JSON Formatter & Validator
Inspect JSON more comfortably by formatting it into readable structure and checking whether the syntax is valid.
What this utility does
The JSON Formatter & Validator accepts JSON text and provides formatting, validation, and minification workflows so developers can spot malformed structure more easily.
How to use
- Paste JSON into the input area.
- Run validation or formatting and review any syntax feedback.
- Use the formatted or minified result as needed in your development workflow.
Practical notes
- Valid JSON requires double-quoted property names and valid JSON values.
- Validation confirms JSON syntax; it does not confirm that an API or application will accept the data schema.
Related tools
Helpful guide
Format and validate JSON online with a browser-based workflow for minified API responses, configuration files, logs and development data. Review the result before using it in production.
Format and beautify JSON
Paste compact or inconsistently indented JSON and use formatting to make nested objects and arrays easier to read and inspect.
Validate JSON
Validation helps identify malformed JSON before it is passed to an API, configuration file or application. Check the exact error shown by the tool rather than assuming that all JavaScript-like syntax is valid JSON.
Minify JSON
Minification removes unnecessary whitespace and can make JSON more compact for transport or storage. Keep a readable source copy when maintaining configuration or application data.
JSON for API debugging
A formatter is useful when inspecting API responses, request payloads and configuration data during development. Do not paste sensitive production secrets into a tool unless its privacy model is appropriate for your use.