BuildQuill
Lessons 3 / 6Format, Validate, and Debug7 min
Lesson 3 of 67 minFormat, Validate, and Debug

Format JSON for Readability

Formatting does not change the data. It adds indentation so humans can scan nested objects and arrays.

Core concepts

  • Formatting improves readability.
  • Minified JSON is common in API responses.
  • Indentation reveals nesting.
  • Pretty JSON is easier to review.

Example

{"user":{"name":"Ava","roles":["admin","editor"],"active":true}}

Practice

Use the playground to format the minified sample, then identify the top-level keys and nested arrays.

JSON FormatterJSON Viewer

Checklist

  • Format first.
  • Scan top-level keys.
  • Expand nested objects mentally.
  • Avoid editing before you understand the shape.

Quiz

What does formatting JSON usually change?

Playground