JSON Formatter

Pretty-print and format raw JSON into a structured, human-readable layout with proper indentation and syntax highlighting.

JSON Formatter / Prettifier

Format and beautify minified JSON with proper indentation and line breaks.

Minified JSON Input

Formatted JSON Output

About JSON Formatting

JSON formatting adds proper indentation and line breaks to make JSON readable and debuggable.

Common use cases:

Making minified API responses readable
Debugging JSON structure and nesting
Code review and documentation
Understanding complex data structures

Tip: This tool also validates JSON syntax - any errors will be clearly highlighted.

What is JSON Formatting?

JSON formatting (also called pretty-printing) takes compact or minified JSON text and restructures it with consistent indentation, line breaks, and spacing. This makes deeply nested objects and arrays far easier to read, navigate, and debug, especially when inspecting API responses or configuration files.

Common Use Cases

API Response Inspection: Paste raw API responses to quickly understand the data shape and nesting.

Debugging Payloads: Identify missing or misplaced fields in request/response bodies before filing a bug report.

Configuration Review: Read JSON-based config files (package.json, tsconfig.json) in a clean, structured view.

Documentation: Format sample payloads before embedding them in documentation or Postman collections.

Tips

Use 2-space indentation for most documentation and 4-space for codebases that enforce it via a linter.

If the formatter reports an error, paste the output into the JSON Validator to locate the exact syntax problem.

Formatted JSON is larger in byte size — use the JSON Minifier before sending payloads over the wire.