JSON Formatter
Format and validate JSON data
JSON Formatter & Validator
An easy-to-use tool to beautify, validate, and minify JSON for cleaner, structured, and error-free data formatting.
About This Tool
JSON is the most widely used data format for APIs, web development, mobile apps, and cloud platforms. This JSON Formatter helps you instantly check syntax, structure, and formatting issues – ensuring smooth integrations and faster debugging.
Key Benefits
- Beautify JSON with proper indentation for readability
- Automatically detect and highlight syntax errors
- Minify JSON for optimized file sizes in production
- Ideal for developers, QA testers, and API analysts
- Runs in the browser – no data stored or shared externally
What You Can Do With This Tool
- Debug API responses copied from browser dev tools, Postman, or backend logs.
- Clean up configuration files like settings, feature flags, or environment-style JSON.
- Prepare neatly formatted JSON for documentation, code reviews, or knowledge base articles.
- Minify JSON before embedding it into HTML, JavaScript, or production builds.
- Validate JSON quickly before sending it to APIs, storage, or third-party integrations.
How To Use (Step-by-Step)
- Copy your JSON data from your editor, API tool, or log output.
- Paste it into the "Input JSON" text area.
- Click "Format" to beautify and validate the JSON. If there is a syntax issue, an error message will be shown.
- If you want a compact version, click "Minify" to generate a single-line JSON string.
- Once you are satisfied with the result, click "Copy" to copy the formatted output for use in your code, config, or tools.
- Fix any errors highlighted, and repeat the process until your JSON is valid and correctly structured.
Privacy & Data Handling
All processing is performed directly in your browser. Your JSON is not uploaded to any remote server, API, or third-party service. This makes the tool suitable for everyday development and testing scenarios where you prefer local processing.
Still, avoid pasting highly confidential data such as passwords, private keys, or sensitive personal records unless you fully trust your local device and environment.
Disclaimer
This tool validates JSON syntax and formatting only. It does not verify the business logic, security rules, data accuracy, or API contract compliance of the JSON content. Before using any formatted or minified JSON in production systems, always review it carefully and test it within your actual application or integration environment.
We are not responsible for issues arising from incorrect JSON structures, misconfigured fields, or improper use of formatted data in live systems.
For All Developers
Boost productivity with clean JSON output.
Instant Formatting
Click once, fix errors instantly.
Secure & Privacy Friendly
Runs fully in your browser – no external APIs.