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flowtools/JSON Formatter

JSON Formatter

Format, validate, and beautify JSON in your browser.

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How it works

  1. 1

    Paste your raw or minified JSON into the input panel.

  2. 2

    The formatter automatically validates and beautifies your JSON — choose 2 or 4 space indentation.

  3. 3

    Copy the formatted result with one click, ready to paste anywhere.

Why choose FlowTools

  • Real-time formatting as you type. No button to click.
  • Detailed error messages with position hints when JSON is invalid.
  • Choose 2-space, 4-space, or minified output with the indent selector.
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Frequently Asked Questions

Yes. Invalid JSON shows a detailed error message so you can fix it quickly.
2 spaces, 4 spaces, or minified (compact). Pick what fits your workflow.
No. Everything runs locally in your browser. Your data never leaves your device.