Asteria

TSV to JSONL

Turn TSV spreadsheet files into JSON Lines files on your own Mac, Windows or Linux computer. Asteria is free, works offline, and never uploads your files.

How to do it

  1. Download Asteria and open it. It's free and needs no account.
  2. Drop your TSV files onto its window, or press ⌘O (Ctrl O on Windows) to choose them. Drop as many as you like.
  3. Type csv to json linesand press Enter. One object per row, keyed by the header.
  4. Press ⌘↵ (Ctrl ↵ on Windows) to save. The JSONL files appear next to the originals, which stay exactly as they were.

What it needs

Nothing. This conversion is built into Asteria, so it works the moment the app is open, even offline.

How it was tested

A real TSV file was converted on macOS on Apple silicon and Linux, and the JSONL that came out was opened and checked with Python parser to make sure it is what it says it is.

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