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JSON Validator and Syntax Checker

Validate JSON syntax, locate parsing errors, inspect structure, and try safe repairs locally in your browser.

Quick switch→JSON Formatter
JSONValidatorDebugging
Quick switch:JSON FormatterJSONPath QueryJSON Minifier

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Use cases

  • Validate an API response before processing it
  • Find missing quotes or commas in configuration
  • Review key counts and nesting depth

How to use

  1. Paste or enter JSON text
  2. Review the automatic validation result
  3. Review validation diagnostics and field statistics

Example input and output

JSON input

{"ok":true}

Result

Valid JSON

FAQ

How is this different from the JSON Formatter?

This tool focuses on validity, error location, and structure. Use the formatter when you mainly need indentation or minification.

Is the JSON sent to a server?

No. Validation and repair attempts run locally in your browser.

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