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JSON Formatter & Validator

The ultimate tool to format, validate, and explore JSON data. Features tree view, error detection, and file support.

Size: 0 B
Valid JSON

Why use this JSON Formatter?

We built this tool because most JSON formatters are ugly, slow, or full of ads. This one runs 100% in your browser (privacy-first), supports massive files, and includes a powerful Tree View to explore complex data structures without eye strain.

⚡ Developer Features

  • • Syntax Highlighting (PrismJS)
  • • Minify & Beautify modes
  • • Drag & Drop File Support
  • • Tree View for nested data

🔒 Secure & Fast

  • • Client-side processing only
  • • No data sent to any server
  • • Instant validation feedback
  • • Works offline