JSON Formatter & Validator
Free online JSON formatter, validator, and minifier. Pretty-print or compact JSON in one click. Fast, private, and runs entirely in your browser.
What is JSON Formatting?
JSON (JavaScript Object Notation) is the most widely used data interchange format on the web. However, raw JSON from APIs is often minified — a single long line with no whitespace — making it nearly impossible to read. JSON formatting (also called pretty-printing) adds indentation, line breaks, and spacing to make the structure clear. This is essential for debugging API responses, inspecting configuration files, and documenting data schemas. Conversely, minifying JSON removes unnecessary whitespace to reduce file size for production use. Use this free online JSON formatter to beautify or minify your JSON data instantly.
How to Use the JSON Formatter
- Paste your JSON data into the input field above.
- Click Format to beautify with indentation, or Minify to compact it.
- Click Copy to copy the formatted result to your clipboard.
When to Use JSON Formatting
- Debugging REST API or GraphQL responses
- Inspecting JSON configuration files during development
- Validating JSON syntax before submitting to an API
- Creating readable documentation from raw API output
- Minifying JSON for production to reduce bandwidth