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How to Pretty Print JSON - Step by Step Guide

Step 1

Input Your Unformatted JSON

Let's transform your messy JSON data into beautiful, readable format! You have several convenient options:

•

Paste directly: Copy your minified or unformatted API response and paste it into the input editor

•

Upload a file: Click "Upload" to select a .json or .txt file containing unformatted JSON

•

Try the sample: Click "Sample" to load example minified data and see the pretty printing in action

Example: Minified JSON Input

Here's what compressed, unreadable JSON looks like:

{"planId":"TEL-UNLIMITED-5G","planName":"Unlimited 5G Premium","provider":"TelecomCorp","pricing":{"basePrice":89.99,"currency":"USD","billingCycle":"monthly"},"features":["unlimited_data","5g_access"],"isActive":true}

Step 2

Configure Pretty Print Options

Customize your formatting preferences! The pretty printer gives you control over how your JSON appears:

•

Indent Size: Choose between 2, 4, or 8 spaces, or use tabs for indentation

•

Sort Keys: Alphabetically sort object keys for consistent formatting

•

Remove Comments: Drop // and /* */ comments and trailing commas, so JSONC files like tsconfig.json format cleanly. Anything inside a string stays as it is

•

Minify Option: Click "Minify" to put the JSON on a single line, and "Pretty print" to switch back

Example: Formatting Options in Action

See how different settings affect the output:

2-space indentation for compact formatting

Alphabetical key sorting for consistency

Syntax highlighting for better readability

Step 3

Instant Pretty Printing

Watch the transformation happen instantly! As soon as you input JSON, the pretty printer automatically:

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Validates syntax: Checks for errors and highlights issues with helpful suggestions

•

Adds proper indentation: Makes nested objects and arrays easy to read

•

Applies syntax highlighting: Color-codes different elements for better visual parsing

Example: Beautifully Pretty Printed Output

The same JSON, now perfectly formatted and readable:

{
  "planId": "TEL-UNLIMITED-5G",
  "planName": "Unlimited 5G Premium",
  "provider": "TelecomCorp",
  "pricing": {
    "basePrice": 89.99,
    "currency": "USD",
    "billingCycle": "monthly"
  },
  "features": [
    "unlimited_data",
    "5g_access"
  ],
  "isActive": true
}

Step 4

Export Your Pretty Printed JSON

Get your beautifully formatted 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 documentation

•

Download as file: Save as a .json file with proper formatting preserved

•

Real-time validation: Green checkmark confirms your JSON is valid and beautifully formatted

What is JSON Pretty Print?

JSON Pretty Print is the process of formatting JSON data to make it human-readable by adding proper indentation, line breaks, and spacing. It transforms compressed, minified JSON into a structured format that's easy to read and debug.

Pretty printing is essential for developers who need to analyze API responses, debug JSON data, or make configuration files more maintainable. It preserves the data structure while dramatically improving readability.

Want the same data as rows and columns instead? Paste it into the JSON to Table viewer. If you only need a quick two-space format with JSONPath filtering, the JSON Formatter does that.

Frequently Asked Questions

Will pretty printing change any of my values?

No. Only the whitespace between tokens is rewritten. Numbers come out exactly as you typed them, so a 19-digit ID like 8901240544102066246 isn't rounded and a price written as 14.50 doesn't turn into 14.5. Escapes such as \u00e9 stay escapes, and if an object repeats a key, both copies are kept.

How is this different from the JSON Formatter page?

Both re-indent JSON. This page is the one with settings: indent width (2, 4 or 8 spaces, or tabs), alphabetical key sorting, and stripping comments out of JSONC files. The JSON Formatter uses a fixed two-space layout but adds JSONPath filtering and tools that edit the input in place.

Which indent should I pick?

Two spaces matches JSON.stringify(data, null, 2) and most JavaScript projects. Four spaces is what Python's json.dumps(indent=4) and many Java and C# codebases produce. Tabs let everyone who opens the file choose their own width, and eight spaces makes deep nesting easy to follow on paper.

My file has // comments in it. Can it still be pretty printed?

Yes. Standard JSON doesn't allow comments, so files like tsconfig.json or VS Code settings fail as they are. Tick Remove Comments and // line comments, /* block */ comments and trailing commas are dropped before formatting. Text inside strings, such as "https://example.com", is never touched.

What does Sort Keys Alphabetically do with arrays?

It sorts the keys of every object, at every level, using plain character order (so uppercase names come before lowercase ones). Arrays keep their order, because the position of an item usually means something. Values move together with their keys and aren't changed.

Can I get a minified copy from the same input?

Yes. Minify puts the whole document on one line with no spaces, which is handy for request bodies or environment variables. Click Pretty print to switch back. Key sorting and comment removal apply in both modes.

Is my JSON sent anywhere?

No. The formatting runs in your browser and nothing is uploaded. Your last input is kept in this browser's local storage so it survives a reload; clear the editor and it's removed.

JSON Pretty Print - Beautify and Format JSON Online