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JSON Formatter

Format, prettify, and validate JSON with syntax highlighting.

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## What does JSON Formatter do? Format, prettify, and validate JSON with syntax highlighting. This free online tool runs entirely in your browser, ensuring your data stays private.

How to use JSON Formatter

  1. 1

    Paste JSON

    Paste your raw or minified JSON string into the input box.

  2. 2

    Choose Formatting

    Select 2 spaces, 4 spaces, tabs, or minify.

  3. 3

    Toggle Options

    Sort keys alphabetically, or remove nulls and empty strings if needed.

  4. 4

    View or Copy

    Use the Tree view to explore, or simply copy/download the formatted JSON.

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Frequently Asked Questions

Is my JSON data secure?

Yes, all processing happens entirely in your browser. No data is sent to any server.

Can I format very large JSON files?

Yes, our formatter handles large JSON structures efficiently.

How do I find syntax errors?

If your JSON is invalid, the tool immediately highlights the error line and shows a clear message.

What is minification?

Minification removes all unnecessary spaces and line breaks to reduce file size.

Can I sort JSON keys alphabetically?

Yes! Toggle 'Sort Keys' and all object keys will be arranged from A-Z recursively.