Convertisseur CSV ↔ JSON

Parseur RFC 4180 avec détection auto du séparateur

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Convertisseur CSV ↔ JSON

Parse CSV (or TSV / semicolon-delimited) data into JSON arrays of objects, or serialise a JSON array back to CSV. Auto-detects delimiter, supports quoted fields with embedded commas, line breaks and double-quote escapes per RFC 4180.

Auto-detects comma / tab / semicolon delimiter
RFC 4180 quoting
Handles embedded line breaks in quoted fields
Header row as JSON keys
Key union for differently-shaped objects
Runs locally

FAQ

How does delimiter auto-detection work?

We sample the first 4 KB and pick the most frequent of comma, tab, semicolon and pipe.

Does it support nested JSON in CSV cells?

On JSON → CSV, nested objects and arrays are stringified as JSON inside the cell.