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Converter

Convert plain CSV/TSV or any ExCSV shape — plain, sidecar, ZIP, pack, JSON. Everything runs in your browser; nothing is uploaded.

Paste CSV/TSV, ExCSV text, or JSON — or open a file. Sidecar: select the .excsv and .csv together.

Preview appears above. Download the file when conversion finishes.

Formats

  • CSV/TSV — plain spreadsheet; header row becomes #column schema, any ExCSV output format.
  • Plain — inline .excsv with metadata and rows.
  • Sidecar — metadata-only .excsv + sibling .csv (downloaded as a ZIP pair).
  • ZIP — Deflate-wrapped plain file with schema in the archive comment.
  • Pack — columnar multi-table .excsv.pack.zip (single-table supported).
  • JSON — .excsv.json logical view; pack includes full tables[] data.