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JSON Formatter, Validator & Beautifier

Format, beautify, validate, minify, and inspect JSON payloads with real-time syntax error diagnosis, collapsible tree viewer, and 1-click copy.

Valid JSON Syntax

How to Use the JSON Formatter, Validator & Beautifier

  1. 1Paste your raw or minified JSON string into the editor, or upload a .json file.
  2. 2Click "Format (2 Spaces)" or "Format (4 Spaces)" to beautify, or "Minify" to compress into a single line.
  3. 3Inspect syntax validity; invalid lines and tokens are highlighted with descriptive error explanations.

Key Features & Capabilities

  • Real-time syntax checking with exact line & column error markers
  • Configurable indentation: 2 spaces, 4 spaces, or tabs
  • One-click JSON minification and whitespace removal
  • Download formatted .json file or copy directly to clipboard

Frequently Asked Questions

Is my JSON data safe and private when using this tool?

Yes. All parsing, validation, and formatting is performed entirely in your browser using client-side JavaScript. No data is ever transmitted to or stored on any server.

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