JSON Formatter & Validator Tool

Free online tool to format, validate, and fix JSON code. Beautify with proper indentation, check for syntax errors, and highlight issues. No registration required.

How to Use the JSON Formatter

1

Input Your JSON

Paste your JSON code directly or upload a .json file. The tool will automatically detect and process your input.

2

Format & Validate

Click the format button to beautify your JSON with proper indentation, or validate to check for syntax errors.

3

Review & Fix

Review the formatted output and check for any validation errors. The tool highlights issues with line numbers.

4

Download or Copy

Download the formatted JSON as a file or copy it to your clipboard with a single click.

JSON Formatter & Validator

Drag & drop your JSON file here or click to browse

Formatting Options

Syntax Highlighting
Sort Keys Alphabetically
Quote Keys
Indentation:
Original JSON 0 chars
Formatted JSON 0 chars

Processing: 0%

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Original Size
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Formatted Size
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Validation
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