What if rows have different fields?

JSON-to-CSV will use the union of all object keys as headers; missing fields become empty strings.

Does it handle multiline cells?

Yes — quoted CSV cells can contain newlines and are preserved correctly.

CSV ↔ JSON

Convert tabular data between CSV and JSON. Header row detection, custom delimiter, quoted-field-with-comma support.

CSV → JSON JSON → CSV

Delimiter Header row

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How to use CSV ↔ JSON

Choose direction.
Paste your data.
Pick delimiter and (for CSV) whether the first row is header.
Copy.

What is CSV ↔ JSON?

The classic bridge between flat tabular data and structured JSON. CSV becomes an array of objects (one per row, keyed by header). JSON arrays of objects become CSV with column headers. The parser handles quoted fields containing commas, escaped quotes, and CRLF line endings.

FAQ

What if rows have different fields?: JSON-to-CSV will use the union of all object keys as headers; missing fields become empty strings.
Does it handle multiline cells?: Yes — quoted CSV cells can contain newlines and are preserved correctly.

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Marcus Webb"The DevTool Craftsman"

Full-Stack Developer & Tools Architect

Marcus has been writing code since the dial-up era. He has contributed to open-source developer tools, built CI/CD pipelines for startups, and debugged production incidents at 3 AM more times than he would like to admit. His philosophy is that the best developer tool is the one that gets out of your way, and he writes about practical tooling that helps teams ship faster with fewer headaches.

📖 CSV ↔ JSON on Wikipedia·Developer Tools on Wikipedia·CSV ↔ JSON on Britannica

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