JSON FORMATTER / VALIDATOR
JSON Formatter / Validator
Pretty-print, minify, and validate JSON with syntax highlighting and error detection.
- Pretty-print with custom indentation
- Minify / compact JSON
- Syntax error detection with line numbers
- Syntax highlighted output
- One-click copy
Tip
Text analysis and formatting occur offline with maximum data security.
How It Works
3 simple steps01
Paste JSON
Enter your raw JSON string.
02
Format or Validate
Click Format for pretty-print or Validate to check for errors.
03
Copy output
Copy the formatted JSON.
Frequently Asked Questions
Yes, it formats deeply nested objects and arrays with proper indentation at all levels.
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Your files are processed locally in your browser. No data is uploaded to any server.