Perkforge
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Free browser utility

CSV ↔ JSON Converter

Convert tables with delimiter, header and type controls.

How it works

Paste CSV or a JSON array of objects, select the direction and delimiter, then review and download the result. Nothing is uploaded and no account is required.

Useful to know

CSV fields stay strings unless you enable scalar conversion. Leading zeros are preserved. Spreadsheet formula protection is enabled by default for CSV exports. Nested JSON values and unequal CSV row widths are rejected.

Private by design

Inputs, selected files and results stay inside your browser. Perkforge does not receive the content you process with this tool.