Free JSON Formatter & Validator Online
Format, validate, beautify, and minify JSON with syntax highlighting, error detection with line numbers, JSON path query, and schema validation. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Paste JSON
Paste raw JSON string into the input editor.
Format & Validate
Instantly see formatted JSON with syntax highlighting and error detection.
View Tree Structure
Browse JSON as interactive collapsible tree.
Copy or Minify
Copy formatted JSON or switch to minified compact format.
Frequently Asked Questions
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