QRSmith
More tools

JSON formatter and validator

Paste a JSON string to check whether it is valid, format it with indentation, or minify it for compact output.

  • 100% free
  • No sign-up
  • Files stay on your device

Why people use QRSmith

Private by design

Your files and text never leave your device. Nothing is uploaded or stored.

Instant results

No queues and no waiting for uploads. Everything is calculated on your own device.

Free, no limits

No account, no watermark and no daily limit. Use it as often as you need.

How it works

  1. 1

    Enter your values or paste your content.

  2. 2

    Choose the operation you need.

  3. 3

    Get the result instantly in your browser.

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Frequently asked questions

Does formatting change JSON data?

Formatting changes whitespace and indentation only. Minifying removes unnecessary whitespace; the parsed data structure stays the same. Invalid JSON is not transformed.

Is it really free?

Yes. There is no sign-up, no watermark and no limit on how many times you use it.

Are my files or text uploaded anywhere?

No. Everything is processed inside your browser on your own device, so your data never reaches our servers.