Data Tools

Transform data between JSON, CSV, YAML, XML, and TOML — 20 tools, all client-side. Useful for pipelines, config conversions, and ad-hoc data munging. Your data never leaves the browser, so financial and family-history files stay private.

20 tools available·Free·100% local·No uploads

CSV to JSON

Convert CSV spreadsheets to JSON format.

CSV to XML

Convert CSV data to XML format.

CSV to YAML

Convert CSV data to YAML format.

CSV Transposer

Transpose CSV data — swap rows with columns.

GEDCOM to JSON

Convert GEDCOM family tree files to structured JSON. Private — family data never leaves your device.

HTML Table to JSON

Extract data from HTML tables to structured JSON.

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Popular in Data

CSV to JSON
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CSV Transposer

Why local?

Your photos and files never leave your device. No uploads, no servers, no file size limits.

● LOCAL · MIT · 2026

built quietly