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JSON Formatter & Validator

Format, validate, minify and beautify JSON data — instantly, free, no login.

✓ Free✓ No Login✓ Syntax Highlighting✓ Validates Errors✓ Private
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📚 JSON Quick Reference

String"hello world"
Number42 / 3.14
Booleantrue / false
Nullnull
Array[1, 2, 3]
Object{"key": "value"}

⚠️ Common JSON Errors

✕Trailing comma after last item
✕Single quotes instead of double quotes
✕Missing comma between items
✕Unquoted key names
✕Unclosed bracket or brace

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PursTech Pro

Unlimited usage, zero ads, API access

📖 How to Use the JSON Formatter

1

Paste Your JSON

Copy your raw or minified JSON and paste it into the input box. You can also click 'Load sample JSON' to try it out.

2

Choose an Action

Click Format to beautify with proper indentation, Minify to compress it, or Validate to check for errors without changing anything.

3

Copy the Result

Your formatted JSON appears below with colour syntax highlighting. Click Copy to grab it and use it anywhere.

❓ Frequently Asked Questions