// headache killer

CSV FLATTENER

Paste nested JSON. Get a flat CSV. No signup, no limits, no BS. Works entirely in your browser.

JSON Input

Upload File

CSV Output

⚡

Nested objects become dot-notation keys. Arrays become JSON strings. One row per top-level object.

🔸

Array items become separate rows. Perfect for Zapier, Airtable, or any tool that needs flat tabular data.

🔒

Your data never leaves your browser. No server, no storage, no tracking. Paste, flatten, download.