JSON Formatter / Validator
Pretty-print, minify, and validate JSON with syntax highlighting and error detection.
Pro Tip: Text analysis and formatting occur offline with maximum data security.
How It Works
Format raw JSON into a readable indented structure, minify it for production, or validate for syntax errors with clear error messages pinpointing the exact line.
01
Paste JSON data
Enter or paste your raw or unformatted JSON text.
02
Format or validate
Click Format to beautify with 2-space indentation or Validate to check syntax.
03
Copy clean output
Copy the error-free, formatted JSON or download it as a file.
Key Features & Capabilities
Pretty-print with custom indentation
Minify / compact JSON
Syntax error detection with line numbers
Syntax highlighted output
One-click copy
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.