JSON Formatter & Validator
Paste your JSON. Get it formatted, validated, and highlighted instantly.
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About This Tool
This free JSON Formatter lets you beautify, format, and validate JSON data. It automatically detects syntax errors and shows you exactly where the problem is. All processing is done locally in your browser — your data stays private.
JSON (JavaScript Object Notation) is a lightweight data-interchange format. It's easy for humans to read and write, and easy for machines to parse and generate. Use this tool to make minified JSON readable or to validate your API responses.