JSONLint
The free online validator, formatter, and beautifier for JSON

JSONLint is a free web-based tool for validating, formatting, and beautifying JSON data. Users can paste JSON directly, type it in, or provide a URL to have their code checked for errors and reformatted. It also offers additional utilities like JSON diff, minification, schema validation, and various format converters.
Users paste or type JSON (or provide a URL) into the editor, and JSONLint validates it against JSON standards, highlighting errors with line numbers and offering formatting or minification options.
developers working with JSON data
Background.
- Status
- launched
- Business model
- free
- Company
- CircleCell
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