JSON Prettify Online

Make your JSON pretty with beautiful formatting and indentation

Input

Loading editor...

Output

Formatted JSON will appear here

Paste JSON in the input area to get started

How to Prettify JSON - Step by Step Guide

Step 1

Input Your JSON Data

Let's prettify your JSON data! You have several convenient options:

Paste directly: Copy your API response or JSON data and paste it into the input editor
Upload a file: Click "Upload" to select a .json or .txt file from your computer
Try the sample: Click "Sample" to load example data and see how the prettifier works

Example: Unprettified JSON Input

Here's what unprettified, compact JSON looks like:

{"name":"Sarah Chen","email":"sarah@company.com","age":29,"department":"Marketing","skills":["SEO","Content Strategy","Analytics"],"active":true,"projects":[{"id":"PROJ-001","name":"Website Redesign","status":"active","budget":15000},{"id":"PROJ-002","name":"Social Media Campaign","status":"completed","budget":8500}]}
Step 2

Automatic Prettification & Validation

The prettification happens instantly! As soon as you input JSON, the prettifier automatically:

Validates syntax: Checks for errors and highlights issues with helpful suggestions
Adds pretty indentation: Makes nested objects and arrays easy to read
Syntax highlighting: Color-codes different elements for better readability

Example: Prettified Output

The same JSON, now prettified and readable:

{
  "name": "Sarah Chen",
  "email": "sarah@company.com",
  "age": 29,
  "department": "Marketing",
  "skills": [
    "SEO",
    "Content Strategy",
    "Analytics"
  ],
  "active": true,
  "projects": [
    {
      "id": "PROJ-001",
      "name": "Website Redesign",
      "status": "active",
      "budget": 15000
    }
  ]
}
Step 3

Choose Prettify Options

Customize your output based on your needs! The prettifier gives you control over how your JSON appears:

Pretty format: Default prettified JSON with proper indentation (2 spaces)
Minify option: Click "Minify" to compress JSON into a single line for production use
Syntax highlighting: Color-coded elements make it easy to spot different data types
Step 4

Export Your Prettified JSON

Get your perfectly prettified JSON ready for use! Multiple export options make it easy to integrate into your workflow:

Copy to clipboard: One-click copying for quick pasting into your code editor or application
Download as file: Save as a .json file for later use or sharing with your team
Real-time validation: Green checkmark confirms your JSON is valid and ready to use

Frequently Asked Questions

What does prettify JSON mean?

Prettifying JSON means transforming compact or minified JSON data into a well-formatted, human-readable structure with proper indentation, line breaks, and spacing. It makes the JSON structure clear and easy to understand, perfect for development and debugging.

How do I prettify JSON online?

Simply paste your JSON into the prettifier tool above. The tool will instantly transform your compact JSON into prettified code with proper indentation and syntax highlighting. You can then copy or download the prettified result for use in your projects.

Does prettifying JSON change the data?

No, prettifying JSON only changes the formatting and whitespace. The actual data, structure, and values remain exactly the same. The prettified JSON is functionally identical to the original and will work the same way in any application or API.

Can I prettify large JSON files?

Yes! The prettifier handles large JSON files efficiently. Upload or paste JSON of any size, and the tool will process it quickly while maintaining perfect formatting. You can also convert prettified JSON to readable tables for easier analysis.

What's the difference between prettify and minify?

Prettifying adds formatting with indentation and line breaks for readability. Minifying removes all unnecessary whitespace to create compact, single-line JSON. Use prettified JSON for development and debugging, or minified JSON for production to reduce file size.

Is the JSON prettifier free to use?

Yes, completely free with no limitations on file size, usage frequency, or features. No registration or sign-up required. Prettify unlimited JSON files with full syntax highlighting and validation.