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How to Format JSON

Formatting (or beautifying) JSON adds proper indentation, line breaks, and syntax highlighting to make JSON data readable. Minified JSON is compact but unreadable for debugging.

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What is this use case?

Minified JSON strips all whitespace to save bandwidth. Formatted JSON adds 2-space or 4-space indentation, line breaks between objects, and visual hierarchy that reveals the data structure at a glance.

Step-by-Step Guide

1

Paste minified JSON

Copy the compact JSON string from your source (API response, file, or clipboard).

2

Choose indentation

Select 2-space or 4-space indentation. Most developers prefer 2-space indentation for JSON files.

3

Format

Click Format to parse and re-serialize the JSON with proper indentation and line breaks.

4

Copy or download

Copy the formatted JSON to your clipboard or download it as a .json file.

Tips & Best Practices

  • Use consistent indentation (2 spaces) for team projects — most editors default to 2 spaces for JSON.
  • Format JSON before comparing two files to make differences visible.
  • Sort object keys alphabetically to maintain consistency across your codebase.

Related Tools

JSON Formatter JSON Validator JSON Compare JSON Minifier

Frequently Asked Questions

Does formatting change the JSON data?

No. Formatting only affects whitespace. The data values, structure, and semantics remain identical.

What indentation should I use?

2 spaces is the most common convention for JSON. 4 spaces is also used. Tabs are technically valid but not recommended.