JSON Formatter

Format, validate, and minify JSON data with syntax highlighting.

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How to use JSON Formatter

Three quick steps — no sign-up needed

  1. Step 1

    Paste your code

    Paste your code or text into JSON Formatter — nothing leaves your browser.

  2. Step 2

    Format it

    Click once to clean up, indent and standardise the formatting instantly.

  3. Step 3

    Copy the output

    Copy the tidied result, ready to paste back into your project.

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About JSON Formatter

JSON Formatter is a free online tool that lets you format, validate, and minify json data with syntax highlighting — straight from your browser, with no software to install, no sign-up, and no watermarks. It runs on Windows, Mac, Linux, Android, and iOS, so you can use it on whatever device you happen to have to hand.

Paste your code and JSON Formatter re-indents and standardises it instantly, making it far easier to read, review, and debug. Everything runs locally in your browser, so even private code never leaves your device. Files and data are processed securely and removed automatically afterwards, and many steps run entirely on your own device for extra privacy. Because JSON Formatter is completely free and unlimited, you can use it as often as you need for work, study, or personal projects.

Benefits of JSON Formatter

Clean, readable output Consistent indentation and spacing make your code easy to scan.
Catch structural errors Formatting surfaces misplaced brackets and syntax mistakes fast.
Runs in your browser Your code never leaves your device — safe for private projects.
Minify or beautify Switch between human-readable and compact output as you need.

Frequently asked questions

How do I format my code with JSON Formatter?

Paste your code, click format, and it's re-indented and cleaned up instantly. Everything runs in your browser, so nothing is uploaded.

Can it also minify?

Yes — switch between beautified (readable) and minified (compact) output depending on what you need.