JSON Formatter

Your data never leaves your browser

Format and beautify your JSON data for better readability.

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About JSON Formatter

Paste your raw or minified JSON and instantly get a beautifully formatted, syntax-highlighted output. Supports custom indentation (2 or 4 spaces) and validates your JSON structure as you type.

How to use

  1. Paste your raw JSON into the input panel on the left.
  2. The formatted JSON appears instantly in the output panel on the right.
  3. Click Copy to copy the formatted JSON to your clipboard.

More JSON Tools

JSON Minifier

Minify and compress your JSON by removing all whitespace and line breaks.

JSON Validator

Validate your JSON data and find syntax errors instantly.

Frequently Asked Questions

FAQs about JSON Formatter

What is JSON formatting?

JSON formatting (also called "pretty printing") adds indentation and line breaks to compact JSON, making it easier for humans to read and debug.

Does this tool validate my JSON?

Yes. If your input contains invalid JSON, the tool will show an error message indicating what went wrong and where.

Is my data safe?

Your data never leaves your browser. All formatting is done client-side using JavaScript — nothing is sent to any server.

What is the maximum JSON size supported?

There is no hard limit, but very large files (over 10 MB) may cause your browser to slow down. For best performance, keep files under 5 MB.

Can I choose the indentation style?

Yes. Use the "Indent size" dropdown to switch between 2-space and 4-space indentation.