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Developer Tools

JSON Formatter

Format, beautify, indent, and minify JSON data with syntax highlighting, validation, and file export.

Indent:
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About the JSON Formatter

JSON (JavaScript Object Notation) is the standard data interchange format for REST APIs and web services. Unformatted JSON is difficult to read and debug. Our JSON Formatter prettifies and validates your JSON in milliseconds.

How to Use the JSON Formatter

  1. 1Paste raw or minified JSON into the editor.
  2. 2Choose your preferred indentation level (2 Spaces, 4 Spaces, or Tabs).
  3. 3Click "Format JSON" to beautify or "Minify JSON" to compress onto a single line.
  4. 4Copy the formatted output or click "Download JSON" to save as a file.

How It Works & Underlying Logic

The tool uses JSON.parse() to construct an in-memory object hierarchy and JSON.stringify(data, null, indent) to render properly formatted, indented, and escaped JSON.

Mathematical Formula / RuleFormatted = JSON.stringify(JSON.parse(rawJson), null, spaceCount)

Practical Calculation Examples

Minified to Beautified JSON

Formatting compact API response

Input: {"user":"john","id":101,"roles":["admin","editor"]}
Output: { "user": "john", "id": 101, "roles": [ "admin", "editor" ] }

Helpful Tips & Best Practices

  • •Minifying JSON before transmitting across network APIs reduces payload size and saves bandwidth.
  • •Always ensure property keys in JSON are enclosed in double quotes (") rather than single quotes (').

JSON Formatter FAQ

Yes! All parsing and formatting is performed entirely in your client browser. No JSON payloads are ever transmitted to any external server.

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