DataFlow Convert

CSV to JSON

Upload a CSV, get a JSON array of objects. Preview the output inline, edit it directly, copy to clipboard without downloading, or choose exactly which columns to include.

File
Convert to

Any delimiter

Comma, semicolon, tab — auto-detected. Override via options if needed.

Column selector

Pick which columns appear in the output and rename them before converting.

In-browser preview

The first 50 rows render as a table immediately after conversion.

Inline JSON editor

Edit the JSON output directly in the browser. Broken after an edit? One click repairs it.

Copy without downloading

For quick testing — paste straight into Postman, curl, or your code.

Encodings

Handles UTF-8, CP1250, ISO-8859-1, and other common CSV encodings.

Common use cases

  • Feed CSV exports from Metabase, Looker, or Google Sheets into an API.
  • Quickly generate test fixtures from spreadsheet data.
  • Transform CSV exports from databases into JSON for web applications.

Also see: JSON Repair · CSV to SQL · CSV to SQLite