JSON Formatter & Validator
Format, validate, and beautify JSON data
Paste your JSON data below to format, validate, and beautify it. Get detailed error messages for invalid JSON.
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JSON Information
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format that's easy for humans to read and write.
Common Uses
APIs, configuration files, data storage, and communication between web services.
JSON Rules
Keys must be strings, values can be strings, numbers, booleans, null, objects, or arrays.
Validation
Our validator checks for proper syntax, correct data types, and valid JSON structure.