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List to JSON Array Converter

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Convert a plain list of lines into a JSON array, auto-detecting numbers and booleans or forcing strings. Optionally wrap into an object with keys. Free, private, instant.

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Privacy & Security

All processing happens locally in your browser — nothing is uploaded.

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check_circle Client-side-Side
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update v1.0
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How to Use

Paste one item per line; a JSON array is generated. Toggle type detection and pretty printing.

Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.