JSON Formatter

Transform raw JSON data into beautifully formatted, readable code with proper indentation, syntax highlighting, and collapsible structures. This essential developer tool validates JSON syntax while providing error detection and easy navigation through complex nested data. Perfect for debugging API responses, analyzing data structures, preparing documentation, and working with complex JSON configurations in a clear, organized format.
Syntax Highlighting Error Detection Collapsible Trees Validation
Quick Examples 
INPUT: {"name":"John","age":30}
OUTPUT: {
  "name": "John",
  "age": 30
}
ERROR: Missing comma at line 3
JSON Code Input
Format Settings
JSON Statistics
0
Lines
0
Characters
0
Objects
0
Arrays
Formatted JSON Code

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

Can this tool fix broken JSON syntax?
The formatter can identify and highlight JSON syntax errors, but it cannot automatically fix them. It will show you exactly where errors occur (missing commas, unclosed brackets, etc.) so you can correct them manually.
What is the maximum JSON file size it can handle?
The tool can handle JSON files up to several megabytes in size. Very large files may take a moment to process and format. For optimal performance, consider breaking extremely large JSON files into smaller chunks.
Does formatting change the JSON data in any way?
No, formatting only changes whitespace and indentation to improve readability. The actual data, structure, and values remain completely unchanged. Formatted JSON is functionally identical to the original.
Can I collapse sections of large JSON files?
Yes, the formatter provides collapsible/expandable sections for nested objects and arrays. This makes it easy to navigate through large, complex JSON structures and focus on specific sections.
Is this tool suitable for API response debugging?
Absolutely! The formatter is perfect for debugging API responses, analyzing data structures, and understanding complex nested JSON. The syntax highlighting and validation help identify issues quickly.

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