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List Converter

Convert lists to delimited text, JSON or JavaScript, Python, PHP and Java arrays; split quoted CSV into lines.

list-converterLOCAL WORKSPACE

Enabling local controls…

Input

Original mode preserves spacing. New modes trim and omit blank items; limits: 10,000 items, 100,000 UTF-16 units and 1 MiB output. CSV parsing: 32 KiB, 200 columns per record, 1,000 records and 10,000 cells. Quoted multiline cells retain their line breaks.

Input stays in this browser. Nothing is uploaded or stored.

Result

Run the tool to see its result here.

How to use this tool

Choose a conversion. Original JSON + quoted CSV preserves spacing; new modes trim lines and omit blank values. Choose formatting, quotes and separators as needed.

When not to use it

CSV splitting flattens records and requires a single-character separator. It preserves line breaks inside quoted cells; it does not sanitize spreadsheet formulas or execute generated code.