JSON Formatter Online — Free & Private

A free edge API by formatho.com, privacy-first developer tools.

Open the full browser tool →

Free, no signup, runs entirely in your browser — your data never leaves your device.

🔓 Free 🔒 Zero tracking 🚫 No data collection ⚡ Edge-fast

Usage

curl "https://json-formatter-formatho.filesformatho.workers.dev/api?json=%7B%22name%22%3A%22formatho%22%7D&indent=2"
# invalid JSON returns 400 + error message

Full parameter reference and live response: /api endpoint.

Privacy-first: every request is processed in-memory on Cloudflare's edge and answered immediately. No logs, no analytics, no cookies, no data collection. See the Formatho privacy philosophy.

Full browser tool

Prefer a UI? Use the complete client-side version — your data never even leaves your browser: JSON Formatter Online on formatho.com.

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