Format Transformer
Convert between JSON and CSV instantly — parsed locally in your browser.
Input (JSON)
Output (CSV)
Paste input to see output…
Supported Conversions
JSON → CSV
Flattens arrays of JSON objects into tabular CSV format. Handles nested values as strings, auto-escapes commas and quotes, and deduplicates column headers.
CSV → JSON
Parses CSV with proper quote and comma handling. Auto-detects numbers and booleans, supports multiline quoted fields, and produces indented JSON output.
All parsing happens locally in your browser using native JavaScript. No data is sent to any server.
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