, and characters, and how many tokens a chunk of text consumes.

How to Use This Tokenizer Visualizer

1
Paste textEnter any text to tokenize.
2
See the tokensEach colored segment is one approximate token.
3
Read the statsCheck token count, character count, and the average characters per token.

Frequently Asked Questions

No. Real tokenizers use byte-pair encoding and are trained per model. This is an approximation that illustrates token boundaries for planning purposes.

Whitespace is often attached to tokens or emitted separately. The visualizer keeps whitespace as its own segment to show where boundaries fall.

Yes. Visualizing boundaries helps you see which parts of a prompt consume many tokens, such as URLs, code, or lists.

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