Free online CSV/TSV/JSON/Markdown format converter with custom delimiter and header options.
TL;DR: Free online CSV/TSV/JSON/Markdown format converter. RFC 4180-compliant quoting and newline handling, custom delimiters and header options, runs locally with no data leakage.
This tool runs entirely in your browser. Open DevTools → Network panel and search your input — it appears in no request.
FAQ
Completely free, no registration required. Convert CSV, TSV, JSON, and Markdown formats directly in your browser — all operations run locally.
CSV, TSV, and JSON can be used as input, with output to CSV, TSV, JSON, or Markdown table. Custom delimiters and header settings are also supported.
The tool fully follows RFC 4180 — fields containing delimiters, newlines, or quotes are automatically wrapped in double quotes, with internal quotes escaped as two consecutive quotes.
No. All conversions run locally in your browser. Data never leaves your device, so you can safely process sensitive information.
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