How do I know if my JSON is valid?
Run Format or Minify. If the parser cannot read the input, you will see an error message instead of output.
JSON Formatter & Validator
Paste JSON to format, validate, or minify it.
What This JSON Formatter Is For
This formatter helps you clean up raw JSON, verify syntax, and generate compact JSON for transport. It is built for quick debugging during API and integration work.
- Beautify unreadable JSON payloads with consistent indentation.
- Minify JSON before embedding in configs or requests.
- Catch syntax errors early before sending data to services.
Related tools: JSON YAML Converter, JSON Table Converter, and JSONPath Tester.
JSON Formatter FAQ
What is the difference between formatting and minifying?
Formatting adds whitespace for readability. Minifying removes unnecessary whitespace to reduce output size.
Can I format large API responses here?
Usually yes. The tool runs locally, so speed depends on your browser and machine resources.