Zoven

JSON Formatter

Format, validate, and beautify JSON code online

What is the JSON Formatter?

JSON, short for JavaScript Object Notation, is a text format for representing objects, arrays, strings, numbers, booleans, and null values. It is deliberately simple, which makes it common for APIs and configuration files.

How to use the JSON Formatter

1. Paste an object or array into the input editor.
2. Choose Format / Beautify to add consistent indentation, or Minify to remove unnecessary whitespace.
3. Read the validation message if the input is not valid JSON, then correct the reported punctuation or value.
4. Copy the result when it is ready for a request, config file, or code review.

Features

• Beautifies nested objects and arrays
• Minifies valid JSON for compact transfer
• Validates input locally before producing output
• Keeps pasted data in the current browser tab

Common mistakes to avoid

• Using single quotes instead of double quotes
• Leaving a trailing comma after the last property
• Writing comments inside a JSON document
• Forgetting a closing brace or bracket

Examples

Input	Result
{"name":"Ada","skills":["math","code"]}	{ "name": "Ada", "skills": [ "math", "code" ] }
{"enabled":true,"count":3}	{ "enabled": true, "count": 3 }

Best used for

• Inspecting API responses and config files quickly
• Fixing invalid JSON before it breaks a deploy
• Preparing readable JSON for docs and code review

Privacy

Formatting and validation happen in your browser. The JSON you paste is not uploaded by this tool.

Frequently asked questions

Is my JSON uploaded?

No. This formatter parses the text in your browser and does not send the JSON to a server.

Can I format an array as well as an object?

Yes. A valid JSON array can be formatted just like a JSON object.

Why are comments rejected?

Standard JSON does not include comments. Remove them or use a configuration format that explicitly supports comments.

What does minify do?

Minify removes indentation and extra whitespace while keeping the data structure unchanged.

Can JSON contain dates?

JSON has no native date type. Dates are normally represented as strings, often in ISO 8601 format.

What does the error position tell me?

The character offset (and nearby context) of the first syntax violation - usually a trailing comma, an unquoted key, or a single instead of double quote - so a broken payload is fixed in seconds.

Does formatting change the JSON's meaning?

Never - pretty-printing and minifying only alter whitespace between tokens, which JSON parsers ignore. Validation runs first so invalid input never gets "formatted" into something misleading.

Related tools

• YAML to JSON - Convert YAML to JSON and back online free
• JSON to CSV - Convert JSON data to CSV format online free
• JSON to TypeScript - Generate TypeScript interfaces from JSON
• JSON Path Tester - Test JSON path expressions with live results
• Base64 Encoder - Encode and decode Base64 text online free

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