Data tools

JSON, CSV and Base64, converted in the page.

These stay on your device · nothing is uploaded

• 01JSON FormatterIndent JSON so you can read it, or squash it flat. Says exactly where it breaks if it will not parse.
• 02JSON to CSVTurn an array of JSON objects into a spreadsheet-ready CSV. Nested values are flattened with dotted keys.
• 03CSV to JSONTurn a CSV into an array of JSON objects, with the header row as the keys. Handles quoted fields and embedded commas.
• 04Base64Encode text or a file to Base64, or decode it back. Runs in your browser, so a secret stays on your machine.