Qu-Outil

Free JSON Formatter & Validator

Paste JSON to pretty-print it, minify it or find the exact line of a syntax error. Choose 2 or 4 spaces or tabs.

  • 100% free
  • No limits
  • No upload
  • No watermark
  • Works on mobile
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How it works

How to use the JSON Formatter & Validator

  1. 1

    Paste JSON

    Paste your JSON into the box.

  2. 2

    Format or minify

    Choose indentation and press Format.

  3. 3

    Copy

    Copy or download the result.

Features

Why use Qu-Outil's JSON Formatter & Validator

Fast, private and free — with no limits.

Error location

Shows where invalid JSON breaks.

Sort keys

Optionally sort object keys alphabetically.

Instant and private

Everything happens in your browser as you type. Your text is never sent to a server.

Free and unlimited

No sign-up, no limits and no ads in the way. Use it as often as you like.

Works on any device

Fully responsive — works the same on a phone, tablet or computer.

FAQ

JSON Formatter & Validator — frequently asked questions

Is my JSON sent anywhere?

No. It is parsed in your browser only — safe for API keys and private data.

Is it free?

Yes — free with no sign-up and no limits.

Is my text stored or uploaded?

No. Everything runs in your browser; nothing you type is sent to a server or saved.

Support

Help keep Qu-Outil free

I build and run these tools in my free time and keep them free for everyone — no ads, no sign-up. If they helped you, buy me a chai or coffee via Google Pay or any UPI app. Your support keeps me building more free tools. Completely optional.

Google Pay / UPI ID
samarthdalela@oksbi
☕ Pay ₹50 with UPI app

The button opens Google Pay, PhonePe or Paytm on your phone. On desktop, scan the QR.

Scan to pay ₹50

Works with any UPI app