Import a JSON file (up to 200 MB, max 50,000 rows loaded). The left panel lets you edit a JSON array of objects; the right panel shows generated CSV output and a read-only grid preview.
Use a JSON array of objects, with one object per row and consistent keys.
JSON
Your data must remain a JSON array of objects to convert into CSV rows. Use Apply after editing.
CSV output
CSV output is regenerated from the JSON panel after each Apply.