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JSON Formatter & Validator
Paste raw or minified JSON to format it with proper indentation, validate its structure and spot errors instantly.
Frequently Asked Questions
JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write, and easy for machines to parse and generate. It is widely used for APIs, configuration files, and data storage.
Common JSON errors include: trailing commas after the last item, using single quotes instead of double quotes, unquoted keys, comments (not supported in JSON), and mismatched brackets or braces.
Formatting adds indentation and line breaks to make JSON human-readable. Minifying removes all unnecessary whitespace to reduce file size — useful for production APIs and storage.