JSON Formatter

Validate, format, and beautify JSON data with syntax highlighting. Perfect for developers, API testing, and data analysis with error detection and tree view.

Developer Tools 4.8 (2.8k reviews) 65k+ users
JSON Formatter

Input JSON

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Ready

Formatted JSON

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Code View

Advanced JSON Processing Features

Real-time Validation

Instant JSON validation with detailed error messages and line-by-line error highlighting to quickly identify and fix syntax issues.

Syntax Highlighting

Beautiful syntax highlighting with color-coded JSON elements including strings, numbers, booleans, and null values for better readability.

Tree View

Interactive tree view to visualize JSON structure with collapsible nodes, making it easy to navigate complex nested data structures.

Minify & Beautify

Switch between minified and beautified formats. Compress JSON for production or format it for development with customizable indentation.

Key Sorting

Automatically sort JSON keys alphabetically for consistent formatting and easier comparison between different JSON files.

File Support

Upload JSON files directly or paste from clipboard. Download formatted results as JSON files for easy sharing and storage.

How to Use

1

Input JSON Data

Paste your JSON data into the input area, upload a JSON file, or load a sample to get started. The tool accepts any valid or invalid JSON.

2

Choose Format Options

Select your preferred indentation size, enable key sorting, or choose compact mode. Customize the output to match your coding standards.

3

Format or Validate

Click Format to beautify your JSON, Minify to compress it, or Validate to check for errors. See real-time validation status and error details.

4

Copy or Download

Copy the formatted JSON to your clipboard or download it as a file. Switch to tree view for better visualization of complex structures.

Common Use Cases

API Development

Format and validate JSON responses from APIs, test request payloads, and debug API communication issues with proper formatting.

Data Analysis

Clean and format JSON data exports from databases, analyze data structures, and prepare data for further processing or visualization.

Configuration Files

Format configuration files, validate JSON schemas, and ensure proper syntax for application settings and deployment configurations.

Debugging

Identify syntax errors in JSON data, validate data structures, and troubleshoot issues in web applications and API integrations.

Data Migration

Prepare JSON data for migration between systems, validate data integrity, and ensure consistent formatting across platforms.

Learning & Teaching

Understand JSON structure with tree view, learn proper formatting conventions, and teach JSON concepts with visual representations.

Start Formatting JSON Now

Validate, beautify, and analyze your JSON data instantly with our powerful formatting tool. No registration required!