JSON Formatter & Validator
Format, validate, beautify, sort, and minify JSON payloads in real-time. Includes syntax error highlighting, interactive tree inspector, and export.
Understanding JSON Syntax & Formatting Best Practices
JavaScript Object Notation (JSON) is the universal data interchange format for modern REST, GraphQL, and serverless APIs. Maintaining clean, valid JSON structure prevents runtime errors during deployment and automated integration testing.
Common JSON Errors & How to Avoid Them
- Single vs. Double Quotes: JSON keys and string values MUST be wrapped in double quotes (
"key": "value"). Single quotes will trigger a parse syntax error. - Trailing Commas: Unlike modern JavaScript objects, standard JSON does not permit trailing commas after the final key/value pair in an object or array.
- Unquoted Keys: All object property names must be explicitly enclosed in double quotation marks.
Frequently Asked Questions
Everything you need to know about using this json formatter & validator.
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