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JSON Formatter

Format, validate, and minify JSON. All processing happens in your browser.

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JSON Formatter

Format, validate, and minify JSON. All processing happens in your browser.

InputJSON
OutputJSON
Embed code
<iframe src="https://devcraft.tools/embed/json-formatter" width="100%" height="600" frameborder="0" title="JSON Formatter - devcraft"></iframe>
<p style="font-size:12px;text-align:center;margin-top:4px;">
  <a href="https://devcraft.tools/tools/json-formatter" target="_blank" rel="noopener">Powered by devcraft</a>
</p>
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Powered by devcraft

How to Use JSON Formatter

  1. 1

    Paste your JSON

    Paste or type your JSON data into the input field on the left.

  2. 2

    Choose an action

    Click Format to pretty-print your JSON, or Minify to compress it into a single line.

  3. 3

    Pick your view

    Toggle between the formatted text view and the interactive tree view to explore nested objects.

  4. 4

    Copy the result

    Click Copy Output to copy the formatted or minified JSON to your clipboard.

Frequently Asked Questions

No. All formatting and validation happens entirely in your browser using JavaScript. Your data never leaves your machine.

The tool can handle JSON files up to several megabytes. Performance depends on your browser and device, but typical JSON payloads format instantly.

Yes. When you click Format or Minify, the tool parses the JSON and reports any syntax errors with descriptive messages to help you fix them.

Yes. Use the tab size selector to switch between 2-space and 4-space indentation before formatting.

The tree view displays your JSON as a collapsible, interactive hierarchy. You can expand and collapse objects and arrays to explore the structure.