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CSV ↔ JSON Converter

Convert between CSV and JSON formats. Handles quoted fields, custom delimiters, and nested commas.

Delimiter:

Indent:

CSV Input

About CSV ↔ JSON Conversion

Handles quoted fields with commas, newlines, and escaped quotes ("").
Supports custom delimiters: comma, tab, semicolon, and pipe.
CSV → JSON uses the first row as object keys (headers).
JSON → CSV flattens objects into columns — nested objects are stringified.
Everything runs in your browser — no data is sent over the network.